Irritrol 2500 Irrigation Valve Diaphragm Replacement Tricks

Let's make this better! Had to replace the diaphragm of this Irritrol 2500 irrigation valve which was stuck open because of a tiny tear. There are 4 tricks to doing this successfully. 1) Don't lose the tiny O-ring 2) You don't have to remove the screws from the top of the valve 3) Use a nut driver to loosen and tighten the screws 4) Put the replacement diaphragm with centering pin and spring on to the base and lower the top straight down onto the base.