iScaper rating – 5 stars ★★★★★
My favorite sprinkler valve. This is a Rainbird 100DVFUU Union Valve. It has unions on each end of the valve that make installation and removal a snap. Most valves I encounter in a sprinkler manifold do not have these unions, and often times I have to cut the valve out of the manifold to replace it. On this valve all I have to do is loosen the unions and remove the valve. Inside the unions is an O-ring that tightens against the face of the male adapter to prevent leakage.
If you would like to see a video on how to install a Rain Bird 100DVFUU valve in a sprinkler installation, I have a YouTube video covering covering the topic.