Replacement diaphragm for Orbit 100-series automatic 3/4-inch. (57100) and 1-inch. (57101) internal bleed valves, except Anti-Siphon.
Connects sprinkler timers to valves
Reliable and long-lasting
High-quality molded construction
For outdoor use with cold water only
Dipphragm Replacement kit for the 100-series of inline valves sold by Orbit before 2018