Sterlco 504400-JDF Duplex 55 gpm Boiler Feed Unit 250 Gallon Steel Receiver Tank 40 PSI set new standards of performance. Reliable and efficient, each unit features heavy gauge, 3/16” steel receiver tank for long operating life. In addition, 3450 RPM motors assure maximum efficiency while maintaining minimum motor horsepower. Available in a wide range of sizes, these U.S. made pumps have just the right accessories and options to meet your unique needs. What’s more, Toboa Energy Resources is a stocking distributor for many models which means fast, easy, year-round access to pumps and replacement parts.
Standard Product Features
- Heavy Gauge Steel Receiver: Heavy gauge stainless steel construction. Sizes ranging from 12.5 gallons up to 714 gallons.
- Simplex or Duplex Motors: Heavy-duty, ball bearing, close-coupled energy efficient motors with stainless steel shaft. 3450 RPM for greater efficiency and more economical operation.
- Heavy Duty Make-up Water Valve: Mechanical, plug mounted valve with stainless steel float. Rated up to 45 PSI inlet water pressure. At pressures exceeding 45 PSI, a PRV is required on the inlet cold water line.
- Operation: Boiler feed pump(s) are controlled by a water level controller mounted on the boiler. If condensate is lost or delayed in the system, it is automatically replaced in the receiver through the make-up water valve.
- “Sterl-Seal” Pump Seal: Features the ultimate in ceramic technology for exceptionally long life. Because the seal runs on the bronze impeller hub, the motor shaft is literally outside the pump. Consequently, the shaft is not exposed to corrosion by condensate. Rated for temperatures up to 250ºF.
- Centrifugal Pump: Offers bronze fitted centrifugal pumps with a wide range of pressures and flow ranges. Unique design features provide for ease of servicing.
- Isolation valves and strainers
- Gauge Glass
- Accessories: Wide range of options and accessories
- Stainless steel receivers
- Electric alternator for duplex units
- Solenoid operated make-up water valve with reverse acting float switch.
- McDonnel-Miller #21 make-up water valve
- Special motor construction such as totally enclosed, washdown duty and explosion proof is available
- 1750 RPM motors, larger pumping capacities and higher discharge pressures – consult factory
- Custom sized tanks available
- Complete NEMA 12 Control Panel