3/4" Expansion PEX Tankless Water Heater Isolation Valve Kit – With Pressure Relief, Fits Rheem, Rinnai, Navien (No Crimp PEX)

About This Product

So this isolation valve kit from Libra Supply is a solid choice if you're hooking up a tankless water heater.

It's made with quality materials and fits any unit with a 3/4-inch MPT outlet – so brands like Rheem, Rinnai, or Navien are good to go.
The design is compact and installs easily, which makes life simpler.

Now, here's the big thing – this is for Expansion PEX A, not the crimp-style PEX B.
The connector is slightly larger than 3/4 inch, so make sure you're using the right pipe.
It's made from low-lead clean brass, so it's safe for drinking water too.

Comes with a pressure relief valve included, which is a nice bonus.

It's 100% leak-tested and meets NSF/ANSI 61 standards.

Works for both hot and cold water lines, with a female thread to Expansion PEX A connection.
Straightforward, reliable, and no surprises – just what you need for a hassle-free install.