Genuine Wilden AODD Diaphragm Pumps & Spare PartsWilden T15 Valve Seat 15-1120-51 (Neoprene)
15-1120-51 is a neoprene valve seat for the Wilden T15 — the surface each check ball lands on. Wear here mimics a bad check ball closely.

Genuine Wilden AODD pumps for oil, fuel and lubricant transfer — self-priming, sealless, and available conductive for flammable service. In stock.
| Flow Rate | model-dependent (1/2-inch–2-inch range) |
|---|---|
| Head | up to 86 m (8.6 bar / 125 psi) |
| Power | air-operated (conductive option) |
| Inlet / Outlet Diameter | 1/2-inch–2-inch (13–51 mm) |
| Material | aluminium or conductive; Buna-N / Viton diaphragm |
Moving oil and fuel sounds simple until you count what can go wrong: static building on flammable fuel, the odd slug of water or debris in the line, and the need to lift product out of a drum without a flooded suction. Diaphragm pumps take the lot in stride. They self-prime to pull fuel up, tolerate a gulp of air or water without missing a beat, and — in conductive form — carry static safely away on flammable grades.
Aluminium bodies with Buna-N or Viton diaphragms suit most oils, fuels and lubricants; step up to conductive, ATEX-rated builds for petrol, solvents and anything with a low flash point.
We supply these genuine and can spec the conductive, hazardous-area version where it’s needed. Tell us the fluid and whether it’s classed as flammable, and we’ll get the specification right.
Genuine Wilden AODD Diaphragm Pumps & Spare Parts15-1120-51 is a neoprene valve seat for the Wilden T15 — the surface each check ball lands on. Wear here mimics a bad check ball closely.
Genuine Wilden AODD Diaphragm Pumps & Spare Parts15-1010-51 is the primary neoprene diaphragm for Wilden’s 3″ T15 pumps — the part that actually flexes to move fluid on every stroke.
Genuine Wilden AODD Diaphragm Pumps & Spare Parts15-3520-52 is the Buna-N center block gasket on the Wilden T15. Cheap, easy to overlook, and often blamed on other parts when it leaks.