Hydraulic control valve design selection points: (1) engineering application of hydraulic control valve is passed the manufacturer inspection, all kinds of labels complete, technical information to meet the requirements of the product. (2) According to the functional requirements, select the type of valve, and then determine the valve body and sealing parts of the valve according to the pipeline transportation media, temperature, building standards and the owner's requirements. Common body materials are cast iron, copper and iron, copper, plastic and so on. Common sealing surface and lining materials are copper alloy, plastic, steel, hard alloy, rubber and so on. Valve body material should be matched with the pipe material. (3) The nominal pressure of the valve is 0.6,1.0,1.6,2.5 and 4.0MPa and other different levels, the pipeline transport medium, the working pressure should be less than the nominal valve pressure value. (4) The hydraulic control valve in the project should be provided with enough space for management, operation, installation and maintenance, and should meet the requirements of the pipeline on the valve. (5) When the pipe is flanged, a flanged hydraulic control valve should be used. When the pipe is grooved, a grooved hydraulic control valve should be used. (6) water control valve should be set in the medium flow of one-way pipeline. (7) The direction of the arrow on the main valve of the water control valve must be consistent with that of the piping system. (8) then the hydraulic control valve pipe should not be blocked, gas resistance phenomenon. The highest position in the pipe network should be set automatically save gas exhaust valve. (9) When the valve is installed horizontally, the bonnet and stem should face upward. Vertical installation, the valve cover, stem should be outward. (10) The valve should be installed before the intensity and tightness test.
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