Wilden® Original™ Series Clamped Plastic AODD Pumps-- Rugged and Easy to Maintain

The legendary Wilden® Original™ Series clamped plastic Air-Operated Double-Diaphragm (AODD) Pumps ensure reliability without sacrificing ease of maintenance. The Original Series AODD pumps are ready for rugged utilitarian applications that require a robust design, yet offer simple installation and easy serviceability.

Wilden Original Series plastic pumps are a great choice when chemical compatibility is a factor and the chemicals pumped are not compatible with metal pumps. Wilden pumps have the largest material and elastomer offerings in the industry to meet any abrasion, temperature and chemical-compatibility challenges. A variety of connection options and specialized air distribution systems (ADS) are also available for your specific application needs.

The Successful Solution

  • Decades of proven performance
  • Intrinsically safe
  • 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

Original™ Series Clamped Plastic Pumps

A.025 / A.025P - 6 mm (1/4") Plastic Pump

P.025 - 6 mm (1/4") Plastic Pump

A1 & A1P - 13 mm (1/2") Plastic Pump

P1 - 13 mm (1/2") Plastic Pump

A2 - 25 mm (1'') Plastic Pump

P2R - 25 mm (1") Plastic Pump

P4 - 38 mm (1-1/2") Plastic Pump

PS4 – 38 mm (1-1/2“) Plastic Pump

P8 - 51 mm (2") Plastic Pump

PS8 – 51 mm (2”) Plastic Pump