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.

Why compressed air is the real running cost of an AODD pump, and how Pro-Flo SHIFT and correct sizing cut it. From an authorized Wilden dealer.
The open secret of air-operated pumps is that the cheap part is the pump; the expensive part is the air. Compressed air is one of the costliest utilities in a plant, and a diaphragm pump running around the clock burns through a surprising amount of it.
The good news is you can trim that bill three ways. One: don’t oversize — a pump run flat-out uses far more air per litre than one sized correctly and run at a sensible pace. Two: keep the air section healthy — a worn air valve wastes air quietly. Three: choose Pro-Flo SHIFT, whose air system eases off each stroke and meaningfully cuts consumption for the same output.
On a continuously running pump those add up to real money. Tell us your pump, its duty and its run hours, and we can point at where the savings are.
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.