IMPA: 591610

Polypropylene Pneumatic Diaphragm Pump P.025 – Chemical Resistant & Durable

The Polypropylene Pneumatic Diaphragm Pump Model P.025 is engineered for demanding marine and industrial applications requiring excellent chemical resistance. Constructed with a rugged polypropylene casing and PTFE (Teflon) diaphragms, balls, and valve seats, this pump withstands aggressive acids, caustics, and abrasive fluids with ease. Its air-operated design ensures safe operation in hazardous environments, eliminating electrical spark risks.

With a dry suction lift of 9 feet and a wet suction lift of 31 feet, the P.025 delivers reliable fluid transfer even from deep tanks. Compact dimensions (6.4"H x 5.7"W x 4.5"D) and standard 1/4" NPT/BSP female ports simplify installation in tight spaces. Ideal for bilge pumping, waste handling, chemical transfer, and abrasive slurry applications on ships and offshore platforms.

Optimized for longevity, the PTFE diaphragm offers exceptional flex life and resistance to wear, reducing maintenance downtime. The all-polypropylene wetted path prevents corrosion, making this pump a cost-effective solution for challenging marine environments.

Key Features

Technical Specifications

SpecificationValue
ModelP.025
Standard CasingPolypropylene
Diaphragm MaterialPTFE (Teflon)
Ball & Seat MaterialPTFE (Teflon)
Dry Suction Lift9 ft
Wet Suction Lift31 ft
Air Inlet1/8" NPT
Water Inlet1/4" BSP/NPT Female
Water Outlet1/4" BSP/NPT Female
Height6.4"
Width5.7"
Depth4.5"
IMPA Code591610

Frequently Asked Questions

What chemicals can this pump handle?

The PTFE diaphragms and polypropylene casing provide excellent resistance to most acids, bases, solvents, and abrasive fluids. Always verify compatibility with your specific chemical at operating temperature.

Can this pump run dry without damage?

Yes, the P.025 is designed for dry running. The PTFE diaphragms are self-lubricating and can operate without fluid for short periods without damage.

How do I connect the air supply?

Use the 1/8" NPT air inlet. Ensure clean, dry, regulated compressed air (typically 20-100 psi). A filter-regulator-lubricator is recommended for optimal performance.

What is the maximum operating temperature?

Polypropylene and PTFE can typically handle temperatures up to 180°F (82°C). Confirm temperature limits for your specific fluid.

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