Gate valves are selected for full-bore isolation service in general process, steam distribution, and industrial pipeline systems where minimal pressure drop and reliable long-term shut-off are required. The wedge disc retracts completely outside the flow path in the open position, making cast steel gate valves the standard choice for process plant isolation, pump suction and discharge lines, steam mains, and cooling water systems across oil & gas, petrochemical, power generation, and general industrial applications. Gate valves are not suitable for throttling or flow regulation service.

Cast steel body construction (WCB, WC6, WC9) at PN16–PN40 covers the majority of general process and utility service requirements, with bolted bonnet construction standard for Class 150–300 allowing internal maintenance without pipeline removal. Extended stem configurations are selected where the valve body is installed below grade, in valve pits, or in congested plant piping arrangements — raising the operator to a convenient working height while maintaining full visual position indication via the rising stem.

Body material selection follows service temperature and fluid requirements — carbon steel (WCB) for standard service up to 425°C, alloy steel (WC6, WC9) for high-temperature steam and process applications up to 600°C, and stainless steel (CF8, CF8M) for corrosive media. Handwheel operation is standard for smaller sizes, with gear operators selected for larger bore valves. Design standards API 600 and ASME B16.34 govern pressure-temperature ratings and material requirements across all service conditions.