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                    Return
                    • Electric
                    • Electric Flange Gate Valve

                      Product model: Z41H
                      Nominal Path: NPS 1/2"~NPS 2" DN15~DN50
                      Pressure range: CL150-CL2500 PN16-PN160
                      Working Temperature: -29 ~+560
                      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.

                      Design code

                      Design criteria: API 602, ASME B16.34, JB/T 7746

                      Structural Length: ASME B16.1, GB/T12221, JB/T96

                      Connection standards: ASME B16.5, ASME B16.47, ASME B16.25, GB/T9113

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

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


                      Product characteristics

                      1. The gate has two sealing surfaces. The wedge shape and wedge angle of the sealing surface vary with the valve parameters, usually 5 degrees.

                      2. The sealing principle of wedge gate valve is the close combination of two sealing surfaces on wedge gate plate and two sealing surfaces on valve body when wedged in, so as to achieve sealing performance.

                      3. Wedge gate valves can be divided into open-rod gate valves (lifting-rod gate valves) and hidden-rod gate valves (rotary-rod gate valves) according to the different opening and closing modes of the gate driven by the stem.

                      4. Wedge gate valves can be divided into elastic gate valves and rigid gate valves according to their different structure forms.

                      5. The body is cast-moulded, the body and cover are bolted, the middle flange is sealed with winding gaskets, and the metal ring can be used when customers have special requirements.

                      6. The channel is smooth and the flow coefficient is small. The sealing surface is less eroded and eroded by the medium.

                      7. The sealing surface is made of alloy steel or cemented carbide with good wear resistance and abrasion resistance.

                      8. Using flexible graphite filler, the seal is reliable and the operation is light and flexible.

                      9. The flow direction of the medium is unrestricted, without disturbance or pressure reduction.

                      10. Simple in shape, short in length, good in manufacturing technology and wide in application.


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