IMPA: 591701

Pneumatic Diaphragm Pumps for Marine Ship Supply

The pneumatic diaphragm pump is a versatile and reliable transfer solution for marine applications. Also known as an air-operated double diaphragm (AODD) pump, it is widely used on board vessels for pumping bilge water, fuel, chemicals, and other fluids. As a leading ship chandler, we supply IMPA 591701 compliant diaphragm pumps that meet the rigorous demands of the maritime industry.

These pumps are powered by compressed air, eliminating the need for electrical connections and ensuring safe operation in hazardous environments. The double diaphragm design provides excellent self-priming capabilities, dry-run protection, and the ability to handle viscous, abrasive, or aggressive fluids without damage. Constructed from corrosion-resistant materials, they are built to withstand the harsh conditions of the marine environment.

Ideal for shipyards, offshore platforms, and vessel maintenance, our range of pneumatic diaphragm pumps ensures smooth and efficient fluid transfer. Available with various connection sizes and material options, they are an essential item for any ship's inventory. Contact our ship supply team for more details.

Key Features

Technical Specifications

SpecificationValue
Pump TypePneumatic Double Diaphragm Pump
IMPA Code591701
Inlet / Outlet Size1" (25 mm) NPT (Available in 1/4" – 3")
Max Flow Rate120 L/min (32 GPM)
Maximum Suction Lift7.6 m (25 ft)
Maximum Discharge Head70 m (230 ft)
Air Supply Pressure2.1 – 8.3 bar (30 – 120 psi)
Diaphragm MaterialPTFE / Santoprene (available options)
Body MaterialAluminum / Stainless Steel
ConnectionsNPT Female
Weight15 kg (33 lbs)

Frequently Asked Questions

How does a pneumatic diaphragm pump work?

The pump uses compressed air to move two diaphragms back and forth, creating a pumping action. It alternately fills and discharges fluid through a system of check valves, ensuring smooth and continuous flow.

Can it run dry without damage?

Yes, the pump is designed to run dry without causing damage to the diaphragms. This makes it safe for priming, shutdown, and brief periods of no-fluid operation.

What fluids can be pumped with this unit?

It can handle a wide range of fluids, including seawater, fuel oils, chemicals, sewage, and abrasive slurries. Material compatibility should be verified for specific chemical applications.

What is the recommended air supply pressure?

Typically, compressed air between 30 and 120 psi (2.1 to 8.3 bar) is required. Use an air regulator to control the flow rate and discharge pressure.

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