Cast Steel Gear Worm Gate Valve
Gate valve is to ensure a straight line flow of a liquid when valve is fully open. The gate valve is not apply to regulate flow. Gate Valve is not necessary to open frequently, and it maintain the valve on position of wide open or closed.
1) Design and manufacture: BS1873, ANSI B16.34
2) Test and inspection: API598
3) Face to face dimensions: ANSI B16.10
4) Flanged end: ANSI B16.5
5) Butt-welding end: ANSI B16.25
6) Other standards (DIN, BS, JIS) is also available upon request.
1) In order to prevent abnormal pressure in the cavity, relief holes are equipped on inlet side.
2) The bonnet top length are determined according to the operating temperature of the valve, to ensure reliable packing sealing.
3) Packing, gasket and other parts material are decided according to the working temperature.
4) Strictly control the chemical composition of materials and low temperature impact toughness and other mechanical properties.
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