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

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

The 6mm (1/4") Pro-Flo® series Wilden® bolted plastic air-operated double-diaphragm (AODD) pump combines maximum performance and efficiency with superior containment. Wilden's bolted-construction diaphragm pumps offer drastically improved flow rates and a redesigned liquid path that reduces internal friction for maximum output and longer diaphragm life.

Features & Benefits
• 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)

Wetted Housings - Materials
Polypropylene - 2 kg (4.4 lb) | PVDF - 2.6 kg (5.75 lb)

Non-Wetted Housings - Materials
Center Section - Polypropylene | Air Valve - Polypropylene

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: PTFE – 1.9 m (6.2') Dry, 9.3 m (30.6') Wet
  • Maximum Flow Rate: PTFE – 16.7 lpm (4.4 gpm)
  • Maximum Pressure: 8.6 bar (125 psi)
  • Maximum Diameter Solids: 0.4 mm (1/64")
  • *Displacement Per Stroke: PTFE – 0.04 L (0.01 gal) * 1 cycle = 2 strokes

Elastomer Options
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.

Exceptional energy conservation and the maximum mean time between repair (MTBR) for your Air-Operated Double-Diaphragm (AODD) pump with the simple yet durable Wilden® Pro-Flo® Air Distribution System (ADS). The Pro-Flo excels in a wide variety of industrial applications, such as:

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

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