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 Pro-Flo SHIFT air distribution parts in stock — keep the air-saving system that lowers your running cost working. Authorized dealer.
The Pro-Flo SHIFT system is what makes those pumps sip air instead of gulping it — but only while its air distribution parts are in good order. Let them wear and you quietly lose the efficiency you paid for, drifting back toward ordinary air consumption without ever noticing the day it happened.
We stock the genuine SHIFT air distribution components so you can hold on to the saving. This is emphatically a genuine-only part: the SHIFT system’s behaviour depends on precise, matched components, and generic substitutes simply don’t replicate it.
Tell us the pump model and we’ll confirm the right genuine parts to restore full air-saving performance.
Part: genuine Pro-Flo SHIFT air distribution parts, Fits: Wilden PS-series (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.