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Flojet G257301A Air Operated Dual Diaphragm Two Pump Unit - 10 GPM, 1/2 In. Ports, Viton Seals

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4.11 lbs
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FLOJET G-57 Series Two Pump Units are ideal for heavy-duty industrial applications. 10 GPM flow is reliable and consistent. Viton seals handle oils, solvents, D-Limonene, aromatic and halogenated hydrocarbons, and acids.
Prep 65

Prop 65


Technical Specifications

Max PSI: 100
Max Temperature: 120 degrees F
Inlet Port: 1/2 inch
Max GPM: 10

Product Description

Flojet G257 AODD Two Pump Unit

This heavy-duty FLOJET G257 Air Operated Double Diaphragm Two Pump Unit is built for commercial and industrial applications, with high flow rates at low pressures. Polypropylene mounting brackets and manifolds, along with glass-reinforced polypropylene housing and check valve material, provided durability. Viton diaphragm and check valve seats allow the pump to handle substances including oils, solvents, D-Limonene, aromatic and halogenated hydrocarbons, and acids.

Dimensions: 10.1" x 5.2" x 12.9"


  • Maximum Volume: 10 GPM
  • Maximum Pressure: 100 PSI 
  • Minimum Fluid Temperature: 40°F
  • Maximum Fluid Temperature: 120°F
  • Air Inlet/Outlet Ports: 1/4" Hose Barb
  • Inlet Port: 1/2" NPT
  • Outlet Port: 1/2" NPT
  • Includes:
    • Standard Flow Pump - G573000A
    • Reverse Flow Pump - G578000A 

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:Can a 14cfm air compressor be used for this pump? - Jeff (12/28/2020)
Response:Yes, that would be plenty for this pump.
Question:what is the diffrence between the flojet Flojet G257301A, and the G257501A.?? - Marco (12/27/2020)
Response:The 501 pump has a santoprene diaphragm for mild detergents, the 301 pump has a Viton diaphragm for acids and harsh chemicals
Question:How many CFM at what PSI is needed to push this pump? What size gas air compressor? - John (06/01/2020)
Response:The only spec we have is, the maximum air consumption is 2.8 cfm @ 100 PSI per pump.