Duotight Food Grade Plastic (Push-In) Gas Check Valve - 5/16" (8mm)
Protect your regulator from any back-flow with this Push-In Gas Check Valve. This Food-Grade Plastic check valve from Duotight has dual EPDM O-rings to secure your 5/16" OD (8mm) EVABarrier & Polyethylene Tubing and prevent your gas from leaking.
The red push-in end is for the gas output, and this check valve can withstand 100 PSI.
As with all Duotight fittings, you should make sure that you cut your tubing straight so that the dual EPSM O-rings can secure the tubing's entire diameter.