Description
AirFlow 20 Gallon Simplex Condensate Unit
The AirFlow 20 Gallon Simplex Condensate Unit is a
single-pump condensate recovery package designed to collect returning
condensate in a vented receiver and pump it back toward the boiler room or
other condensate-handling equipment.
The 20 gallon simplex series is available with multiple pump selections
from 1/2 HP through 2 HP to match different condensate flow and
discharge-pressure requirements. Pump selection should be based on the
required GPM and total discharge pressure or total dynamic head rather
than horsepower alone.
Available 20 Gallon Simplex Models
| Model | Motor | Pump Performance | Discharge | Receiver |
|---|---|---|---|---|
| AFP-20S-C | 1/2 HP |
35 GPM @ 10 PSI 28 GPM @ 20 PSI 15 GPM @ 30 PSI |
1″ | 20 gal |
| AFP-20S-D | 3/4 HP |
54 GPM @ 10 PSI 36 GPM @ 20 PSI 27 GPM @ 30 PSI 10 GPM @ 40 PSI |
1″ | 20 gal |
| AFP-20S-E | 1 HP |
58 GPM @ 10 PSI 50 GPM @ 20 PSI 40 GPM @ 30 PSI 25 GPM @ 40 PSI |
1″ | 20 gal |
| AFP-20S-F | 1-1/2 HP |
69 GPM @ 10 PSI 62 GPM @ 20 PSI 50 GPM @ 30 PSI 35 GPM @ 40 PSI |
1″ | 20 gal |
| AFP-20S-G | 2 HP |
82 GPM @ 10 PSI 75 GPM @ 20 PSI 64 GPM @ 30 PSI 39 GPM @ 40 PSI |
1-1/2″ | 20 gal |
20 Gallon Receiver Information
- Receiver capacity: 20 gallons
- Configuration: Simplex / single pump
- Receiver dimensions: approximately 24″ × 14.5″ × 14.5″
- Overall dimension with pump: approximately 27.5″
- Condensate return connection: 2″
- Pump discharge: 1″ on C through F; 1-1/2″ on G
- Electrical options: single-phase and three-phase configurations
The condensate return connection is located on the rear side of the
receiver. Refer to the AirFlow dimensional drawing for complete connection
locations, dimensions, and installation details before ordering or laying
out piping.
Selecting the Correct Pump
Receiver capacity and pump horsepower are separate selections. Choose the
pump model based on the required condensate flow and discharge pressure or
total dynamic head. If these values are not known, contact Rema before
ordering for assistance selecting the correct model.
Select the required motor voltage and phase when ordering.
Three-phase units require an existing motor starter or control panel
at the installation.
Optional Accessories & Upgrades
AirFlow condensate units are available with optional accessories and
upgrades for different installation, environmental, and operating
requirements. Availability and compatibility may vary by receiver size,
pump model, electrical configuration, and application.
- Stainless steel 1/4″ thick receiver
- Multi-stage high-pressure pumps
- TEFC or explosion-proof motors
- Simplex or duplex control panel
- NEMA 4, NEMA 4X, or explosion-proof rated panels
- Isolation valves situated between the pump and receiver
- Thermometer
Contact Rema for accessory pricing and to confirm compatibility with the
selected unit before ordering.
Typical Applications
AirFlow simplex condensate units may be used in commercial and industrial
steam applications where condensate must be collected and mechanically
pumped from a remote return point.
- Commercial HVAC and steam heating systems
- Boiler rooms
- Schools, hospitals, apartments, and institutional facilities
- Commercial laundries and dry cleaning plants
- Steam coils and heat exchangers
- Industrial and process-steam applications
Technical Resources
Use the product buttons above to view the dimensional drawing, pump
performance curve, and AirFlow owner’s manual. Additional sizing,
installation, application, and technical information is available on our
complete AirFlow condensate recovery information page.
Related AirFlow Condensate Equipment
-
Shop all Simplex Condensate Units
-
View Duplex Condensate Units
for applications requiring two pumps, alternating operation, or additional redundancy. -
AirFlow Condensate Units Shop
-
AirFlow Condensate Recovery Units — Sizing & Technical Information
Need help selecting a unit?
Send Rema your boiler size or condensate load, required GPM, discharge
pressure or TDH, voltage, and phase. We can help confirm the appropriate
AirFlow model before ordering.
Contact Rema for sizing help.


Need help selecting a unit?