Forget-Welded Wedge Gate Valves With Rising Stem
Design features
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Design Features
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Benefits
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Carbon or alloy steel valve body and gate.
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Resistance to chemical and temperature effects of line medium.
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Ribbed body.
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Greater integrity under line medium pressure.
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Smaller dimensions and weight (as compared with cast gate valves).
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Usage in narrow spaces with minimum number of supports for the pipeline.
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Full bore gate body design.
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Free medium flow.
Clear pass for maintenance and diagnostic equipment.
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Corrosion-resistant over welding of the wedge.
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Increased reliability and service life.
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Pressure relief plug in the cover.
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Pressure release.
Additional tightness of the gate (by boosting pressure inside).
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Rolling bearings in the yoke.
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Lower actuator torque.
Easy valve operation.
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Flexible gate.
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High level of tightness of gate valves.
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Usage of thermo expanded graphite for sealing gland.
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Less stem friction wear-out.
Extended service life of the element.
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Part name
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Material
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DIN
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ASTM
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Body
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RSt37-2; C22
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A283/C; A556, AISI 1020
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Wedge
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RSt37-2; C22
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A283/C; A556, AISI 1020
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Spindle
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X20Cr13
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A473, A580, AISI 420
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Gasket
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Paronite
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Cover
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RSt37-2; C22
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A283/C; A556, AISI 1020
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Nut
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С 35
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A915, AISI 1035
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Pin
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С 35
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A915, AISI 1035
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Gland
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Thermal Expanded Graphite
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Bushing
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Bronze
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Flange
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RSt 37-2
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A283/C
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Thread bushing
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Bronze
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Hand wheel
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С 22
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A556, AISI 1020
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Body ring
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X6CrNiTi 18.10, 1.4541
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A167, AISI 321
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Wedge overlay
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Corrosion-resistant over welding
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Application
Used as stop valves for pipelines transporting:
- water, vapor and other nonflammable, non-explosive and non-toxic media neutral to the material of main valve parts;
- air and other nonflammable, non-explosive and non-toxic gaseous media neutral to the material of main valve parts;
- H2S-free natural gas other nonflammable, non-explosive and non-toxic gaseous media neutral to the material of main valve parts.
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