A stop valve is a valve that closes a valve (valve) moving along the center of the valve seat. In accordance with the valve movement, the change in the valve seat opening is in direct proportion to the disc stroke. Changing the disc design allows the flow rate to be adjusted.
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Design Feature
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Forged body&cover
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Plain rod support type
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Self centering press sleeve type
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Metal to metal seal
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Full diameter or shrinkage
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Cover connect with bolt / Pressure Seal Bonnet
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The disc can be changed into an adjustable type
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Design Standard
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Design: API602 / B16.34 / BS5352
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Face to face: ASME16.10 / ISO5752
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Flange end: ASME B16.5
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Butt-welding end: ASME B16.25
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Socket welded end: ANSI B16.11
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Screw end: ANSI B1.20.1
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Test: API598
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Technical Specification
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Size:≤4”(≤DN100)
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Class: 800Lb~2500Lb(PN64,PN100,PN160,PN250)
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Connection: Double flange / Butt weld / Socket welded / Screw
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Operation: Handwheel
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Temperature: -60°C to +550°C
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Application: Oil&gas chemical
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Material Option
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Body: Carbon steel(A105,LF2,) /
Stainless steel(F304,F316,F304L,F316L) /
Duplex stainless steel(F51,F53) /
Inconel alloy(N06600,N06625,N07718)
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Disc: Carbon steel(A105,LF2,) /
Stainless steel(F304,F316,F304L,F316L) /
Duplex stainless steel(F51,F53) /
Inconel alloy(N06600,N06625,N07718)
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Stem: F6a / 17-4PH / F304 / F316 / F51 / F53 / N06600 / N06625 / N07718
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