Duotight 8mm Check Valve Push Fit

Duotight 8mm (5/16) one way check valve/non-return valve.

This very handy fitting could save your regulator and is a good investment. This particular type of check valve has low opening pressure of only 1 psi. It is suitable for clean liquids such as water or for gas. The spring and internal components are made with stainless steel and quality EPDM seals.