1 1/2" (38mm) Clamped Plastic Pro-Flo (P4)

The 1 1/2" 38mm Wilden Pro-Flo P4 AODD expanded the product portfolio to include a plastic pump series. Wilden drew upon his immense expertise in clamped pumps. These 38mm 1 1/2" plastic versions mirror the benefits of their metal counterparts, offering a straightforward and rugged design that is particularly well-suited for chemical applications. Designed and engineered with ease of maintenance in mind, clamped plastic pumps are simple to install and can be disassembled and reassembled using just a single tool. Throughout recent history, hundreds of thousands of Wilden’s clamped plastic diaphragm pumps have successfully moved billions of gallons of fluid yearly. 

Features & Benefits
• DIN and ANSI flanged inlet/discharge liquid connections
• Rotatable inlet and discharge for flexibility
• Decades of proven performance
• Clamped connections for faster maintenance
• Low cost
• Simple installation
• Ease of operation and maintenance

Wetted Housings - Materials
Polypropylene - 16.8 kg (37 lb)
PVDF - 21.3 kg (47 lb)

Non-Wetted Housings - Materials
Center Block - Polypropylene, Acetal
Air Valve - Polypropylene, Acetal
Air Chamber - Aluminum, PTFE-Coated Aluminum, Acetal, Stainless Steel, Halar-Coated Aluminum

Diaphragm Pump Specifications:

• Air Inlet: 1/2" FNPT

• Liquid Inlet: 38 mm (1-1/2")

• Liquid Discharge: 38 mm (1-1/2")v

• Connection Type: DIN/ANSI (Flanged)

• Maximum Suction Lift Capability:

  • Rubber – 4.88 m (16') Dry, 7.92 m (26') Wet

  • TPE – 3.96 m (13') Dry, 7.92 m (26') Wet

  • Full-Stroke PTFE – 4.7 m (15.3') Dry, 9.3 m (30.6') Wet

  • Reduced-Stroke PTFE – 3.05 m (10') Dry, 7.47 m (24.5') Wet

• Maximum Flow Rate:

  • Rubber – 348 lpm (92 gpm)

  • TPE – 354 lpm (94 gpm)

  • Full-Stroke PTFE – 352 lpm (92.9 gpm)

  • Reduced-Stroke PTFE – 261 lpm (69 gpm)

• Maximum Pressure: 8.6 bar (125 psi)

• Maximum Diameter Solids: 4.8 mm (3/16'')

• *Displacement Per Stroke:

  • Rubber – 1.19 L (0.314 gal)

  • TPE – 1.18 L (0.311 gal)

  • Full-Stroke PTFE – 1.0 L (0.27 gal)

  • Reduced-Stroke PTFE – 0.53 L (0.139 gal)

  • * 1 cycle = 2 strokes

Elastomer Options
Buna-N | -12°C to 82°C (10°F to 180°F)
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)
Polyurethane | -12°C to 66°C (10°F to 150°F)
Saniflex™ | -29°C to 104°C (-20°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.

Remarkable energy conservation and superior 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 P4 excels in a wide variety of industrial applications, such as:

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