Two Different Designs Included: Pack contains 2 diaphragms for different Orbit valve series - you use only one based on your model; this covers both older and newer valves
Check Your Valve Model First: Diaphragm #1 fits 57223, 57224, 57321, 57222, 57221; Diaphragm #2 fits 57623, 57624, 57625, 57020 - designs vary between series
Fixes Common Valve Issues: Stops leaks from diaphragm area and valves that won't shut off properly - saves money vs replacing entire valve assembly
Easy DIY Installation: Simple replacement takes minutes - turn off water, remove lid, swap correct diaphragm design, reassemble and test system
Durable Outdoor Construction: Long-lasting material withstands irrigation system
