Installation points of forged steel globe valve
Release time: 2021-10-14 16:38 Author: wzxinnet Browse: 1215

Forged steel globe valve refers to a valve whose closing part (disc) moves along the center line of the valve seat. During the opening and closing process of the forged steel globe valve, the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant. Forged steel globe valves are characterized by low fluid resistance, wide applicable pressure and temperature ranges, unlimited medium flow direction, and good sealing performance.

The installation points of the forged steel globe valve are as follows:

1. The installation position, height, and direction of import and export must meet the design requirements, and the connection should be firm and tight.

2. The handles of all kinds of manual valves installed on the thermal insulation pipeline must not be downward.

3. The valve must be visually inspected before installation. The nameplate of the valve should comply with the current national standard "General Valve Marking" GB 12220. For valves with a working pressure greater than 1.0 MPa and a cut-off function on the main pipe, the strength and tightness performance test shall be carried out before installation, and the valve shall be used only after it is qualified. During the strength test, the test pressure is 1.5 times the nominal pressure and the duration is not less than 5min. The valve housing and packing should be qualified without leakage. During the tightness test, the test pressure is 1.1 times the nominal pressure; the test pressure should meet the requirements of the GB 50243 standard during the test duration, and no leakage on the valve flap sealing surface is qualified.

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