Wilden® PS20 – 4" / 102 mm Original™ Metal Air-Operated Double-Diaphragm (AODD) Pump

The Wilden® PS20 – 4" / 102 mm Original Clamped Metal Air-Operated Double-Diaphragm (AODD) Pump ensures reliability without sacrificing ease of maintenance. With simple installation and easy serviceability, it’s ready for rugged utilitarian applications that require a robust design.

Available wetted path material is cast iron.

The Wilden PS20 comes equipped with 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, stainless steel and polypropylene.

Elastomers are available in the following materials:

  • Buna-N
  • EPDM
  • Geolast ®
  • Neoprene
  • Polyurethane
  • PTFE
  • Saniflex
  • Vilton ®
  • Wil-Flex

Features & Benefits

Benefits and Features

The Successful Solution

  • Decades of proven performance
  • Intrinsically safe
  • Clamped connections for faster maintenance
  • Self-priming
  • Dry-run without damage
  • Single-point exhaust option
  • Viscous and non-viscous product transfer
  • Shear-sensitive
  • Widest range of materials in the industry

Dependable

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

Economical

  • Low cost
  • Simple installation
  • Ease of maintenance

Performance

Performance

WETTED HOUSINGS

(Water Chambers and Manifolds)

MaterialShip Wt
Cast Iron 223 kg (492 lbs)

NON-WETTED HOUSINGS

DescriptionMaterial
Center Section Aluminum, Stainless Steel, Polypropylene
Air Valve Aluminum, Anodized Aluminum, Stainless Steel, Polypropylene

FLOW RATE TO 1048 LPM (277 GPM)

MAX PRESSURE = 8.6 BAR (125 PSIG)

MAXIMUM SUCTION LIFT CAPABILITY

4.4 m (14.4’) Dry, 8.6 m (28.4’) Wet

MAXIMUM DIAMETER SOLIDS

35 mm (1-3/8”)

DISPLACEMENT PER STROKE

  • Rubber- 4.5 l (1.2 gal)
  • TPE EZ-Install- 4.4 l (1.16 gal)
  • PTFE Full Stroke- 4.2 l (1.13 gal)

Elastomer

Elastomer Options

MaterialTemperature Limits
Buna-N -12.2 to +82.2 °C (+10 to +180 °F)
EPDM -51.1 to +137.8 °C (-60 to +280 °F)
Geolast ® -40 to +82 °C (-40 to +180 °F)
Neoprene -17.8 to +93.3 °C (+0 to +200 °F)
Polyurethane -12.2 to +65.6 °C (+10 to +150 °F)
PTFE +4.4 to +104.4 °C (+40 to +220 °F)
Saniflex -28.9 to +104.4 °C (+20 to +220 °F)
Viton ® -40 to +176.7 °C (-40 to +350 °F)
Wil-Flex -40 to +107.2 °C (-40 to +225 °F)

Certifications

Certifications

ATEX (ATmosphere EXplosible)

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.

CE Mark (Conformité Européene - European Conformity)

CE

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.

Downloads

Downloads

EOMS

Spec Sheet

Solid Metal Drawings

Dimensional Drawings

Brochures

Videos

Videos

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!