Mepco / Dunham Bush Thermostatic Steam Traps
Warren-Webster steam traps were discontinued over 35 years ago. However, many of the original repair parts continue to be made by MEPCO under the Warren-Webster brand name.
Trane steam traps were discontinued in 1990. We have the replacement repair parts for all of the original Trane steam traps.
Today, in hundreds of thousands of installations from coast to coast, MEPCO quality traps are delivering dependable, long-lasting, low maintenance service so essential to efficient heating systems. MEPCO traps efficiently drain condensate and vent air from steam equipment and prevent the flow of steam to return piping with a simple ruggedly constructed unit that requires minimum maintenance.
Low and Medium Pressure Thermostatic Traps are designed for pressures from 25” Hg vacuum to 25 PSI and capacities to 700 EDR. With a cast brass body and cover, non-corrosive working parts, and thermostatic discs that have been tested to over 10 million cycles, these traps set industry standards for dependability. MEPCO exclusive thermostatic disc design assures uniform expansion over the entire operating range. Stop shoulder construction of the disc permits individual calibration for correct operation and field interchangeability without field adjustment. Available in six patterns (AP, SW, LH, RH, VS, VST) and three sizes (1/2”, ¾”, 1”) with either integral or renewable seats. Stainless steel valves and seats are also available.
Repair Cartridge Units allow repair of integral seat traps without removing the trap from the system piping. Consisting of a new seat, disc, valve and cap, the cartridge is installed quickly by removing the old cap and disc and screwing in the cartridge. The old trap is thus renewed with the same full flow capacity as the original in contrast to competitive repair kits and "cage units" which substantially reduce it.
High Pressure Thermostatic Traps are similar in construction to the low pressure radiator trap. With swivel type stainless steel renewable seat, this trap is especially designed for high pressure service. Stop shoulder disc construction allows ease of field replacement, if required. Operating pressures range from 5 to 125 PSI. Type TH High Pressure Thermostatic Traps are available in two patterns (AP & SW) in sizes 1/2", 3/4" and 1".
Mepco / Dunham Bush Float & Thermostatic Steam Traps
Combining the advantages of both the Float Trap and the Thermostatic Trap, MEPCO Float &Thermostatic Traps cover a wide range of pressures for numerous applications. Heavy duty construction and quality engineered valves and seats assure performance and trouble free operation. The thermostatic section of these traps incorporates the same unique valve and seat configuration found in MEPCO thermostatic traps.
Double Inlet/Double Outlet F&T Traps are applicable to all types of steam heating systems and steam process equipment where straight through piping is required. These traps can be piped in and out from either side depending on your particular needs. These traps operate efficiently with pressures up to 15 PSI for low pressure applications and up to 125 PSI for higher pressure applications. Available in five sizes (3/4", 1", 1-1/4" 1-1/2" and 2") with capacities of 275 to 24,000 pounds of condensate per hour.
High Capacity Float & Thermostatic Traps are single inlet/single outlet Float & Thermostatic traps which are applicable to all types of steam heating systems and steam process equipment where high capacity is required. Available in three sizes (1-1/2", 2" and 2-1/2") these traps operate at pressures up to 125 PSI and provide capacities up to 150,000 lbs. per hour.
Mepco / Dunham Bush Thermodynamic Steam Traps
Thermodynamic Disc Traps are designed for pressures from 4 to 600 psig, maximum temperature to 750 degrees Fahrenheit, and capacities to 2820 lbs. per hour. Typical applications are tracer lines, steam line drops, steam jacketed fittings and pumps, small press platens, dry cleaning presses and similar light to moderate condensate load service. They are not recommended for applications with varying loads, especially comfort steam heating systems. MEPCO Model MD Thermodynamic Disc Traps are compact, easy to install, self-draining and resistant to water hammer. The hardened disc is replaceable without removing the trap from the piping. Constructed entirely of stainless steel, these traps are available in four sizes -3/8", 1/2", 3/4", and 1", with or without intergral strainer.
Mepco / Dunham Bush Steam or Water Radiator Valves
The 1240 Packless Valve is applicable to both hydronic and steam heating systems from 25" Hg vacuum to 125 PSI. It can also be applied to water systems up to 125 PSI. Our highest quality valve, the 1240 has a unique design utilizing primary and secondary levers of high tensile non-corrosive alloys to insure trouble free operation. The 1240 Packless Valve opens and closes in less than one turn and is equipped with an indicating dial. Available in two patterns (AP and ST); sizes 1/2" and 3/4".
The 740A Radiator Valve is applicable to water systems as well as steam at operating pressures from 25" Hg to 150 PSI. This radiator valve has a one piece formed solid packing held in place by a heavy coil spring to assure a tight seal around the valve stem. Frequently referred to in the industry as "packless", the 740A opens and closes in less than one turn and is equipped with "On" and "Off" dial arrows and easy to use dial divisions for adjustment. Available in four patterns (AP, RH, LH, ST); sizes 1/2" through 1-1/2".
The 600A Radiator Valve is applicable for steam or water systems up to 125 PSI operating pressures. Proven in over 40 years of service, the 600A is a best buy for quality at an inexpensive price. A heavy packing nut and a one piece formed solid packing maintain a tight seal around the valve stem. The 600A opens and closes without binding, allowing for exceptionally free drainage of water. Available in two patterns (AP & ST); size 2".
Mepco / Dunham Bush Inverted Bucket Steam Traps
Inverted Bucket Traps are applicable for pressures up to 200 pounds. In-line inlet and outlet connections permit straight-through piping connections. These traps feature renewable and interchangeable valves and seats made of hardened stainless steel. The proven design provides positive opening action, and easy access to working parts without disturbing piping connections. Available in sizes 1/2" through 1-1/4" for working pressures up to 250 PSI.
Mepco / Dunham Bush Strainers
Strainers protect traps, valves, heating elements, and piping from dirt and scale. MEPCOStrainers feature a sieve formed from perforated brass, stainless steel or monel designed for easy removal for cleaning. Suitable for pressures up to 250 PSI and 125 PSI for flanged "Y" , basket strainer. These strainers are available in sizes 1/2" through 2" with threaded connections and 2-1/2" through 8" in the flanged "Y" and basket strainer models.
Mepco / Dunham Bush Vacuum Breakers
The MEPCO Vacuum Breaker is a simple device which provides a positive means of relieving or "breaking" a vacuum at a predetermined setting. It is not intended to control or maintain a specific degree of vacuum, but rather is designed to prevent such damage as:
- Freezing of coils resulting from the
hold back of condensate due to an induced vacuum.
- Collapse of jackets on steam jackets
and kettles caused by vacuum when steam is shut off.
- Water hammer in any heating equipment due to vacuum caused by throttling of control valves.
MEPCO Vacuum Breakers are furnished with 3/8" male pipe thread and are set at the factory to begin opening at 2 inches of vacuum. They may be field adjusted from 1" to 28" of vacuum. Maximum operating pressure is 65 lb.
Mepco / Dunham Bush Regulating Valves
The Mil- Balancer may be applied to all types of forced water heating and cooling systems. In one fitting it provides a positive shut-off, non-rising stem valve and a highly accurate balancing fitting. These are suitable for 200 PSIG working pressure and 250 degree temperatures. It is installed on the exit side of the coil and may be used on any type of terminal equipment - fan coil unit, convectors, cabinet unit heaters, baseboards, finvectors, or unit ventilators. Get combined functionality in one piece!
MEPCO Regulating Valve SWRF B combines the advantages of a spring-packed radiator valve with an adjustable regulating fitting. This valve is perfect for vacuum return line steam heating systems with pressures of 25" Hg vacuum to 25 PSIG. It provides a positive "on" or "off" control with accurate proportioning of steam to a convector or radiator. When balancing steam distribution in a heating system, this valve eliminates the lengthy procedure of changing regulating plates (a process that requires the valve unions to be disconnected and then reconnected).
MEPCO Regulating Valve SWRF C combines the advantages of a spring-packed radiator valve and an adjustable regulating fitting. This valve is applicable to vacuum return line steam heating systems with pressures of 25" Hg vacuum to 25 PSIG. It provides both a positive "on" or "off" control and accurate proportioning of steam to a convector or radiator. When balancing steam distribution in a heating system, this valve eliminates the lengthy procedure of changing regulating plates (a process that requires the valve unions to be disconnected and then reconnected).
 
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