900LB Cast Steel Gate Valve
900LB Cast Steel Gate Valve, also known as a sluice valve, is a valve which opens by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar, so gate valves are often used when a straight-line flow of fluid and minimum restriction is desired. The gate faces can be parallel, but are most commonly wedge-shaped.
Application scope: petroleum chemical industry, electric power, metallurgy, medicine, real estate, municipal engineering and other industries.
Design Standard: API 600
Pressure-temperature Ratings: ASME B16.34
Size Range: 2” to 48”
Pressure Range: Class 150 to 2500
End Connections: Flanged RF, RTJ, Butt Weld
Flanged End Dimensions: ASME B16.5 (≤24”), ASME B16.47 Series A or B (>24”)
Butt Weld End Dimensions: ASME B16.25 Face to Face
Face to Face Dimensions: ASME B16.10
Inspection and Testing: API 598
Body Materials: WCB, CF8, CF3, CF3M, CF8M, A995 4A, 5A, 6A, C95800, INCONEL 625, INCONEL 825, MONEL, WC6, WC9.
Trim Materials: 1#, 5#,8#,10#,12#,16#
Packing materials: graphite, graphite with inconel wire
NACE MR 0175 Bolted bonnet, outside screw and yoke
Rising stem with top sealing (backseat) shutting-off: by rotating the handwheel in clockwise direction
Bonnet Extension Cryogenic
Testing By Pass Valves
PTFE coated bolts & nuts
Zinc coated bolts & nuts
API600 Cast Steel Gate Valvee is a multi-turn and bidirectional valve, and the closure member is a wedge.
When the stem rising up, the wedge will left from the seat which means opening, and when the stem going down, the wedge will tightly closed to the seat facing makes it closing. When fully open, fluid flows through the valve in a straight line, resulting in minimum pressure drop across the valve. Gate valves are used as on-off valves, not suitable as capicity control applications.
Compared with ball valves, gate valves are with less cost, and more widely applications. Normally ball valves are with soft seat, so it’s not suggested to be used in high temperate applicaitons, but gate valves are with metal seat and is a good choice to be used in such high temperate situation. Also, gate valves can be used for critical applicalications when the mudium have solid particles such as mining. Gate valves are widely used for oil & gas, petrolumn, refining, chemical, mining, water treatment, power plant, LNG, etc
