1. The installation characteristics of forged steel globe valves are briefly introduced. 1. The installation position, height, import and export direction must meet the design requirements, and the connection should be firm and tight.
2. All kinds of manual valves installed on insulation pipelines shall not have downward handles.
3. The appearance of forged steel gate valve must be inspected before installation. The sound of the valve should conform to the current national standard "General Valve Mark" GB 12220. For the working pressure uuuuuuuuuuuu
Brief Introduction to the Installation Characteristics of Forged Steel Gate Valve
1. Installation location, height, import and export direction must meet the design requirements, and the connection should be firm and tight.
2. All kinds of manual valves installed on insulation pipelines shall not have downward handles.
3. The appearance of forged steel gate valve must be checked before installation. The nameplate of the valve should conform to the current national standard GB 12220. For valves with working pressure greater than 1.0 MPa and cutting off effect on main pipe, strength and tightness test should be carried out before installation, and the valves can be used only after they are qualified. In the strength test, the test pressure is 1.5 times of the nominal pressure, and the duration is not less than 5 minutes. The valve shell and packing should be qualified without leakage. The test pressure is 1.1 times of the nominal pressure in the tightness test, and the test pressure should meet the requirements of GB 50243 standard for the duration of the test, with no leakage on the sealing surface of the gate as the qualification.
What is gate valve
The gate valve's opening and closing part is the gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and closed, and can not be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valves form wedges, and the wedge angle varies with the valve parameters. The driving modes of gate valves are classified as manual gate valves, pneumatic gate valves and electric gate valves. The materials of gate valves are cast iron gate valves, ductile iron gate valves, stainless steel gate valves, forged steel gate valves, etc.
