Genuine Wilden AODD Diaphragm Pumps & Spare PartsWILDEN 4″ Spare Parts: T20, PS20 and XPS20
Spare parts for 4″ WILDEN T20, PS20 and XPS20 iron pumps: what is listed under 20- numbers, and which 3″ air kits the 4″ pumps share.

Model: Wilden P.025 (¼")
The Wilden P.025 is a genuine ¼” air-operated diaphragm pump for low-flow dosing and transfer — metal or plastic, in stock from a genuine Wilden supplier.
| Flow Rate | Up to 19 L/min (5 gpm) |
|---|---|
| Head | 86 m (8.6 bar / 125 psi) |
| Inlet / Outlet Diameter | ¼" (6 mm) |
| Material | aluminium, stainless steel, polypropylene, PVDF |
Not every job wants a big pump. Sometimes you just need to move a small, steady trickle of something — a reagent into a batch, a sample down a line, a bit of chemical from a drum — and precision matters more than volume. That’s the P.025.
It’s the smallest pump Wilden makes, a ¼” (6 mm) unit, but it doesn’t cut corners on the design. Sealless, self-priming, happy to run dry, and it won’t complain if you stall it against a shut valve. You pick the body to suit the fluid — aluminium or stainless for solvents, polypropylene or PVDF when it’s aggressive — and a PTFE or Santoprene diaphragm to go with it.
Everything we ship is genuine, and the common P.025 builds sit on our shelf ready to go. Tell us the fluid and the flow you’re after and we’ll pin down the exact model.
Genuine Wilden AODD Diaphragm Pumps & Spare PartsSpare parts for 4″ WILDEN T20, PS20 and XPS20 iron pumps: what is listed under 20- numbers, and which 3″ air kits the 4″ pumps share.
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