
GK 1/2" Inch 15mm Aluminum Alloy Pneumatic Double Diaphragm Pump
Technical Specifications
| Max. Working Pressure | 100 psi(0.7Mpa, 7bar) |
| Max Flow Rate | 15 gpm(57 lpm) |
| Max Reciprocating Speed | 400 cpm |
| Max Suction Height (Dry) | 4.5m |
| Max permitted Grain | 3/32 in. (2.5mm) |
| Max Air Consunmption | 20scfm (10L/s) |
| Air Inlet Size | 1/4 in. |
| Air Outlet Size | 3/8 in. |
| Fluid Inlet Size | 1/2 in. |
| Fluid Outlet Size | 1/2 in. |
| Weight | 4.5kg |
No rotating parts:Avoid splashing of chemical liquids
Inherently explosion-proof : No electronic components, highly safe in chemical environments
Self protecting:Automatically shuts down when the outlet is blocked
Dry running capability:The pump can operate without liquid without damage.
Strong suction power:No need to pilot water (suction lift up to 5m)
Good through-pass performance:conveying liquids with high viscosity, particles.
Adjustable flow rate:flow rate can be adjusted easily via air source(between 0.1~0.84 MPa).
Simple structure with low maintenance costs:Parts can be replaced quickly and conveniently.
Our Advantages | |
Highlights
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Better sealing and ball life - The ball is twice grinded by professional machine - Half-arc ball chamber design - Reversible and reusable Valve seat Thus assuring better sealing and ball life, reducing maintenance costs. | ![]() |
Large volume flow chamber - The inner and outer surfaces of are hardened to make the fluid flow smoothly. - The pump shaft has been grinded and hardened for low friction, high wear and corrosion resistance.- The diaphragm block is integrated to avoid leakage. | ![]() |
High quality hardware - Outer hexagon all stainless steel with flange screws, better stability than the inner hexagon screws. | ![]() |








Applications
Wastewater Treatment
Commonly used in the fields of sediment and wastewater treatment. It is recommended to select aluminum alloy, cast iron or PP.
Biomedical Sciences
Commonly used for transporting solid powders, liquid medicines, solvents, etc. It is recommended to choose PP/PVDF/stainless steel.
Oil and Gas Applications
Commonly used in natural gas systems, workover equipment, offshore platforms, sedimentation tank emptying, etc. It is recommended to select stainless steel or aluminum alloy.
Coatings Industry
Commonly used for applications such as adhesive transfer, grouting, handling of viscous materials, and paint filtration. Pump bodies made of aluminum alloy or stainless steel are recommended.
New Energy Industry
Commonly used for conveying cathode slurries, fluorine-containing compounds, and other media. Pump bodies made of PP or PVDF are recommended.
Shipyard & Offshore Engineering
Commonly used for the transfer of seawater, bilge wastewater, fuel oil, and lubricating oil. Pump bodies made of cast iron or stainless steel are recommended.










