The mainly copper valve types: Special stop valves for oxygen pipelines,Website:http://www.eamachine.com, flanged gate valves, flanged stop valves .Major features of the stop valves: 1. Special designment, especial for oxygen pipelines.2. Fire retardant, the mainly components are alloy copper.3. Secure and reliable. 4. Flexible opening and closing.Nominal pressure: 1.6, 2.5, 4.0 MPa.Suitable mediums: Oxygen, nitrogen, air and so on.