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                    • Butterfly
                    • Butterfly Check Valve

                      Product model: H77X
                      Nominal Path: NPS 2"~NPS 60" DN50~DN1500
                      Pressure range: CL150-CL600 PN10-PN100
                      Working temperature: - 29 ~425 ~
                      Main material: carbon steel, stainless steel, alloy steel
                      Scope of application: It is suitable for piping of tap water, food, pharmaceutical, electric power, petroleum, liquefied gas, steam, etc.

                      Product overview

                      The butterfly check valve is used for pure pipeline and industrial, environmental protection, water treatment, water supply and drainage pipelines of high-rise buildings to prevent reverse flow of media. The check valve adopts a pair of clamps, the butterfly plate is two semicircles, and the spring is forced to reset. The sealing surface can be surfacing wear-resistant material or lining rubber for the body. It has a wide range of applications and reliable sealing.

                      Design code

                      Design criteria: API6D, JB/T8937, API594

                      Structure Length: API 594, JB/T8937

                      Connection standards: ASME B16.5, GB/T 9113, JB/T 79, HG/T 20592

                      Pressure test: API 598, GB/T 13927, JB/T 9092

                      Pressure-temperature grade: ASME B16.34, GB/T12224

                      Product characteristics

                      1. The product has short structure length, small volume and light weight.

                      2. Sealing valves can be made of soft or hard sealing materials according to different working conditions, with good sealing performance.

                      3. Horizontal or vertical pipes can be used for easy installation.

                      4. Disc closure is fast and water hammer pressure is low.

                      5. The material quality of the parts and the form and size of the end face of the valve can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.