API600 Cast Steel Gate Valve
Gate valves are typically used when a straight-line flow of fluid and minimum flow restriction are needed. They are well suited for high pressure and high temperatures, and can be used for a wide variety of fluid. Because the gate valve is symmetrical, either end can be the inlet, allowing flow to enter through either direction of the valve, otherwise known as bidirectional.
There are many designs for the Gate valve, including rising and non-rising stem, knife, slab, and expanding.
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
Optional
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
Product Introduction
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
