1/4" (6mm) Clamped Metal Pro-Flo (P.025)

The 6 mm (1/4") Pro-Flo® Series P.025 clamped metal pumps, designed by Jim Wilden, feature the original air-operated double-diaphragm pump design. These pumps offer a simple and rugged design suitable for general industrial applications. With ease of maintenance in mind, clamped pumps are straightforward to install and allow quick serviceability. They can be disassembled and reassembled using only a single tool. Over time, hundreds of thousands of Jim’s clamped diaphragm pumps have successfully pumped billions of gallons of fluid annually.

Features & Benefits
• NPT and BSP threaded inlet/discharge liquid connections for quick disconnect/connect
• Decades of proven performance
• Clamped connections for faster maintenance
• Low cost
• Simple installation
• Ease of operation and maintenance

Wetted Housings - Materials
Aluminum - 1.8 kg (4.0 lb)
Stainless Steel - 4.0 kg (8.9 lb)
Hastelloy - 4.3 kg (9.5 lb)

Non-Wetted Housings - Materials
Center Block - Polypropylene, Acetal
Air Valve - Polypropylene, Acetal

Diaphragm Pump Specifications:

• Air Inlet: 1/8" FNPT

• Liquid Inlet: 6 mm (1/4")

• Liquid Discharge: 6 mm (1/4")

• Connection Type: NPT/BSPT (Threaded)

• Maximum Suction Lift Capability:

  • Rubber – 3.3 m (10.8') Dry, 9.3 m (30.6') Wet

  • TPE – 3.3 m (10.8') Dry, 9.3 m (30.6') Wet

  • PTFE – 4 m (13') Dry, 9.5 m (31.2') Wet

  • Maximum Flow Rate:

  • Rubber – 18.9 lpm (5 gpm)

  • TPE – 18.9 lpm (5 gpm)

  • PTFE – 18.9 lpm (5 gpm)

• Maximum Pressure: 8.6 bar (125 psi)

• Maximum Diameter Solids: 0.4 mm (1/64")

  • *Displacement Per Stroke:

  • Rubber – 0.02 L (0.005 gal)

  • TPE – 0.02 L (0.005 gal)

  • PTFE – 0.02 L (0.005 gal)

  • * 1 cycle = 2 strokes

Elastomer Options
Buna-N | -12°C to 82°C (10°F to 180°F)
FKM | -40°C to 177°C (-40°F to 350°F)
Neoprene | -18°C to 93°C (0°F to 200°F)
PTFE* | 4°C to 104°C (40°F to 220°F)
Wil-Flex™ | -40°C to 107°C (-40°F to 225°F)
* 4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only.

The Wilden® Pro-Flo® Air Distribution System (ADS) provides excellent energy conservation and maximizes the mean time between repairs (MTBR) for your Air-Operated Double-Diaphragm (AODD) pump. Designed with simplicity and durability in mind, the Pro-Flo ADS is ideal for a wide range of industrial applications, such as:

• Chemical
• Paint & Coatings
• Mining
• Oil & Gas
• Water & Wastewater
• Liquid Terminals
• Process