Flojet G57-520GA Air Operated Double Diaphragm Pump 5 GPM 3/8"
The Flojet G57-520GA is a compact air operated double diaphragm pump engineered for dependable fluid transfer in commercial and industrial environments. Designed with a durable polypropylene housing and Santoprene diaphragms, this pump delivers efficient performance for transferring chemicals, cleaning solutions, water-based fluids, inks, detergents, and other compatible liquids. Its self-priming capability and ability to run dry without damage make it a reliable choice for demanding fluid handling applications.
This 5 GPM pneumatic diaphragm pump operates using compressed air or CO2 with up to 100 PSI inlet pressure. The internal air motor and leak-resistant sealing system help provide smooth operation while reducing maintenance requirements. Large clog-resistant check valves allow the pump to pass small solids up to 1/8 inch, making it suitable for industrial cleaning systems, parts washers, chemical dispensing, car wash equipment, and fluid circulation systems.
Its compact footprint, corrosion-resistant materials, and 3/8-inch hose barb ports make the Flojet G57-520GA ideal for installations where space efficiency and reliable fluid transfer are essential. The pump is designed for continuous-duty commercial applications requiring stable pneumatic performance and long service life.
Key Features
- Air operated double diaphragm pump design
- Delivers flow rates up to 5 GPM
- Durable polypropylene housing construction
- Santoprene diaphragms and check valves for chemical resistance
- Self-priming operation up to 15 ft dry and 20 ft wet
- Handles small solids up to 1/8 inch diameter
- Can run dry without pump damage
- Internal air motor with quiet muffler system
- Compact lightweight design for flexible installation
- Compatible with compressed air or CO2 operation
Applications
- Chemical transfer systems
- Industrial cleaning equipment
- Car wash fluid dispensing
- Parts washer circulation
- Ink and solvent transfer
- Water-based fluid transfer
- Detergent dispensing systems
- Commercial fluid circulation
- General industrial pumping
- Spray and dosing equipment
Specifications
- Manufacturer: Flojet
- Model: G57-520GA
- Pump Type: Air Operated Double Diaphragm Pump
- Maximum Flow Rate: 5 GPM
- Port Size: 3/8 inch straight hose barb
- Air Inlet Size: 1/4 inch hose connection
- Maximum Air Inlet Pressure: 100 PSI
- Minimum Starting Pressure: 20 PSI
- Housing Material: Polypropylene
- Diaphragm Material: Santoprene
- Check Valve Material: Santoprene
- O-Ring Material: EPDM
- Spring Material: Hastelloy
- Maximum Liquid Temperature: 120°F
- Minimum Liquid Temperature: 40°F
- Self-Priming Height Dry: 15 ft
- Self-Priming Height Wet: 20 ft
- Maximum Noise Level: 87 dB
- Solids Handling Capability: Up to 1/8 inch
- Pump Drive: Internal Air Motor
- Submersible: No
FAQ Section
What type of fluids can the Flojet G57-520GA handle?
The pump is designed for compatible industrial and commercial fluids including detergents, cleaning chemicals, inks, water-based solutions, and certain mild chemical transfer applications.
Can the Flojet G57-520GA run dry?
Yes. The air operated diaphragm design allows the pump to run dry temporarily without causing internal damage, making it suitable for intermittent-duty applications.
Is the Flojet G57-520GA self-priming?
Yes. The pump is self-priming up to 15 feet dry and 20 feet wet, allowing flexible installation above or below the fluid source.
What air pressure is required for operation?
The pump requires a minimum starting pressure of 20 PSI and can operate with up to 100 PSI compressed air or CO2 supply.
Is this pump suitable for industrial chemical transfer?
Yes. Its polypropylene body, Santoprene diaphragms, EPDM seals, and Hastelloy springs provide strong chemical compatibility for many industrial transfer applications.
Does the pump support solids handling?
Yes. The pump can pass solids up to 1/8 inch diameter through the diaphragm chamber.
Can this pump be used for continuous operation?
The Flojet G57-520GA is designed for demanding commercial and industrial use with reliable pneumatic performance and durable internal components.
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