Duotight - 8mm x 8mm one-way check valve

Duotight - 8mm x 8mm one-way check valve.

duotight - 8mm (5/16") x 8mm (5/16") internal one-way check valve (gas)

This very handy piece can save your co2 regulator and is a good investment. This particular type of check valve has a low opening pressure of only 1psi. This check valve is suitable for clean liquids such as water or gas. The spring and internal components are made of stainless steel and quality EPDM seals.