API Swing check valve
Working Pressure150LB～600LB,
Working Pressure150LB～600LB,
Applicable temperature: -29～550℃ Oil, chemical industry, power station,and so on.
Medium:Water,Oil,Gas,etc.
API Swing check valve Structure and distinguishing feature
1. The selection is elegant, tallies domestic, outside is related the standard, the material comprehensive quality is high.
1. The selection is elegant, tallies domestic, outside is related the standard, the material comprehensive quality is high.
2 Seals the vice-pair advanced reasonable, the valve petal, the valve seat packing surface use the iron-base alloy or the department too vertical (Satellite) cobalt base hard alloy built-up welding surface become, wear-resisting, thermos table, anti-corrosive, the anti-abrasion performance is good, the service life is long
3 standard design: According to ANSI B16.34.
4 May use each kind of tubing flange standard and the flange seal pattern, satisfies each kind of project to need and the user request.
3 API Swing check valve
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Type
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Check valve
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Design Standard
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APl6D．JlS B2074-2084
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Face to face
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ANSIB16.10,JISB2002
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Flange
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ANSI B16.5, JISB2212-2214
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Ends
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ANSlB16.25
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Checking
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APl6 / APl598,JlSB2003
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4.API Check valve for testing standard
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Class
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Shell Test (Map)
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Seat Test (MPa)
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High-Pressure Liquid Sealing
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Low-Pressure Hermetic Sealing
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||
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150Lb．PN2.0MPa
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2.94
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2.16
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0.6
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300Lb．PN5．OMPa
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7.67
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5.62
|
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600Lb．PNlO.OMPa
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15.3
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11.23
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|
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JISlOK
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2.1
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1.6
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JIS20K
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5.1
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3.8
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5. API check valve of Material List
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Parts
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Material
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Body
Cap Disc Stem |
ASTM A216
WCB |
ASTM A351
CFB |
ASTM A351
CF8M |
ASTM A351
CF3 |
ASTM A351
CF3M |
|||
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Hinge pin
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1Crl3
|
OCrl8Ni9
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OCrl7Nil2M02
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OOCrl9Nil0
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OOCrl7Nil4M02
|
|||
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F6a
|
304
|
316
|
304L
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316L
|
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Disc
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Sealing face
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13Cr
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13Cr
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STL
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STL
STLR STL |
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Seat
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13Cr
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STL
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STL
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Disc, Nut
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1Crl3
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0Crl8Ni9
|
OCrl7Nil2M02
|
00Crl9NilO
|
OOCrl7Ni4M02
|
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410
|
304
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316
|
304L
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316L
|
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Check pin
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OCCr8Ni9
|
0Crl7Nil2M02
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00Crl9NilO
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00Crl7Nil4M02
|
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304
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316
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304L
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316L
|
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Seat
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Expanded graphite (core plate: WCB or SS)Stainless steel, graphite wound gasket
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Bolt on cover flange
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350CrM0
ASTM A193 B7 |
OCr18Ni9 ASTMA193 B8
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Bolt on cover flange
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45
ASTM A1 94 2H |
OCr18Ni9 ASTM A194 8
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Medium
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Applicable Medium
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Water,Oil,Gas
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natal
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acetic acid
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strong oxidizing property
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Car amide
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Applicable Temperature (℃)
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-29～425
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-40～200
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