Connect form: flange DN: 1/2~ 4 Suitable medium: water, oil, steam Suitable temperature: -40 ~ + 150 Working pressure: 1.6P ~ 2.4 ~ 6.4. On-off Number: 300~ 400. Main material: 304 and 316. Design and manufacture adoption: ISO, API, GB, BS, we are strict with the security and quality ,it was accepted by clients and sells to internal, external market.