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Machines & equipment for sale

Wilden Air Operated Double Diaphragm Pump

Used / Second Hand

Sold As Seen Price [?]
£ Login or Register for price
In stock now
From a working environment, Seen working by RSW, Good Condition, Current Model, Seen powered at RSW
Stock No
P1 01-3181-20
Year of Manufacture
From a working environment, Seen working by RSW, Good Condition, Current Model, Seen powered at RSW
56 Litres / Min
Process Application
Liquid Pumping
Other Info
Max size solids 1.6mm
Our Central Warehouse, Aldridge, UK
Weight (kgs)
External Dimensions (WxDxH mm) [?]
215 x 280 x 220
Your delivery options


Wilden P1 Plastic – Clamped Double Diaphragm Pump.

A top quality rugged and durable self-priming, double diaphragm pump. A Lube-free and non-stalling, this pump will handle any product that pours, from clear water to highly viscous, abrasive and chemically aggressive materials. Specially designed features within  the pump enables it  to handle suspended solids and abrasives without damage to the product or the pump.
The unique pump design utilizes far fewer parts than other pumps on the market. This results in longer operating life and easier maintenance at a lower cost.
Since these pumps are driven by compressed air, there is no need for shielded electrical connections or explosion-proof motors. All models can run dry because there are no close fitting or sliding parts in the fluid section. Flow rates can be controlled to produce from zero to maximum flow simply by increasing or decreasing air flow or pressure.

The Wilden® ½” / 13 mm – P1 Original™ AODD (Air Operated Double Diaphragm Pump) Plastic Series is renowned for its reliability and versatility due to its robust design. The range lends itself to simple installation and are easily overhauled.


  • Height 218 mm (8.6")
  • Width 208 mm (8.2")
  • Depth  203 mm (8.0")
  • Air Inlet 6 mm (1/4") Inlet 13 mm (1/2")
  • Outlet 13 mm (1/2")
  • Suction Lift   6.1 m  Dry (20') 9.5 m  Wet (31')
  • Displacement per Stroke .0.11 l (0.029 gal.)
  • Max. Flow Rate  56.0 lpm (14.8 gpm)
  • Max. Size Solids 1.6 mm (1/16") 

Displacement per stroke was calculated at 4.8 bar (70 psig) air inlet pressure against a 2 bar (30 psig) head pressure. Example: To pump 18.9 lpm (5 gpm) against a discharge pressure head of 2.8 bar (40 psig) requires 3.9 bar (57 psig) and 5.07 Nm3 /h

pdf icon Print / Download Wilden Air Operated Double Diaphragm Pump Datasheet

Additional files

Photographs taken prior refurbishment. Our refurbishment service is not available on all machines.