17 August 2022 // by adHL EC-79 certified original Hy-Lok valves and fittings. Our certifications for a large selection of safe and reliable products for your hydrogen applications. Tube Fittings Tube Fittings 70 MPa Check Valves Filter Ball Valves CGH Ball Valves CNG CGH2-OFX CGH2HC-OFM-4T6U CGH2-HR-OF-4 Share on FacebookTweetFollow us