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 valve balls and seats in stock — the check-valve wear parts that keep an AODD pump priming and holding flow. Fast shipping, authorized dealer.
| Material | elastomer, PTFE, stainless steel |
|---|
An air-operated pump lives or dies by its check valves. Four balls and four seats do the quiet work of keeping flow moving one way, and as they wear the pump slowly loses prime, output and efficiency until someone finally swaps them. Keeping a set on the shelf is cheap insurance against an expensive stop.
We stock genuine Wilden balls and seats in the materials that matter — tough elastomers for general and abrasive duty, PTFE and stainless for chemical service. Matching them to the fluid is what buys you a long, leak-tight life; the wrong material wears fast or won’t seal at all.
Tell us the pump model and what it’s handling and we’ll confirm the right genuine balls and seats. In stock, ready to ship worldwide.
Fits: full Wilden range (flow / head / power not applicable — spare part)
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.