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A 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.
A gate valve mainly contain body, bonnet, wedge, seat, stem. We will take the below gate valve as an example, to make a brief introduction:
DIN 3352 F5 METAL SEATED RISING STEM
AVAILABLE MEDIUM: WATER
WORKING TEMPERATURE: ≤150℃
FACE TO FACE: DIN 3202 F5
FLANGE DIMENSIONS: DIN2501
OUTSIDE-SCREW STEM
MATERIALS:
BODY & BONNET: CAST IRON
SEAT: CAST BRASS
WEDGE DISC: CAST IRON + BRASS
STEM: STAINLESS STEEL
PACKING: GRAPHITE
STEM NUT: CAST BRASS
GASKET: GRAPHITE