●Description: A gate valve, also known as a sluice valve, is a
valve that 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 form a wedge shape or they can be parallel. Gate valves are primarily used
to permit or prevent the flow of liquids, but typical gate valves shouldn't be
used for regulating flow, unless they are specifically designed for that
purpose. Because of their ability to cut through liquids, gate valves are often
used in the petroleum industry. Gate valves are characteristic as having either
a rising or a non rising stem. Rising stems provide a visual indication of
valve position because the stem is attached to the gate such that the gate and
stem rise and lower together as the valve is operated. Non rising stem valves
may have a pointer threaded onto the upper end of the stem to indicate valve
position, since the gate travels up or down the stem on the threads without
raising or lowering the stem. Non rising stems are used underground or where
vertical space is limited.
●Standards:
Design: BS5150, GB.
Face to Face: DIN3202-F4/F5, GB12221.
Flange: BS EN 1092-2.
●Materials: Ductile iron, cast iron
●Nominal sizes: DN80—1600mm
●Pressure: PN10/16/25
●Corrosion protection: Inside and outside FBE.
●Suitable medium: Water, oil, steam.
●Package: wooden case with plastic layer, wooden pallets with
plastic layer, steel crates.
