Available in Steam or Hot Water Versions/15 - 800 HP, Pressures to 300 psig
Standard Features
Boiler is of the two-pass, scotch type, built and stamped in accordance with the requirements of the ASME Code, and listed by the National Board of Boilers and Pressure Vessel Inspectors.
Large combustion chamber with low heat release for complete combustion.
Smoke box is front-mounted with slip-on stack connector.
Access to fireside is accomplished with davited rear door and with split front doors. Flame observation ports are on front and rear.
Openings for cleanout inspection of waterside are provided with 3" x 4" hand holes, and with 12" x 16" manholes (80 HP up).
Insulated with 2" high-density mineral wool, lagged with 22 gauge grip jacketing, baked on epoxy enamel to resist chipping and fading.
Fire tubes are rolled and beaded on power boilers, expanded and flared on low pressure boilers (2" dia. through 30 HP, 2 1/2" dia. 40 HP and up).
Supports include lifting lugs securely welded to the top of shell; structural steel support legs on skids support the boiler so that special foundations are not required.
Standard Steam Trim
Operating & limit pressure control
Modulating pressure control (when appl.)
Water column with gauge glass, M-M 157 combination low water cut-off & pump control
Where There's Steam, There's Hurst! Solid Fuel Fired Steam, Hot Water and Biomass Boilers
Forty years of experience designing engineering and manufacturing solid fuel fired and biomass boiler systems and over 10,000 installations worldwide has made Hurst the industry's most popular solid fuel fired boiler.
Wet Fuel and Dry Fuel Configurations
Hurst's Solid Fuel Fired Boilers are specifically designed to utilize a wide range of standard and alternative fuels for Solid Fuel and Biomass Boiler solutions, for example:
Agricultural
Back-up: Gas and/or Oil
Bark
Chipped Mill Waste
Coal
Construction Debris
Hulls
Hog Fuel
Paper
Planer Shavings
Service
Hurst Boiler maintains a fully trained staff of solid fuel fired boiler service engineers as well as an extensive supply of spare parts. To respond to our customer's needs quickly, we maintain sophisticated equipment to provide the latest improvements in boiler support, equipment, manufacturing, installation, troubleshooting and operation assistance. Our dedication to quality and fast service is unsurpassed.
Other Solid Fuel Systesm & Components Available From Hurst Boiler
Deaerator (Make-Up Water Systems)
Coal Bunker Storage
Fuel Conveyors
Forced Draft Fans & Air Systems
Ash Handling Conveyors
Induced Draft Fans & Air Systems
Hurst Brand Refractories Automated Control Systems
Fuel Metering Systems
Ash Reinjection Systems
Exhaust Breeching & Stacks
Emissions Control & Monitoring
Fire Doors & Grates
Soot Blower Systems
Versatile, Rugged, Easy to Operate
Through the use of standard parts, components and configurations we can manufacture, often in a very short time, steam plant configurations tailored to a customer's specific requirements. We also welcome custom, experimental and difficult jobs.
We build quality and reliability into every system because nothing less will do. Our years of experience and commitment to our customers have developed a reliable system designed to withstand continuous operation in harsh industrial environments.
Designed, constructed and stamped in accordance with the requirements of the American Society of Mechanical Engineers. Inspected and registered with the National Board of Boiler & Pressure Vessel Inspectors.
The Firebox LPD HF design is suitable for applications to produce low pressure steam or hot water in ranges from 3,450 - 20,700 lbs/hr (3.4 mm BTU - 20 mm BTU) output at 15 PSI steam or 30 PSI hot water. This system is designed by HBC to combine the best technologies from the "old school" of biomass combustion and the latest advanced combustion control technologies. HBC's new hand fired systems are particularly suited for operations with extremely low labor cost environments. This combination enables these systems to provide a flexible and reliable operation utilizing a wide range of biomass waste with moisture contents ranging from 8 - 50% and requiring minimal fuel preparation. Ash removal is a manual operation. The boiler vessel is a two pass hybrid design incorporating a water tubed boiler-type water membrane and a two-pass fire tube scotch marine vessel. The boiler vessel is a three-pass fire tube firebox design that inherently provides an extended water membrane in the furnace area greatly reducing the amount of refractory required.
The Hybrid RG design is suitable for applications to produce high pressure steam or hot water in ranges from 3,450 - 60,000 lbs/hr (3.4 mm BTU - 60 mm BTU) output from 100 up to 400 PSI. This system is designed by HBC to combine the best technologies from the "old school" of biomass combustion and the latest advanced combustion control technologies. The new HBC reciprocating grate-type stoker system permits biomass fuels with a high proportion of incombustibles to be combusted in an efficient manner with the added advantage of automatic de-ashing. This combination is particularly suitable for heating applications in lumber dry kilns, veneer log vats, veneer dryers, greenhouses, factories, schools and office buildings. This combination enables these systems to provide a flexible and reliable operation utilizing a consistent "grade" of biomass waste with moisture contents ranging from 30 - 50%. The boiler vessel is a two pass hybrid design incorporating a water tubed boiler-type water membrane and a two-pass fire tube scotch marine vessel. This vessel's advantages over standard water tube boilers include much larger steam disengagement area providing high quality steam, larger steam storage capability for quicker response to sudden steam demand and much larger thermal storage that provides fast demand response times and safer operation.
The Hybrid CG design is suitable for applications to produce high pressure steam or hot water in ranges from 3,450 - 60,000 lbs/hr (3.4 mm BTU - 60 mm BTU) output from 100 up to 400 PSI. This system is designed by HBC to combine the best technologies from the "old school" of biomass combustion and the latest advanced combustion control technologies. The new HBC chain grate-type stoker system permits a wide range of biomass fuels with high ash contents to be combusted in an efficient manner with the added advantage of automatic de-ashing. This combination is particularly suitable for heating applications in lumber dry kilns, veneer log vats, veneer dryers, greenhouses, factories, schools and office buildings. This combination enables these systems to provide a flexible and reliable operation utilizing a consistent "grade" of biomass waste with moisture contents ranging from 30 - 50%. The boiler vessel is a two pass hybrid design incorporating a water tubed boiler-type water membrane and a two-pass fire tube scotch marine vessel. This vessel's advantages over standard water tube boilers include much larger steam disengagement area providing high quality steam, larger steam storage capability for quicker response to sudden steam demand and much larger thermal storage that provides fast demand response times and safer operation.
The Hybrid PF design is suitable for applications to produce high pressure steam or hot water in ranges from 3,450 - 60,000 lbs/hr (3.4 mm BTU - 60 mm BTU) output from 100 up to 400 PSI. This system is designed by HBC to combine the best technologies from the "old school" of biomass combustion and the latest advanced combustion control technologies. HBC's Pneumatic Feed Stoker Systems have proven their ability to provide a very low turn-down rate making it particularly suitable for heating applications in lumber dry kilns, veneer log vats, veneer dryers, greenhouses and factories. This combination enables these systems to provide a flexible and reliable operation utilizing a consistent "grade" of biomass waste with low moisture contents ranging from 8 - 20%. Ash removal is a manual operation. The boiler vessel is a two pass hybrid design incorporating a water tubed boiler-type water membrane and a two-pass fire tube scotch marine vessel. This vessel's advantages over standard water tube boilers include much larger steam disengagement area providing high quality steam, larger steam storage capability for quicker response to sudden steam demand and much larger thermal storage that provides fast demand response times and safer operation.
The Hybrid UF design is suitable for applications to produce high pressure steam or hot water in ranges from 3,450 - 60,000 lbs/hr (3.4 mm BTU - 60 mm BTU) output from 100 up to 400 PSI. This system is designed by HBC to combine the best technologies from the "old school" of biomass combustion and the latest advanced combustion control technologies. With hundreds of these systems in operation, HBC's Under Feed Stoker Systems have proven their ability to provide a very low turn-down rate making it particularly suitable for heating applications in lumber dry kilns, veneer log vats, veneer dryers, greenhouses and factories. This combination enables these systems to provide a flexible and reliable operation utilizing a consistent "grade" of biomass waste with moisture contents ranging from 8 - 50%. Ash removal is a manual operation. The boiler vessel is a two pass hybrid design incorporating a water tubed boiler-type water membrane and a two-pass fire tube scotch marine vessel. This vessel's advantages over standard water tube boilers include much larger steam disengagement area providing high quality steam, larger steam storage capability for quicker response to sudden steam demand and much larger thermal storage that provides fast demand response times and safer operation.
Hurst Boiler and Welding Co., Inc. provides its clients with the support and expertise necessary to design, fabricate and install complete coal fired boiler systems from the fuel storage system thru exhaust gas emission mitigation. This particular representation exhibits the application of HBC's Hybrid WW CG SH boiler system into a complete turnkey system. It should be understood that every application is different in some way: from coal quality and/or type, steam/heat requirements to site specific local and/or national emission regulations. Please contact our knowledgeable staff to discuss your particular application.
EXPAND Hybrid Coal Fired Plant Super Heat Chaingrate
Hurst Boiler and Welding Co., Inc. provides its clients with the support and expertise necessary to design, fabricate and install complete coal fired boiler systems from the fuel storage system thru exhaust gas emission mitigation. This particular representation exhibits the application of HBC's Hybrid WW CG boiler system into a complete turnkey system. It should be understood that every application is different in some way: from coal quality and/or type, steam/heat requirements to site specific local and/or national emission regulations. Please contact our knowledgeable staff to discuss your particular application.
The Hybrid WW CG SH design is suitable for applications to produce high pressure steam or hot water in ranges from 3,450 - 60,000 lbs/hr (3.4 mmBTU - 60 mmBTU) output from 100 up to 400 PSI. This system is designed by HBC to combine the best technologies from the "old school" of coal combustion and the latest advanced combustion control technologies. The new HBC chain grate-type stoker system permits either bituminous coal washed singles or smalls to be combusted in an efficient manner with the added advantage of automatic de-ashing. This combination is particularly suitable for industrial heating and process steam applications. The boiler vessel is a two pass hybrid design incorporating a water tubed boiler-type water membrane and a two-pass fire tube scotch marine vessel. This vessel's advantages over standard water tube boilers include much larger steam disengagement area providing high quality steam, larger steam storage capability for quicker response to sudden steam demand and much larger thermal storage that provides fast demand response times and safer operation. This system also incorporates extended water wall membranes that extend down the gasification/combustion chambers side walls thereby greatly reducing refractory requirements which is essential when utilizing highly volatile solid fuels. The addition of a steam superheater allows this system to provide hotter steam (an additional +100º F) that can increase electrical cogeneration output over standard steam applications and specialized plant process applications.
The Hybrid WW CG design is suitable for applications to produce high pressure steam or hot water in ranges from 3,450 - 60,000 lbs/hr (3.4 mm BTU - 60 mm BTU) output from 100 up to 400 PSI. This system is designed by HBC to combine the best technologies from the "old school" of coal combustion and the latest advanced combustion control technologies. The new HBC chain grate-type stoker system permits either bituminous coal washed singles or smalls to be combusted in an efficient manner with the added advantage of automatic de-ashing. This combination is particularly suitable for industrial heating and process steam applications. The boiler vessel is a two pass hybrid design incorporating a water tubed boiler-type water membrane and a two-pass fire tube scotch marine vessel. This vessel's advantages over standard water tube boilers include much larger steam disengagement area providing high quality steam, larger steam storage capability for quicker response to sudden steam demand and much larger thermal storage that provides fast demand response times and safer operation. This system also incorporates extended water wall membranes that extend down the gasification/combustion chambers side walls thereby greatly reducing refractory requirements which is essential when utilizing highly volatile solid fuels.
The Firebox LPD CG design is suitable for applications to produce low pressure steam or hot water in ranges from 3,450 - 20,700 lbs/hr (3.4 mm BTU - 20 mm BTU) output at 15 PSI steam or 30 PSI hot water. This system is designed by HBC to combine the best technologies from the "old school" of coal combustion and the latest advanced combustion control technologies. The new HBC chain grate-type stoker system permits either bituminous coal washed singles or smalls to be combusted in an efficient manner with the added advantage of automatic de-ashing. This combination is particularly suitable for residential and industrial heating and process steam applications. The boiler vessel is a three-pass fire tube firebox design that inherently provides an extended water membrane in the furnace area greatly reducing the amount of refractory required.
The Coalmiser HPD CG design is suitable for applications to produce high pressure steam or hot water in ranges from 5,000 - 40,000 lbs/hr (4.8 mm BTU - 39 mm BTU) output from 150 up to 250 PSI. This system is designed by HBC to combine the best technologies from the “old school” of coal combustion and the latest advanced combustion control technologies. The new HBC chain grate-type stoker system permits either bituminous coal washed singles or smalls to be combusted in an efficient manner with the added advantage of automatic de-ashing. This combination is particularly suitable for industrial heating and process steam applications. The boiler vessel is a three-pass fire tube design incorporating a wet back turnaround that eliminates the need for rear door refractory.
The Coalmiser HPD UF design is suitable for applications to produce high pressure steam or hot water in ranges from 2,000 - 8,000 lbs/hr (2 mm BTU - 7.7 mm BTU) output from 150 up to 250 PSI. This system is designed by HBC to combine the best technologies from the "old school" of coal combustion and the latest advanced combustion control technologies. The stationary underfeed stoker system provides a very low turn-down rate making it particularly suitable for heating applications in greenhouses, factories, schools and office buildings. This combination enables these systems to provide the most reliable operation utilizing a consistent single "grade" of low sulfur bituminous coal. Ash removal is available in manual and automatic configurations. The boiler vessel is a three-pass fire tube design incorporating a wet back turnaround that eliminates the need for rear door refractory.
The Coalmiser HPD design is suitable for applications to produce high pressure steam or hot water in ranges from 5,000 - 40,000 lbs/hr (4.8 mm BTU - 39 mm BTU) output from 150 up to 250 PSI. This system is designed by HBC to combine the best technologies from the "old school" of coal combustion and the latest advanced combustion control technologies. The new HBC chain grate-type stoker system permits either bituminous coal washed singles or smalls to be combusted in an efficient manner with the added advantage of automatic de-ashing. This combination is particularly suitable for industrial heating and process steam applications. The boiler vessel is a three-pass fire tube design incorporating a wet back turnaround that eliminates the need for rear door refractory.
The HBC Blowdown Separator is designed to take water from the boiler during blowdown and reduce it to atmospheric pressure for disposal. The HBC Separator accomplishes this by separating the subsequent flashed steam from the hot water. As the blowdown enters the vessel, it is forced into a centrifugal pattern by means of a striking plate. The steam is vented to the atmosphere through a top connection. The HBC Separator is built as per requirements Section VIII of the ASME Code and stamped by the National Board of Pressure Vessel Inspectors. The HBC Blowdown Separator provides an economical means of safe boiler blowdown.
The separator includes a structural steel support stand for mounting to foundation. Options available are after cooler, manual cooling valve assembly, automatic cooling valve assembly, and exhaust heads.
HURST BLOWDOWN SEPARATORS are built to Section VIII, Division 1 of the ASME Code for 250 PSI design pressure. (200 PSI design pressure with 150# ANSI flanges) Blowdown separator design pressure should be a minimum of 25% of the boiler maximum allowable working pressure (MAWP) as recommended by the National Board.
Available in 8 Models from 100 to 400 BHP. Steam 15 - 150 psi. Hot Water 30psi
Natural Gas
Oil
Combination
Steam
Hot Water
Standard Features
Durability
Built in accordance with the ASME Code, the wet back design has proven to give much longer useful life cycles than dry back boilers.
Quality
Each unit is tested and inspected and registered with the National Board of Boiler and Pressure Vessel Inspectors.
Design
Hurst Boiler utilizes state of the art computer design techniques in every boiler. This accounts for accurate calculations of construction materials and optimum utilization of the boiler’s performance criteria.
Efficiency
The Euro Series is designed for optimum fuel efficiency and has proven in certified tests to meet, and often exceed, the efficiencies of four-pass boilers.
Low Maintenance
There are no refractory baffles to replace or maintain. Elimination of these will result in thousands of dollars in savings.
Tube Sheets
The wet back has independent tube sheets with uniform temperatures. Three and four pass dry back boilers have tube sheets with large temperature variations and this results in premature tube failure and cracks in the tube sheets.
Easy Access
Since there is no large refractory rear door, one man can easily remove the rear cover plates for access to the tubes. Front doors can be opened without removing burner components or controls.
Compact
With computer aided design, Hurst has made the wet back a space saving workhorse without sacrificing the principle of 5 sq. ft. of heating surface per BHP.
Combustion
Hurst uses name brand burner components with proven reliability. Every unit is boiler/burner compatible and tested at the factory prior to shipment.
Standard Steam Trim
Operating & limit pressure control
Modulating pressure control (when appl.)
Water column with gauge glass probe typecombination low water cut-off & pump control (not shown
Probe type auxiliary low water cut-off with manual reset
Water column drain valve
Safety relief valve(s) per ASME Code
Steam Gauge
Stack Thermometer
Standard Water Trim
Operating & limit temperature control
Modulating temperature control (when appl.)
Low water cut-off control with manual reset
Combination pressure, temperature gauge
Hot water return baffle for shock resistance
Safety relief valve(s) per ASME Code
Stack thermometer
Euro Series is a full wet-back radiant heat transfer area that promotes superior internal water circulation and rapid heat absorption. Separate reare tubesheets allow each pass pass of tubes to expand and contract at its own rate without tube-to-sheet stress. Tubes are mechanically rolled, flared and beaded, making any tube service a simple matter. The only refractory in this design is a rear plug which allows access to the furnace for inspection.
Three Pass Firetube Hot Water Boiler With Through the Door Design!
Capacities
Hot Water Applications
Specifiable using the attributes of the LPE design.
Remains classified as a modified scotch, firetube type boiler.
Efficiencies tested at >83% on natural gas.
Smaller foot print, can be installed in tighter
places.
Semi wet-back construction.
Standard Equipment Boiler Three pass design for 30 psi hot water (available for 60 psi water). Factory assembled with trim and, tested in accordance with ASME code, UL, and CSD-1 codes. Steel turbulators inserted in third pass for maximum heat-transfer control.
Standard Boiler Trim Kunkle safety relief valve, operating temperature control, high limit temperature control with manual reset, 3 1/2” combination pressure & temperature gauge, M&M 750 low water cut-off control with manual reset.
Burner UL listed with pre-piped, wired and factory tested forced draft power burners for:
Natural Gas
Propane (LP) Gas
No. 2 (Diesel) Oil
Combination Gas/Oil
Hurst "Performance" Boiler
Factory Assembled, Prewired and Tested
No Field Assembly Required.
UL Listed Boiler/Burner Packages.
Fully Assembled, Pre-piped, Prewired, Pressure Tested Gas Trains
Complies with ASME, UL, CSD-1 and ASHRAE Standards
High Efficiency, Low Stack Temperatures.
Customer Service Support Through National Network of Sales, Service, St Training and Parts by Factory Representatives.
LPW Boiler Features
Modified Scotch designed to fit through a standard 36” x 80” door opening Up to 125 HP (4,184 mbh output).
The Hurst LPW “Performance” boiler is America’s most heavily designed and built boiler in its class. Consider the features and specify the Hurst LPW Series.
A welded steel firetube boiler, the LPW has extra-heavy 13-gauge tubes for extended life. All tubes are attached to the tube sheets by rolling and flaring. There are no welded tubes in the LPW.
Thickest materials used in the industry.
Boiler shell is 5/16” thick boiler plate 30-40 HP / 3/8" 50-125 HP.
Twin boiler tube sheets are 1/2” thick boiler plate.
Insulation is 2” ceramic wool and is lagged with 22-gauge boiler jacket.
Extra heavy 4” channel iron boiler skids.
Designed to last with special industrial grade features.
Couplings are 3,000 psi.
Flanged, detachable front and rear smoke boxes.
Brass nuts on front access panels, brass plugs in factory pre-piped crosses and tees on trim.
Available from 10 to 80 HP, 30-125 BHP,15-300 steam, 30-160 hot water.
Totally new design Industrial grade construction, 2-Pass fi re tube design with enhanced heat transfer features. The VIX Series can offer higher effi ciencies than standard vertical boilers. It’s 100% water backed and built to deliver years of reliable service.
No burned-out side walls primary fl ue gases pass via water backed heat transfer tubes. No refractory backed fi nned passages to burn out.
Smaller foot print… more than 50% of standard vertical boilers.
Extended heating surface The VIX Series optimizes heat transfer with technology advanced fi re tubes. These ultra-effi cient tubes capture and transfer heat well beyond the curve of standard fi re tubes, eliminating the need for turbulator inserts required for achieving optimal effi ciencies.
Easy access to burner and eye-high control panel. All valves and controls located within reach.
Removable turn-around box Simply loosen the lug nuts and lower the turn-around section for easy inspection.
Innovative vessel design Constant calm water levels with water-to-steam stabilization features.
Large steam chamber with internal water separator insures “dry” highest quality steam.
Boiler and Burner Technology Engineering for a Cleaner Environment.
Available for any liquid or gaseous fuel. Sizes from 100 to 2500 horsepower with pressures to 450 PSI.
Hurst Boiler and LOW NOx have become synonymous names within the boiler industry.
Hurst Boiler & Welding Company developed its first low emission boiler in 1992, and has been incorporating new technologies to improve upon this ever since.
Hurst Boilers are designed and engineered with larger furnaces. These larger furnaces enable us to provide for inherently lower NOx emissions. In addition, Hurst has historically been at the forefront of utilizing burners specifically designed for low emission projects.
Currently, new technologies such as gas and air pre-mix, flue gas recirculation, and thermal reduction are being employed.
New control systems offer superior combustion, utilizing microprocessor-based fuel/air ratio controls.
Research and development projects are maintained in-house, as we continually strive to provide boiler solutions to meet all federal and state requirements, while greatly reducing "greenhouse" gasses.
The Hurst Cyclone "Phase II" vertical tubeless boilers are available for steam and hot water applications.
In addition, Hurst’s state-of-the-art combustion technologies are engineered to meet the stringent requirements for California, including SCAQMD, utilizing natural gas for fuel. Environmentally friendly, these boilers are fully factory-assembled, piped, wired and tested.
Simple installation enables operator convenience, and provides for low operating cost.
Whether for new or existing boilers, you can count on Hurst Boiler to be the leader in engineering environmentally friendly products.
This model features an external furnace, which opens a whole new range for packaged boilers. Inherently low heat release enhances firing performance to reach outputs and emissions requirements not possible with other shell type boilers.
We can integrate auxiliary fuel backup burners or retrofit stand-alone combustion systems into existing boilers.
The HURST “OXY-MISER” deaerating boiler feedwater system eliminates the need of expensive oxygen scavenger chemicals and also offers the following advantages:
Removes carbon dioxide as well as oxygen.
Raises the boiler feedwater temperature, eliminating thermal shock in boilers.
Improves overall boiler room efficiency.
Feedwater pumps are sized for each individual application – assuring total compatibility and optimum operation.
Vessels are ASME Code constructed for 50 psig.
Compact design means smaller boiler room requirements.
Why Deaerate?
The use of deaerators has long been used in power plants and water tube type boilers, primarily because they remove undissolved oxygen and raise the temperature of the feedwater. These advantages are important today for firetube boilers as well, due to higher capital investments. Operating costs can be reduced by recovering flash steam when returned by high temperature condensate. This feature also raises the feedwater temperature, thus requiring less boiler fuel to convert the feedwater to useable steam. Boiler tubes, condensate lines, and process piping have a much longer useful life by eliminating the pitting action of untreated water. This advantage alone justifies the cost of an “OXY-MISER” deaerator.
How Does It Work?
Undeaerated fresh water is fed into the deaerator through the inlet water connection. This water passes through the steam-filled heating and venting section. The water temperature is raised and many of the undissolved gases are released. As the water passes through the assembly, it flows to a scrubber section where final deaeration is accomplished by scrubbing the water with oxygen free steam. This steam is induced through a stainless steel spray valve assembly which causes the high velocity steam to break the water down to a fine mist through a violent scrubbing action. The deaerated water spills over to the tanks storage compartment for use by the boiler, and the gases are vented to the atmosphere.
Standard Equipment
Welded steel tank, designed and constructed for 50 psig as per the requirements of ASME Code; deaerating section with spray valve.
Structural steel stand with square tubing and steel pump platform.
Feedwater pump and motor sets, sized for each application.
Water inlet valve assembly for condensate return and fresh water.
Overflow trap, tank thermometer, pressure gauge.
Steam pressure reducing valve assembly with temperature controller.
Safety relief valve(s), vent valves, tank drain valve.
Water gauge glass set with cocks, drain valve, and protection rods.
Pump suction piping with strainer and shut-off valve.
Sizes 30 to 1,000 gallons (Larger Sizes on Request) For all types of steam boilers with pressures to 300 psig.
The Hurst Feedmiser Automatic Return System provides storage for water make-up and return condensate from the system loop. The system consists of an elevated tank mounted boilers.
When equipped with optional trim, the Feedmiser provides a quality, heavy duty packaged unit fully assembled and ready to install. These units are factory assembled with pre-wired control panel, and fully piped pumps along with all the neccessary fittings and valves. Consider the optional automatic steam preheater. When incorporated into the system, feedwater temperature can be maintained at 210°F. At this high temperature, oxygen and carbon dioxide are released, reducing corrosion problems in the boiler and piping system. Systems are available in single, dual, triple and quad pump configurations and custom orders are welcome.
The following trim shall be factory installed on each system:
Automatic, internal float actuated fresh water make-up valve assembly.
Water gauge glass set with bronze shut-off cocks and drain.
Tank drain valve, brass gate.
Bi-metallic water thermometer.
Pump suction piping with shut-off valve and strainer.
Typical Optional Equipment:
Control panel with motor starters & breakers.
Pump function lights, selector switches.
Diffuser tube for extra high temperature condensate return.
Capacities From 8.5 to 813 HP 285 to 27,215 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Efficient 3-Pass Design
Flexibility – Gas, Oil, Heavy Oil, and Combination Gas/Oil
ASME Code Constructed & Stamped for 15 PSI Steam/30 Water
Registered with the National Board of Boiler Inspectors
Competitively Priced, Easily Maintained, Designed for Efficiency
Large Furnace Volume for Ultimate Combustion Efficiency
Unified Refractory Base Floor
Steel Skids and Lifting Eyes
Low Heat Release - 5 Sq. Ft./HP.
Factory Insulated – 2” Mineral Wool
Factory Jacketed & Painted
Easy Access to Fireside Surfaces
Ample Waterside Cleanout Openings
Fully Automatic Operation
U.L. Listed, Forced Draft Burners
Wet Back Construction
U.L. Listed Controls & Trim
Factory Test Fired
Flame Observation Ports Front & Rear
Standard Features
All units are factory packaged with operating controls, relief valves, burner and fuel train. Installation is made simple in that only service connections are needed to place in operation. Flexible burner systems are available for firing natural gas, LP gas, #2 oil, heavy oil, or combinations. High density 2” mineral wool insulation assures lower radiant heat loss. In addition to meeting the requirements of U.L., burner systems are optionally available to meet the requirements of FM, IRI, MILITARY and others.
Steam Trim
Steam pressure gauge with syphon and test-cock; combination low water cut-off and pump control (or feeder); auxiliary low water cut-off with manual reset; water column gauge glass set and drain valve; ASME safety relief valve(s); operating and high limit pressure control.
Water Trim
Combination pressure and temperature gauge; low water cut-off control with manual reset; ASME relief valve(s); operating and high limit temperature controls.
Capacities From 8.5 to 813 HP 285 to 27,215 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Efficient 3-Pass Design
Flexibility - Gas, Oil, Heavy Oil, and Combination Gas/Oil
ASME Code Constructed & Stamped for 15 PSI Steam/30 Water
Registered with the National Board of Boiler Inspectors
Competitively Priced, Easily Maintained, Designed for Efficiency
Large Furnace Volume for Ultimate Combustion Efficiency
Unified Refractory Base Floor
Steel Skids and Lifting Eyes
Low Heat Release
Factory Insulated - 2” Mineral Wool
22QA Zinc Coated
Baked on Powder Coat Finish
Easy Access to Fireside Surfaces
Ample Waterside Cleanout Openings
Fully Automatic Operation
U.L. Listed, Forced Draft Burners
Wet Back Construction
U.L. Listed Controls & Trim
Factory Test Fired
Flame Observation Ports Front & Rear
Standard Features
All units are factory packaged with operating controls, relief valves, burner and fuel train. Installation is made simple in that only service connections are needed to place in operation. Flexible burner systems are available for firing natural gas, LP gas, No.2 oil, heavy oil, or combinations. High density 2" mineral wool insulation assures lower radiant heat loss. In addition to meeting the requirements of UL, burner systems are optionally available to meet the requirements of FM, IRI, MILITARY and others.
Steam Trim
Steam pressure gauge with syphon and testcock; combination low water cut-off and pump control (or feeder); auxiliary low water cut-off with manual reset; water column gauge glass set with tricocks and drain valve; ASME safety relief valve(s); operating and high limit pressure control.
Water Trim
Combination pressure and temperature gauge; low water cut-off control with manual reset; ASME relief valve(s); operating and high limit temperature controls.
The waterside openings are located in the most effective positions. The lower handholes offer far better access for both cleanout and inspection.
These more functional locations avoid the obstructing handhole “tunnels” used by our competitors.
The top opening offers a strategic view of the furnace crown sheet.
More Steam Storage
Capacity to handle swing and spike loads – quick recovery - quick response.
The larger steam-release surface is calmer, reducing carry over of unevaporated water.
The resulting drier steam also reduces system scaling.
In addition, dry steam helps to eliminate unnecessary extra condensate. Energy and fuel are saved. Longer life results.
Four-Pass Design
The gases leaving the furnace are split four ways and travel through four individual serpentine fin passages to the stack outlet.
Each quarter of the heat travels its own four-pass path (see illustration below).
Heat transfers evenly to the fins and boiler shell, eliminating the metal stress due to uneven heat transfer common in other designs.
This illustration shows the progression of four gas paths around the circumference of the boiler shell.
Primary-pass in furnace pipe.
Second-pass follows path through fins along outside of shell.
Third-pass follows path through fins along outside of shell.
Fourth-pass follows path through fins along outside of shell, then merges together to exit exhaust stack.
Options and Alternatives
We specialize in customizing your boiler. The Cyclone can be equipped to suit a wide variety of installations and specifications. We will help direct you to the most cost-effective models and features.
Simple Installation
Unit is skid mounted for easy handling.
Factory wired with wiring schematic included in the manual.Efficient and space saving layout.
Available Accessories
The Cyclone is available in a complete package with an optional compact boiler-mounted feedwater system for a finished wired and piped, ready-to-fire unit.
Blowdown separators are also available.
Turbulent Flame
Heat is forced down, with the fire whirling and spinning against its natural flow. This pattern enhances recirculation, mixing and heat transfer, driving more energy into the water for greater fuel-to-steam efficiency.
Reliability
The furnace crown is water cooled, eliminating troublesome refractory breakdown inherent inunits of inferior design.
No fire tubes, water coils or “in the fire” mud rings to burn out.
"Eye High" Burner
No step ladder is needed to service.
No bending over or sitting on the floor.
The air intake is located in the center of the unit so dust is not pulled from the floor.
Durability
Fire does not pass under the bottom mud ring, eliminating the blistering that occurs with other designs.
Cooler furnace gases are located at the bottom of the vessel where scale is most likely to occur. Baking of scale is alleviated.
Easier Service
Fireside fin access in top and bottom.
Access opening above feedwater inlet for easy cleaning.
Thoughtfully engineered with the owner in mind.
No heavy doors or covers to complicate service procedures.
Safety
Electrical components are located away from the floor, helping eliminate the possibility of water coming in contact with electricity.
Boiler built to ASME Section 1, High Pressure Boiler Code.CSD-1 approved.
Capacities from 100 to 225hp. 347 to 6695 MBTU/HR.
UL Approved Forced Draft Burners
Efficient 3-Pass Wet Back Design
Hinged Doors on Front & Rear Smoke Boxes for Easy Service
ASME Code Constructed & Stamped For Pressures to 300 PSI
Registered With The National Board of Boiler Inspectors
Low Furnace Heat Release
Large Furnace Volume For Ultimate Combustion Efficiency
Steel Skids and Lifting Eyes
U.L. Listed Controls & Trim
Competitively Priced, Easily Maintained, esigned For Efficiency
Flame Observation Ports - Front & Rear
Factory Insulated
Factory Jacketed & Painted
Easy Access to Fireside Surfaces
Ample Water Side Cleanout Openings
Fully Automatic Operation
U.L. Listed, Forced Draft Burners
Fuel Flexibility – Gas, Oil and Combination as/Oil
Standard Features - Ohio Special Series
All units are factory packaged with operating controls, relief valves, burner and fuel train. Installation is made simple in that only service connections are needed to place in operation. Flexible burner systems are available for firing natural gas, LP gas, #2-6 oil or combinations. High density mineral wool insulation assures lower radiant heat loss. In addition to meeting the requirements of UL, burner systems are optionally available to meet the requirements of FM, IRI, CSD-1 and others.
Steam Trim
Steam pressure gauge with syphon and testcock; probe type combination low water cutoff and pump control (or feeder); water column gauge glass set and drain valve; probe type Aux. L.W.C.O.; ASME safety relief valve(s); operating, high limit and modulating pressure controls.
Capacities From 30 to 2,000 HP 670 to 3,348 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Factory Assembled, Prewired and Tested
No Field Assembly Required
UL Listed Boiler/Burner Packages
Fully Assembled, Prepiped, Prewired, Pressure Tested Gas Trains
Complies With ASME, UL, CSD-1 and ASHRAE Standards
High Efficiency, Low Stack Temperatures
Customer Service Support Through National Network of Sales, Service, Start-up, Training and Parts By Factory Representatives
Standard Features
Durability
Built in accordance with the ASME Code, the wet back design has proven to give much longer useful life cycles than dry back boilers.
Quality
Each unit is tested and inspected and registered with the National Board of Boiler and Pressure Vessel Inspectors.
Design
Hurst Boiler utilizes state of the art computer design techniques in every boiler. This accounts for accurate calculations of construction materials and optimum utilization of the boiler’s performance criteria.
Efficiency
The Series 400 is designed for optimum fuel efficiency and has proven in certified tests to meet, and often exceed, the efficiencies of four-pass boilers.
Low Maintenance
There are no refractory baffles to replace or maintain. Elimination of these will result in thousands of dollars in savings.
Tube Sheets
The wet back has independent tube sheets with uniform temperatures. Three and four pass dry back boilers have tube sheets with large temperature variations and this results in premature tube failure and cracks in the tube sheets.
Easy Access
Since there is no large refractory rear door, one man can easily remove the rear cover plates for access to the tubes. Front doors can be opened without removing burner components or controls.
Compact
With computer aided design, Hurst has made the wet back a space saving workhorse without sacrificing the principle of 5 sq. ft. of heating surface per BHP.
Combustion
Hurst uses name brand burner components with proven reliability. Every unit is boiler/burner compatible and tested at the factory prior to shipment.
Standard Steam Trim
Operating &limit pressure control
Modulating pressure control (when appl.)
Water column with gauge glass probe typecombination low water cut-off & pump control (not shown
Probe type auxiliary low water cut-off with manual reset
Capacities From 15 to 2,000 HP 670 to 3,348 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Factory Assembled, Prewired and Tested
No Field Assembly Required
UL Listed Boiler/Burner Packages
Fully Assembled, Prepiped, Prewired, Pressure Tested Gas Trains
Complies With ASME, UL, CSD-1 and ASHRAE Standards
High Efficiency, Low Stack Temperatures
Customer Service Support Through National Network of Sales, Service, Start-up, Training and Parts By Factory Representatives
Standard Features
Durability
Built in accordance with the ASME Code, the wet back design has proven to give much longer useful life cycles than dry back boilers.
Quality
Each unit is tested and inspected and registered with the National Board of Boiler and Pressure Vessel Inspectors.
Design
Hurst Boiler utilizes state of the art computer design techniques in every boiler. This accounts for accurate calculations of construction materials and optimum utilization of the boiler’s performance criteria.
Efficiency
The Series 400 is designed for optimum fuel efficiency and has proven in certified tests to meet, and often exceed, the efficiencies of four-pass boilers.
Low Maintenance
There are no refractory baffles to replace or maintain. Elimination of these will result in thousands of dollars in savings.
Tube Sheets
The wet back has independent tube sheets with uniform temperatures. Three and four pass dry back boilers have tube sheets with large temperature variations and this results in premature tube failure and cracks in the tube sheets.
Easy Access
Since there is no large refractory rear door, one man can easily remove the rear cover plates for access to the tubes. Front doors can be opened without removing burner components or controls.
Compact
With computer aided design, Hurst has made the wet back a space saving workhorse without sacrificing the principle of 5 sq. ft. of heating surface per BHP.
Combustion
Hurst uses name brand burner components with proven reliability. Every unit is boiler/burner compatible and tested at the factory prior to shipment.
Standard Steam Trim
Operating &limit pressure control
Modulating pressure control (when appl.)
Water column with gauge glass probe typecombination low water cut-off & pump control (not shown
Probe type auxiliary low water cut-off with manual reset
Modified Three-Pass Scotch Marine Fire Tube Boiler
Capacities From 20 to 100 HP 670 to 3,348 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Factory Assembled, Prewired and Tested
No Field Assembly Required
UL Listed Boiler/Burner Packages
Fully Assembled, Prepiped, Prewired, Pressure Tested Gas Trains
Complies With ASME, UL, CSD-1 and ASHRAE Standards
High Efficiency, Low Stack Temperatures
Customer Service Support Through National Network of Sales, Service, Start-up, Training and Parts By Factory Representatives
Modified Scotch designed to fit through a standard 36" x 80" door opening... up to 100HP (3,348 mbh output).
LPE Boiler Features
The Hurst LPE "Performance" boiler is America's most heavily designed and built boiler in its class. Consider the features and specify the Hurst LPE.
1. A welded steel firetube boiler, the LPE has extra heavy 12 gauge tubes for extended life. All tubes are attached to the tube sheets by rolling and flaring. There are no welded tubes in the LPE.
2. Thickest materials used in the industry...
Boiler shell is 5/16" thick boiler plate.
Twin boiler tube sheets are 1/2" thick boiler plate.
Insulation is 2" mineral wool and is lagged with 22 gauge boiler jacket.
Extra heavy 3" channel iron boiler skids.
3. Designed to last with special industrial grade features...
Couplings are 3,000 psi.
Flanged, detachable front and rear smoke boxes.
Brass nuts on front access panels, brass plugs in factory prepiped crosses and tees on trim.
Standard Features
Boiler
Three pass design for 15 psi steam or 30 psi water (optionally available for 60 psi water). Factory assembled with trim, tested, ASME code, UL, and CSD-1 standards.
Steam Trim
Kunkle safety relief valve, operating pressure control, high limit pressure control with manual reset, 4 1/2" steam pressure gauge with syphon and test cock, combination pump control and low water cut off with gauge glass assembly and drain valve, auxiliary low water cut-off with manual reset.
Water Boiler Trim
Kunkle safety relief valve, operating temperature control, high limit temperature control with manual reset, 3 1/2" combination pressure & temperature gauge, low water cut-off control with manual reset.
Burner
UL listed with prepiped, wired and factory tested forced draft power burners for natural gas, propane (LP) gas, No. 2 (diesel) oil, or combination gas/oil.
Available in Steam or Hot Water Versions 15 - 800 Bhp Pressures to 300 psig
Three-pass design.
81% minimum efficiency.
Davited rear doors.
Low maintenance.
5 sq. ft. heating surface/HP.
Durable design.
Heavily constructed.
Standard Features
Boiler is of three pass dry back, scotch type, built and stamped in accordance with the requirements of the ASME Code, and listed by the National Board of Boilers and Pressure Vessel Inspectors.
Large combustion chamber with low heat release for complete combustion.
Rear smoke box includes slip-on stack connector and features hinged and davited rear door (all sizes) with 16” dia. access door with 2” observation port (80 Hp & larger).
Front doors are hinged, bolted and insulated (80 Hp & larger) to provide ready access to all firetubes.
Large 12” x 16” manholes are standard on larger units (40 Hp & up). Cleanout hand holes 3” x 4” are furnished in the bottom of the boiler shell.
Insulated with 2” high-density fiberglass, the shell is covered with 22 gauge grip jacketing and spray baked on powder coat finish.
2 1/2” dia. steel firetubes (2” dia. through 30 Hp) are rolled and beaded on power boilers, expanded and flared on low pressure boilers.
Twin lifting lugs are securely welded to the top of the shell. Heavy steel support legs on skids provide support for the boiler & burner.
Standard Steam Trim
Operating & high limit pressure control
Modulating pressure control on modulating burners
Water column with gauge glass, trycocks. Combination low water cut-off and pump controller
Probe Aux, L.W.C.O.
Steam pressure gauge with syphon and test cock.
Stack Thermometer
Water column drain valve
Safety relief valve(s) per ASME code
Standard Water Trim
Operating & high limit temperature control
Modulating control on boilers with modulating burners
Probe type low water cut-off control
Combination pressure, altitude, temperature gauge
Stack thermometer
Hot water return baffle for thermal shock resistance
Available in Steam or Hot Water Versions | 15 - 800 HP Pressures to 300 psig
Two-pass design eliminates refractory baffles between flue gas passes.
Minimum maintenance with rugged construction for extra-long life.
Standard Features
Boiler is of the two-pass, scotch type, built and stamped in accordance with the requirements of the ASME Code, and listed by the National Board of Boilers and Pressure Vessel Inspectors.
Large combustion chamber with low heat release for complete combustion.
Smoke box is front-mounted with slip-on stack connector.
Access to fireside is accomplished with hinged and davited rear door (40 HP & larger) and with split front doors. Flame observation ports are on front and rear.
Openings for cleanout inspection of waterside are provided with 3” x 4” hand holes, and with 12” x 16” manholes (80 HP up).
Insulated with 2” high-density mineralwool, lagged with 22 gauge grip jacketing, baked on epoxy enamel to resist chipping and fading.
Firetubes are rolled and beaded on power boilers, expanded and flared on low pressure boilers (2” dia. through 30 HP, 2 1/2” dia. 40 HP and up).
Supports include lifting lugs securely welded to the top of shell; structural steel support legs on skids support the boiler so that special foundations are not required.
Standard Steam Trim
Operating & limit pressure control
Modulating pressure control (when appl.)
Water column with gauge glass, M-M 157 combination low water cut-off & pump control
Available in Steam or Hot Water Versions/15 - 800 HP, Pressures to 300 psig
The HBC Blowdown Separator is designed to take water from the boiler during blowdown and reduce it to atmospheric pressure for disposal. The HBC Separator accomplishes this by separating the subsequent flashed steam from the hot water. As the blowdown enters the vessel, it is forced into a centrifugal pattern by means of a striking plate. The steam is vented to the atmosphere through a top connection. The HBC Separator is built as per requirements Section VIII of the ASME Code and stamped by the National Board of Pressure Vessel Inspectors. The HBC Blowdown Separator provides an economical means of safe boiler blowdown.
Available in 8 Models from 100 to 400 BHP. Steam 15 - 150 psi. Hot Water 30psi
Capacities 
Available from 10 to 80 HP, 30-125 BHP,15-300 steam, 30-160 hot water.
The HURST “OXY-MISER” deaerating boiler feedwater system eliminates the need of expensive oxygen scavenger chemicals and also offers the following advantages:
Sizes 30 to 1,000 gallons (Larger Sizes on Request) For all types of steam boilers with pressures to 300 psig.
Capacities From 8.5 to 813 HP 285 to 27,215 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Capacities From 8.5 to 813 HP 285 to 27,215 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Other features include:
Inspection Access
Capacities from 100 to 225hp. 347 to 6695 MBTU/HR.
Capacities From 30 to 2,000 HP 670 to 3,348 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Capacities From 15 to 2,000 HP 670 to 3,348 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Capacities From 20 to 100 HP 670 to 3,348 MBTU/HR. 15 PSI Steam 30 PSI Water (60 PSI Water Optional)
Available in Steam or Hot Water Versions 15 - 800 Bhp Pressures to 300 psig
Available in Steam or Hot Water Versions | 15 - 800 HP Pressures to 300 psig
