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Proper installation of the gate valve precautions

Proper installation of the gate valve precautions

Gate valve is a common valve, according to the classification can be divided into parallel gate valve, wedge gate valve, lift gate valve, rotary rod gate valve, quick opening and closing gate valve, shrink gate valve, flat gate valve Wait.

installation of the gate valve

    Correct installation of the gate valve Note five need to know:
    1, hand wheel, handle and transmission are not allowed to make lifting, and is strictly prohibited collision.
    2, double gate valve should be installed vertically (that is, the stem is in the vertical position, hand wheel at the top).
    3, with a bypass valve valve should be opened before opening the bypass valve (to balance the inlet and outlet pressure and reduce the opening force).
    4, with the transmission mechanism of the gate valve, according to the provisions of the product installation instructions.
    5, if the gate valve is often used, at least once a month lubrication.
    Installation process gate valve Note:
    1), installation location, height, import and export direction must meet the design requirements, the connection should be firmly close.
    2), installed in the insulation on the various types of manual valves, handles are not down.
    3), the valve must be installed before the appearance of inspection, the valve nameplate should be consistent with the existing national standard "common valve mark" GB 12220 requirements. For working pressure greater than 1.0 MPa and in the trunk pipe to play a role in the disconnection of the valve, the installation should be carried out before the strength and rigidity of the test, qualified after quasi-use. Strength test, the test pressure of 1.5 times the nominal pressure, the duration of not less than 5min, the valve shell, the filler should be no leakage for the qualified. Tightness test, the test pressure is 1.1 times the nominal pressure; test pressure in the test duration should meet the GB 50243 standard requirements, to seal the sealing surface without qualified.
    4), hand wheel, handle and transmission are not allowed to make lifting, is strictly prohibited collision.
    5), with the transmission mechanism of the gate valve, according to the provisions of the product installation instructions.
    In order to ensure the normal use of the valve, and the longer life, please carefully install the above valve instructions to operate.

    Gate valve manufacturers recommend

installation of the gate valve

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