This LDR Industries 1" I.P.S. Heavy-Duty Gate Valve is constructed of heavy brass for durability. LDR offers a complete line of high-quality valves to fit a wide variety of applications and connection types. Each plumbing gate valve meets ANSI standards and ASTM standards and is 100% pressure tested. Our valve program is color coded for ease of shopping by the consumer. The LDR brass gate valves are used for on/off control with low pressure drop. The brass valve is used for main water shut off or water heaters and should be used in fully open/fully closed positions.