F304 Flanged Ends Forged Steel Check Valve Conform to ASME B16.34, and MSS-SP-118.
They are tested according to API 598, and marked as per MSS SP-25.
1. Construction is as follows:
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- Full Port or Standard Port
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- Piston Check
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- Ball Check
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- Swing Check
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- Bolted Bonnet with spiral-would gasket, threaded and seal welded bonnet and threaded and pressure seal bonnet
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- Spring available on request
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- Socket Weld Ends to ASME B16.11
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- Butt Weld Ends to ASME B16.25
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- Screwed Ends to ANSI/ASME B1.20.1
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- Flanged Ends to ASME B16.5
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2. Main Part & Materials
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Part Names
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Part Materials
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Body
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A105
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LF2
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F22
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F304
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F316
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F304L
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F316L
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B62
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Bonnet
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A105
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LF2
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F22
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F304
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F316
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F304L
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F316L
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B62
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Disc/Ball/Wedge
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A105
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SS304
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F22
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F304
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F316
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F304L
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F316L
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B62
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Stem
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A105
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F304
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F6a
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F304
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F316
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F304L
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F316L
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B62
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Seat/Seat Ring
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13%Cr
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SS304
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13%Cr
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F304
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F316
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F304L
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F316L
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B62
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Packing
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Graphite/PTFE
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Gasket
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SS304+Graphite/SS304+Graphite
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Bolts/Nuts
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B7/2H
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L7/4
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B16/4
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B8/8
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B8M/8M
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B8/8
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B8M/8M
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B8M/8M
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Suitable Medium
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W.O.G etc.
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HNO3, CH3OOH etc.
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Sea Water etc.
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Suitable Temperature
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-29~425 °C
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-46~340 °C
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-46~340 °C
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-196~427 °C
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-196~427 °C
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-196~427 °C
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-196~427 °C
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-29~220 °C
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3. Normal Pressure Rating
PN10~PN420, CLASS150~2500
4. Normal Size Range
DN15~DN50, 1/2"~2"