The Isolator E-X-P

This set of tankless water heater service valves improves TWH installations by eliminating leak paths, saving space, improving consistency, and making future service simple and convenient.

[@stoneledgetinyhouse]

I fully agree! We have one installed on our TWH in our Tiny House & it installed perfectly in the tight space of the "mechanical room" and is easy to work on (had a leak as I did not want to over tighten & crush the rubber washer originally -hot side-) 😀👍 Great product well built