... .gas,some causticity fluid Detailed Product Description:Connect form: ThreadSize: 1/4"∼4".Suitable medium: water, oil, steam, nitric acid, ... .Working pressure: 1000PSI PN64On-off Number: 300∼400.Thread standard: PT, NPT, BS21standard, surface is flat, allow overun the range 0 ... sells to internal, external market.Dimension: 1/4", 3/8", 1/2", 3/4", 1"1 1/2'', 2'', 2 1/2'', 3'', 4''PARAMETERS MATERIAL ...