Dim. 3/8 "g 1/2" Characteristics - Interchangeability: ISO 5676 - Sealing System: Special Valve With Limited Oil Outflow - Coupling: Retracting The Ring Nut And Pushing Male Coupling Into The Female - Decoupling: Moving Back The Ring Nut - Connection With Residual Pressure : Not Allowed - Disconnection With Residual Pressure: Not Allowed - Threads Available: Bsp (dn 3852) Metric (din 3852). - Construction Material: High Strength Carbon Steel. - Surface Treatment: Galvanizing Cr Iii • Springs: Steel C72 - Sphere: Steel 100 C6 - Seals: Nbr (nitrile)