Gate valves are selected for full-bore isolation service in water supply, water treatment, and municipal pipeline systems where unrestricted flow, minimal pressure drop, and reliable long-term shut-off are required. The full-bore design places the wedge disc completely outside the flow path in the open position, providing unobstructed flow suitable for water mains, pump station isolation, reservoir inlet and outlet control, and distribution network sectioning valves. Gate valves are not suitable for throttling or flow regulation service.

Cast steel and ductile iron body construction at PN10–PN25 is standard for municipal water service, providing a durable and cost-effective solution for large-bore water pipeline applications. Non-rising stem designs are preferred for underground installations and valve chambers where stem travel space is limited, while rising stem designs are used in above-ground pump stations and treatment plant pipework where visual position indication is required. Rubber-lined wedge discs are standard for water service, providing bubble-tight shut-off at low operating torque and resistance to corrosion from treated and untreated water.

Blue epoxy coating is the standard surface treatment for water pipeline service, providing corrosion protection and compliance with potable water contact material requirements. Handwheel operation is standard for smaller sizes, with gear operators selected for larger bore valves where manual torque becomes impractical. Design standards BS 5163, EN 1171, and AWWA C500 govern pressure-temperature ratings, material requirements, and testing criteria for water service gate valves.