51 mm (2") Pro-Flo® Series Clamped Metal Pump

P8 Features

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
Model Number: P8
Product Name: 51 mm (2") Pro-Flo® Series Clamped Metal Pump
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Dimensions

Note: Dimensions vary by material and connection. For additional information, please refer to the P8 Metal Manual.

Flow Curve – TPE-Fitted

Note: Additional performance curves can be found in the P8 Metal Manual.

Specifications

Air Inlet
1/2" FNPT
Liquid Inlet
51 mm (2")
Liquid Discharge
51 mm (2")
Connection Type
NPT/BSPT (Threaded)
Max Pressure
8.60 bar (125.00 psi)
Max Diameter Solids
6.40 mm (125")
Max Suction Lift Capability
Rubber: 6.90m (22.70') Dry, 8.60m (28.40') Wet
TPE: 6.70m (22.10') Dry, 8.60m (28.40') Wet
Full-Stroke PTFE: 6.70m (22.10') Dry, 9.00m (29.50') Wet
Reduced-Stroke PTFE: 4.60m (15.00') Dry, 9.50m (31.00') Wet
Ultra-Flex™: 4.90m (16.00') Dry, 8.80m (29.00') Wet
Max Flow Rate
Rubber: 623.00 lpm (165.00 gpm)
TPE: 630.00 lpm (166.00 gpm)
Full-Stroke PTFE: 618.00 lpm (163.00 gpm)
Reduced-Stroke PTFE: 496.00 lpm (131.00 gpm)
Ultra-Flex™: 526.00 lpm (139.00 gpm)
Displacement Per Stroke
Rubber: 2.6 L (0.7 gal)
TPE: 2.8 L (0.75 gal)
Full-Stroke PTFE: 2.6 L (0.7 gal)
Reduced-Stroke PTFE: 1.67 L (0.439 gal)
Ultra-Flex™: 2.12 L (0.56 gal)

Wetted Housings

Material Ship Wt
Aluminum 32.00 kg (70.00 lb)
Stainless Steel 51.00 kg (112.00 lb)
Cast Iron 47.00 kg (104.00 lb)
Alloy C 52.00 kg (114.00 lb)

Non-Wetted Housings

Description Material
Center Block Polypropylene
Air Valve Polypropylene
Air Chamber Aluminum, PTFE-Coated, Nickel-Plated, Stainless Steel, Halar-Coated Aluminum

Elastomer Options

Material Temperature Limits
Buna-N -12.00°C to 82.00°C (10.00°F to 180.00°F)
EPDM -51.00°C to 138.00°C (-60.00°F to 280.00°F)
FKM -40.00°C to 177.00°C (-41.00°F to 350.00°F)
Neoprene -18.00°C to 93.00°C (0.00°F to 200.00°F)
PTFE* 4.00°C to 104.00°C (40.00°F to 220.00°F)
Polyurethane -12.00°C to 66.00°C (10.00°F to 150.00°F)
Saniflex™ -29.00°C to 104.00°C (-20.00°F to 220.00°F)
Wil-Flex™ -40.00°C to 107.00°C (-40.00°F to 225.00°F)
* 4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only