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Sterlco 42530-JD Duplex 45 GPM Condensate Return Pump with 36 Gallon Cast Iron Tank 50 PSI

Original price was: $ 8,894.00.Current price is: $ 6,286.00.

The Sterlco 42530-JD Duplex 45 GPM Condensate Return Pump with 36 Gallon Cast Iron Tank 50 PSI offers (2) two bronze fitted 45 gallon per minute centrifugal pumps with 50 psi discharge pressure and 3 HP 1/60/115-208/230 or 3/60/208-230/460 volt electric motor, float switch, and automatic venting. Mechanical actuators are recommended for duplex pumps. Duplex Control panels are sold and ordered separately but are assembled as a unit at factory.

To view and order “optional control panel” for condensate pump sold separately, Click Duplex Control panels

Choose Mechanical Alternator (Recommended) *


The Sterlco 42530-JD Duplex 45 GPM Condensate Return Pump with 36 Gallon Cast Iron Tank 50 PSI sets new standards of performance. These Sterlco atmospherically vented condensate tanks are designed for pumping hot condensate throughout the steam system. The 4200 Series cast iron unit is designed to suit many applications with tank sizes ranging from 6 – 120 gallons. Reliable and efficient, each unit features heavy gauge, 3/16″ cast iron receivers 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, a nationwide network of stocking distributors means fast, easy, year round access to pumps and replacement parts. Additionally, this unit can be paired with Sterlco J & G centrifugal pumps. The Sterlco® Centrifugal Pumps are capable of pumping hot condensate up to 200° F. These pumps are equipped with heavy-duty cast iron pump housing and bracket, along with a brass impeller to assure long operating life. Customizable tanks and specialty pump options are available.      

Sterlco 42530-JD Standard Features:

  • Heavy-duty cast iron receivers
  • Simplex or duplex construction
  • Bronze fitted centrifugal pumps – Offers a wide range of pressures and GPM. Unique design features provide for ease of servicing.
  • Impeller: Made of brass for long life. Efficient design provides maximum capacity, minimum motor load.
  • Energy efficient 3450 RPM motors -Heavy-duty, ball bearing, close-coupled pump motors with stainless steel shaft. 3450 RPM for greater efficiency and more economical operation.
  • Automatic venting – Provides for efficient operation and long life by venting air and flushing seal area.
  • “Sterl-Seal” ceramic pump seal (250°F) – 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.
  • Heavy-duty float switch – Two-pole, drip proof case, stainless steel float and float rod, double-break silver-to-silver contacts. Float travel adjustment is easy, visible and accessible.
  • Wide range of options and accessories

Sterlco 42530-JD Optional Features:

  • Mechanical and electrical alternators
  • Gauge glass
  • Thermometer
  • Discharge pressure gauges
  • Isolation valves
  • Special motor construction, such as totally enclosed, washdown duty and explosion proof is available
  • Magnetic starters with H-O-A selector switches
  • 1750 RPM motors, larger pumping capacities and higher discharge pressures – consult factory
  • Elevated tanks are available
  • Complete NEMA 12 Control Panel


4200 Series Specifications Brochure

Additional information

Weight 460 lbs
Dimensions 35.38 × 27.34 × 18.63 in
Manufacturer Part Number


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