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.

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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.

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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.

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P25-Plastic

6 mm (1/4") Pro-Flo® Series Bolted Plastic Pump P25

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
  • PTFE – 1.9 m (6.2') Dry, 9.3 m (30.6') Wet
MAX FLOW RATE
  • PTFE – 16.7 lpm (4.4 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • 0.7 mm (1/32'')
DISPLACEMENT PER STROKE *
  • PTFE – 0.04 L (0.01 gal)
  • * 1 cycle = 2 strokes
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Features and Benefits

The Wilden® bolted plastic air-operated double-diaphragm (AODD) pump combines maximum performance and efficiency with superior containment. Wilden's bolted-construction pumps offer improved flow rates and a redesigned liquid path that reduces internal friction for maximum output and longer diaphragm life.

  • NPT or BSPT threaded inlet/discharge liquid connections
  • Decades of proven performance
  • Bolted construction for superior containment
  • Large-solids passage
  • High suction lift
  • Ease of operation and maintenance
  • Increased on/off reliability
  • Longest Mean Time Between Repair (MTBR)

Downloads

EOMs

Model: P25 | Code: WIL-11020-E-03

Dimensional Drawings

Spec Sheets

Model: P.025 | Code: WIL-10090-T-01

Performance and Specifications

Dimensions

Dim-P25-6mm.25in-BPP

Note: Dimensions vary by material and connection. For additional information, please refer to the P25 Plastic Manual.

Flow Curve – PTFE-Fitted

Flo-P25-6mm.25in-BPP

Note: Additional performance curves can be found in the P25 Plastic 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
  • PTFE – 16.7 lpm (4.4 gpm)
MAX PRESSURE
  • 8.6 bar (125 psi)
MAX DIAMETER SOLIDS
  • 0.7 mm (1/32'')
MAX SUCTION LIFT CAPABILITY
  • PTFE – 1.9 m (6.2') Dry, 9.3 m (30.6') Wet
DISPLACEMENT PER STROKE *
  • PTFE – 0.04 L (0.01 gal)
  • * 1 cycle = 2 strokes

Wetted Housings

Material Ship Weight
Polypropylene 2 kg (4.4 lb)
PVDF 2 kg (4.4 lb) 

Non-Wetted Housing

Description Materials
Center Section Polypropylene
Air Valve Polypropylene

Elastomer Options

Material Temperature Limits
EPDM -51°C to 138°C (-60°F to 280°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)

* 4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only