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Flojet G575215D Air Operated G57 Series Pump - 5 GPM, 1/2 Inch, Santoprene

Mfr. Model #:
KR Part #:
1.40 lbs
In Stock
Now Only!
starstarstarstarstar (21)
This G57 pump has a tough polypropylene body and a Santoprene diaphragm. 5 GPM, 1/2" fittings, 1/4" inlet.
Prep 65

Prop 65


Technical Specifications

Inlet Port: 1/4 inch
Max GPM: 5
Max Temperature: 120 degrees F
Max PSI: 100

Product Description

5 GPM Polypropylene Air Pump with Santoprene

Flojet's most popular air-operated diaphragm pump. Innovative compact design features a patented shuttle valve that eliminates stalling and provides a long life. These pumps boast a polypropylene body and high-quality elastomers that offer incredible chemical resistance. Quick-disconnect liquid and gas port fittings for easy installation.


  • 5 GPM flow rate
  • 1/2" hose barb fittings
  • 1/4" brass hose barb air inlet
  • Polypropylene body
  • Santoprene diaphragm and check valve seat
  • Liquid Temperature Range: 40° - 120° Fahrenheit
  • 100 PSI maximum pressure
  • 20 PSI minimum starting pressure


  • Highest flow rate for any air pump of comparable size
  • Stall-proof design with patented shuttle valve
  • Easy installation with all quick disconnect ports
  • Robust design with durable integral mounting
  • Sanitary design with inset molded diaphragm
  • Leak resistant radial seals, no critical o-ring seals
  • Quiet operation with large exhaust muffler

Ideal Fluids for Pumps with Santoprene Materials:

  • Potable water
  • Acids/alkalines
  • Soaps
  • Alcohols
  • Ketones

Fluids NOT Recommended for use with Santoprene:

  • Oils
  • Solvents
  • Soaps with solvents
  • D-Limonene
  • Aromatic hydrocarbons

WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm (For more information go to

Product Reviews

22  Customer Review(s)
5 Star
17  (77%)
4 Star
2  (9%)
3 Star
1  (5%)
2 Star
0  (0%)
1 Star
2  (9%)

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Been a reliable pump.
Reviewed by Seth  S
8/1/2023 10:12:41 AM
Good little pump at a decent price.
Reviewed by Kevin  B
5/11/2023 10:20:28 AM
These flojet pumps are very reliable and Kleen-Rite always has the best price.
Reviewed by Erik  S
3/3/2023 1:49:44 PM
Have always used flojets. Very reliable and they last. I've tried to rebuild them, but don't think it is worth the effort. They work after rebuild, but they don't last very long from my experience. With the effort and cost I prefer to buy a new one when needed.
Reviewed by Michael  L
1/20/2023 7:54:17 PM
I love the flojet pumps. Solid and durable.
Reviewed by Chris  G
11/4/2022 12:00:11 PM
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