Wilden Products

Durability, Reliability and Cost Savings

Not only are Wilden pumps the most cost-effective, reliable and energy-efficient solutions available, but our state-of-the-art air distribution systems (ADS) significantly increase positive displacement pump productivity by reducing air consumption and maintenance for the most energy-efficient AODD pump operation possible.

View Our Products

Specialty Series

View All

Wilden Markets

Wilden® solves pumping challenges across the spectrum

Wilden® positive displacement air-operated double-diaphragm (AODD) pump solutions are leading the way in a host of industries and applications.

View Our Markets

Wilden Support

The Wilden World of Service and Support - Assistance Beyond Expectations

Wilden® is always ready to assist with technical support for Wilden AODD pumps, parts or accessories.

View Our Support Options
P.025 Pro-Flo .25 AL P.025 Pro-Flo .25 SS

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

AIR INLET
  • 1/8" FNPT
LIQUID INLET
  • 6 mm (1/4")
LIQUID DISCHARGE
  • 6 mm (1/4")
CONNECTION TYPE
  • NPT/BSPT (Threaded)
MAX 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
MAX FLOW RATE
  • Rubber – 18.9 lpm (5 gpm)
  • TPE – 18.9 lpm (5 gpm)
  • PTFE – 18.9 lpm (5 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX 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
Order Online
  • icon_cert-CE

Features and Benefits

Featuring the original air-operated double-diaphragm pump design by Jim Wilden, clamped metal pumps offer a simple, rugged design for general industrial applications. Designed with ease of maintenance in mind, clamped pumps are simple to install and are made for quick serviceability, allowing the pump to be taken apart and put back together with only a single tool. Proven by the test of time, hundreds of thousands of Jim Wilden's clamped pumps have pumped billions of gallons of fluid on an annual basis.

  • 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

Downloads

EOMs

Model: P.025 | Code: WIL-10080-E-06

Dimensional Drawings

Spec Sheets

Model: P.025 | Code: WIL-10080-T-01

Performance and Specifications

Dimensions

Dim-P.025-6mm.25in-CMP

Note: Dimensions vary by material and connection. For additional information, please refer to the P.025 Metal Manual.

Flow Curve – TPE-Fitted

Flo-P.025-6mm.25in-CMP

Note: Additional performance curves can be found in the P.025 Metal Manual.

AIR INLET
  • 1/8" FNPT
LIQUID INLET
  • 6 mm (1/4")
LIQUID DISCHARGE
  • 6 mm (1/4")
CONNECTION TYPE
  • NPT/BSPT (Threaded)
MAX FLOW RATE
  • Rubber – 18.9 lpm (5 gpm)
  • TPE – 18.9 lpm (5 gpm)
  • PTFE – 18.9 lpm (5 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • 0.4 mm (1/64")
MAX 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
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

Wetted Housings

Material Ship Weight
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

Description Material
Center Block Polypropylene, Acetal
Air Valve Polypropylene, Acetal

Elastomer Options

Material Temperature Limits
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