PS1 1/2”/ 13 mm Original™ Clamped Metal Pump

The Wilden® PS1 13 mm (1/2”) Original™ Clamped Metal Pump is a high-performing pump that provides reliability and energy savings while its clamped configuration allows for easier maintenance, diaphragm replacement and cleaning. The footprint of the PS1 matches that of the Wilden PX1, which enables direct replacement of a PX1 with no repiping necessary. With less components (no dial) and 7% more efficient than the PX1, the backward capability of the PS1 makes it an easy, cost-effective way to enhance and upgrade existing pump performance.

Available wetted-path materials are aluminum, stainless steel or alloy C.

The Wilden PS1 comes equipped with the of the Pro-Flo® SHIFT Air Distribution System (ADS) that provides 60% savings in air consumption, more yield per SCFM, precisely metered air consumption for less product waste and maximum Mean Time Between Repair (MTBR). Available Pro-Flo SHIFT center section materials are aluminum, nickel-plated aluminum, stainless steel and polypropylene.

Elastomers are available in the following materials:

  • Buna-N
  • EPDM
  • Polyurethane
  • PTFE
  • Saniflex™
  • Viton®
  • Wil-Flex™
PS1 Aluminum

Features & Benefits

Benefits and Features

The Successful Solution

  • Decades of proven performance
  • Intrinsically safe
  • Clamped connections for faster maintenance
  • Self-priming
  • Variable speed
  • Dry run without damage
  • Single-point exhaust option
  • Shear sensitive
  • Widest range of materials in the industry


  • Longest Mean Time Between Repair (MTBR)
  • Proven air distribution systems (ADS)
  • Simplicity of design
  • Superior anti-freezing
  • Increased On/Off reliability


  • Low cost
  • Simple installation
  • Ease of maintenance

Contact your local authorized distributor today to purchase a PS1 pump!




MaterialShip Wt
Aluminum 6 kg (13 lb)
Stainless Steel 9 kg (20 lb)
Alloy C 9.5 kg (21 lb)


Center Block Aluminum
Air Valve Aluminum


  • Rubber - 60.2 lpm (15.9 gpm)
  • TPE - 60.2 lpm (15.9 gpm)
  • PTFE – 59.8 lpm (15.8 gpm)

MAX PRESSURE = 8.6 BAR (125 psig)


  • Rubber - 5.9 m Dry (19.3’), 9.8 m Wet (32.3’)
  • TPE - 5.7 m Dry (18.7’), 8.3 m Wet (27.2’)
  • PTFE - 4.3 m Dry (14.2’), 9.7 m Wet (31.7’)


  • 1.6 mm (1/16”)


  • Rubber - 0.10 L (0.027 gal)
  • TPE - 0.10 L (0.026 gal)
  • PTFE - 0.10 L (0.026 gal)


Elastomer Options

MaterialTemperature Limits
Buna-N –12°C to 82°C (10°F to 180°F)
EPDM –51°C to 138°C (–60°F to 280°F)
Saniflex™ –29°C to 104°C (–20°F to 220°F)
SIPD PTFE with EPDM-backed 4°C to 137°C (40°F to 280°F)
SIPD PTFE with Neoprene-backed 4°C to 93°C (40°F to 200°F)
PTFE1 4°C to 104°C (40°F to 220°F)
Viton® FKM –40°C to 177°C (–40°F to 350°F)
Wil-Flex™ –40°C to 107°C (–40°F to 225°F)



CE Mark (Conformité Européene - European Conformity)


Wilden Pump & Engineering LLC has met the criteria for placing the CE mark on our product line. On December 3, 1999, Wilden fully self-certified its product line by meeting all the regulations of the Machinery and PED (Pressure Equipment) Directives. Every pump manufactured by Wilden will now receive the CE mark. Each pump box will also include a Safety Supplement manual in the eleven official languages of the European Community. This CE mark certification is indicative of Wilden's pledge to providing our distributor network with all the sales tools necessary to excel in a global economy.

Wilden ATEX Product Summary

It is only natural that the worldwide leading producer of air-operated, double-diaphragm pumps complies with the ATEX 100A directive for explosive atmospheres. The European community and their safety are of utmost importance to us. We take responsibility for not only our product, but also for the supporting documentation and compliance of necessary directives. Wilden is proud to introduce our metallic X pumps that comply with ATEX 94/9/EC Group I, category M2 and Group II, category 2 zones G & D. Our plastic X pumps comply with ATEX 94/9/EC Group II, category 2, zone G




Spec Sheet

Dimensional Drawings

Solid Model Drawings




Pro-Flo SHIFT - How It Works Animation


Watch this How It Works Animation to see exactly how Wilden's Pro-Flo SHIFT works compared to other AODD pumps. In this video you will see how the Pro-Flo SHIFT is more simple, reliable, and efficient compared to traditional AODD competitors. It is truly as easy as plug, pump and save!