1: description of cast steel electric gate valve:

cast steel electric gate valve is all cast into the casting processing of gate valves with metal steel materials generally referred to as the cast steel electric gate valve. Corresponding also cast iron with cast steel electric valves electric gate valves, high pressure electric gate valves, electric gate valves at low temperature. It is the opening and closing of a ram, ram movement direction perpendicular to the direction of flow, gate valve can only be fully open and close, not to adjust and throttling. Sealing face has two gate, two of the most commonly used mode gate valve sealing surface form a wedge, the wedge Angle vary with the valve parameters, usually in the form of 50, when the medium temperature is not high for 2 & deg; 52′ 。 Wedge gate valve of the damper can be made into a whole body, is called a rigid disc; Can also make it generates trace of deformation of ram, in order to improve the manufacturability, make up for the sealing surface Angle in the process of our processing deviation, this damper is called elastic disc. Cast steel gate valves: gate valves according to the material is carbon steel, low alloy steel, stainless steel gate valve gate valve ( High temperature resistance of chrome molybdenum steel belongs to this category) , low temperature steel gate valves, etc.

2: : cast steel electric gate classification and casting brand:

under all kinds of cast steel gate valves and various specific steel grades are commonly used as follows:

1, carbon steel gate valve casting brand has: WCA, WCB, WCC, LCB, etc; Suitable temperature - 46 degrees to 425 degrees.

2, stainless steel Industrial Valves casting brand: 301 stainless steel, stainless steel (CF8 Corresponding to 304 stainless steel forging) , CF8M stainless steel ( Corresponding to 316 stainless steel forging) And so on; Suitable temperature - 198 ~ 816 degrees.

3 high temperature alloy steel, low alloy steel and high strength low alloy steel, high temperature alloy steel which is often said that the chrome molybdenum steel.

4, chrome molybdenum steel gate valve casting brand: ZG1Cr5Mo, ZG15Cr1MoV, ZG20CrMoV, WC6, WC9, C12A, etc. Suitable temperature 550 ~ 750 degrees.

5, each of the specific brand of material which is temperature varies, depending on the actual working condition.

3: cast steel electric gate valve installation:

1, before installation must check valve cavity and seal face and other parts, there is no dirt or sand clinging to the body;

2, each bolt connection parts, require uniform tight;

3, check the packing pressure parts requirements, both to ensure that the packing sealing, also to ensure that the gate is open and flexible;

4, users before installation of valve, must check valve figure number and connected to the flow direction of medium size and note, ensure consistency with the valve requirements;

5, user when installing the valve, the valve must be set aside driven necessary space;

6, wiring shall be according to the circuit diagram of the driving device;

7, the valve must be regularly maintenance, shall not be arbitrarily collision and extrusion, in order to avoid affect the sealing.

4: cast steel electric gate valve installation note:

1, the installation location, altitude, import and export direction must comply with the design requirements, the connection should be firmly connected.

2, all kinds of manual valves installed on the thermal insulation pipe, handle shall not down.

3, a visual inspection must be conducted before installation of valve, the valve nameplate should be consistent with existing national standards 'universal signal valve' GB 12220. For the working pressure is greater than 1. 0 MPa and the valve with the function of cutting off on ZhuGanGuan, strength and strict performance test should be done before the installation, qualified rear must use. Strength test, the test pressure for the nominal pressure of 1. 5 times, duration of not less than 5 min, shell and packing shall be no leakage of valve shall be qualified. Leak test, the test pressure for the nominal pressure of 1. 1 times; The duration of the test pressure in the test should comply with the standard of GB 50243 requirements, with no leakage for qualified for valve sealing surface.

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Shenzhen Mech Valve Trading Co., Ltd. has had manufacturing experience for over cast iron gate valve years. She currently runs a website where they sell . You can visit her site at Mech Valve.
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