Metal Gate Valves

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Gate Valves are of flexible wedge; outside screwed and yoke type, bolted-bonnet construction.
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The gate valve body has a straight through port without recesses except at the seat area. This ensures minimum turbulence, erosion and resistance to flow.
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Long integral guide ribs in the body match with guide slots in the wedge for accurate alignment and guidance. Bonnet castings are of one-piece design, where the yoke is integral with the bonnet for gate valves of sizes up to 12” (300mm). This ensures accurate alignment of stem and a smooth operation.
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The body-bonnet joint for Class 150 gate valves is oval in shape, while for Class 300, this joint is circular in shape.
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Gate valves of Class 150 rating have a flat-face joint with a graphite gasket having metallic inserts.