Friday, March 30, 2012

Radiant Heat Pressure Testing

PEX tubing is durable and rarely leaks, but it's possible for the heavy equipment at hectic job sites to damage exposed PEX prior to the concrete pour. As a result, it’s always wise to pressure test PEX tubing before the pour takes place. This prevents a worst-case scenario of discovering a leak after the tubing is embedded.

To test the pressure, just attach a pressure gauge and Schrader valve to either the supply or return side of the manifold(s) with the proper fitting, cap off the other side, and fill the system with air. There are no leaks in the tubing if it can hold 60-75 psi for 24 hours. PexSupply.com carries Uponor’s E6122000 pressure test kit, as well as the MP182 kit for Rifeng and Mr. PEX radiant heat manifolds.