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Flojet G573215D Air Operated G57 Series Pump - 5 GPM, 1/2 Inch, Viton

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

Prop 65


Technical Specifications

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

Product Description

5 GPM Polypropylene Air Pump with Viton

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
  • Viton 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 Viton Materials:

  • Oils
  • Solvents
  • D-Limonene
  • Aromatic & halogenated hydrocarbons
  • Acids

Fluids NOT Recommended for use with Viton:

  • Ketones
  • Acetones
  • Automotive brake fluid
  • Ammonia
  • Ethanol

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

Frequently Asked Questions

Question:What is the air regulator recommended for this pump? - Thiago (01/07/2024)
Response:We recommend either REM364 or REP13FA
Question:Can the FLOJET be mounted in any position? Laying down or on Wall? - Keith (12/02/2020)
Response:Yes, however if mounting on the wall the ports must be facing down.
Question:Do these FloJet pumps have a warranty? If yes, what is the process? - Bobby (07/16/2020)
Response:Yes, Flojet pumps carry an 18 month factory warranty. Contact our customer service dept. for all warranty evaluations. 800-233-3873 or
Question:Does this flojet have a repair kit? - peter (04/26/2020)
Response:Yes, repair kit PN# FPK20730V
Question:Is their another pump comparable to the flojet G573215 for a cheaper price? I need it for degreaser. - Geoffrey (01/06/2020)
Response:No, that would be the best pump for your application. You could purchase the Santoprene model FP7040, but most likely will not hold up with degreaser.