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API 6D,API 594,BS 1868,ASME B16.34 SWING CHECK VALVE STAINLESS STEEL CF3 CF3 CF8 CF8M BW RF FLANGE
Technical parameters and characteristics:
Product type | Switch valve |
Product description | Swing check valve |
Model | H44H-swing check valve |
Nominal diameter | 2”~50”(50mm~1250mm) |
Operating temperature | -196℃~593℃(the range of service temperature may vary for different materials) |
Operating pressure | 150-2500 CLASS |
Material | Main material: A216 WCB,WCC;A217 WC6,WC9,C5,C12,C12A,CA15;A351 CF8,CF8M,CF3,CF3M,CF8C,CN3MN,CK3MCUN,CN7M;A352 LCB,LCC;A494 CW-6MC,CU5MCuC,M35-1;A995 4A(CD3MN),5A(CE3MN),6A(CD3MWCuN);ASME B 148 C95800,C95500, etc. |
Design standard | API 6D,API 594,BS 1868,ASME B16.34,GB 12236,GB 12224 |
Structural length | ASME B16.10 |
Connecting end | ASME B16.5,ASME B16.25,GB 9113,GB 12224 |
Test standard | API 598,ISO 5208,JB/T9092,GB/T13927 |
Operation method | The valve clack can be automatically opened and closed with the medium force, movement weight can be increased to facilitate fast closing of valve clack, hydraulic cylinder can be increased to facilitate slow closing of valve clack to prevent vibration of pipeline, and pigging can be performed through manual opening and locking the valve clack at the opening position. |
Application fields | For application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc. |
Other remarks 1 | The sealing faces of valve seat and valve clack are build-up welded with hard alloy to improve the erosion resistance and extend the service life of valve. |
Other remarks 2 | SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing. |
Other remarks 3 | Suitable for medium backflow prevention in pipeline or device |
Other remarks 4 | Large check valves are designed with hydraulic damping cylinder to prevent the valve clack from bumping the valve seat, damaging the valve or causing pipeline vibration due to fast closing. |
Other remarks 5 | In case of pigging requirement, API 6D swing check valve can be manually operated to fix the opening position of valve clack, so as to achieve the pigging objective. |
swing check valve is designed and manufactured according to American National Standards (ANSI B16.34) and American Petroleum Institute (API16D). Swing disc with straight channel which can be installed in both horizontal and vertical pipelines. The inner hinge pin can avoid external leakage. Bolted bonnet design. When pressure is higher than Class 600Lb, pressure self-sealing structure is adopted, which can reduce the valve weight and have reliable seal.
Type | Design & Manufacture | Face to Face | Flange Dimension | Pressure & Temperature | Test & Examination |
Swing Check Valve Lift Check Valve | ANSI B16.34 BS1868 | ANSI B16.10 | ANSI B16.5a | ANSI B16.34 | API 598 |
Pressure Test
Nominal Pressure | Shell Test | Water Seal Test | Air Seal Test | |||
MPa | Lbf/in2 | MPa | Lbf/in2 | MPa | Lbf/in2 | |
150 | 3.1 | 450 | 2.2 | 315 | 0.5~0.7 | 60~100 |
300 | 7.8 | 1125 | 5.6 | 815 | ||
600 | 15.3 | 2225 | 11.2 | 1630 | ||
900 | 23.1 | 3350 | 16.8 | 2440 |
Component Materials
Body | ASTM A216WCB | ASTMA351 CF8 | |||||||||
Disc & Yoke | WCB | CF8 | CF8M | Monel | |||||||
Hinge Pin | F6a | F304 | F316 | Monel | F304 | ||||||
Disc Surface | 13Cr | 13Cr | STL | 304 | STL | 316 | STL | Monel | 304 | 304 | STL |
Seat Surface | 13Cr | STL | STL | 304 | STL | 316 | STL | Monel | 304 | STL | STL |
Body | ASTM A351 CF3 | ADTM A351 CF8M | ASTM A351 CF8 | ||||||||
Disc & Yoke | |||||||||||
Hinge Pin | F304L | F316L | F316 | ||||||||
Disc Surface | 304L | 304L | STL | 316 | 316 | STL | 316L | 316L | STL | ||
Seat Surface | 304L | STL | STL | 316 | STL | STL | 316L | STL | STL |
Main Dimensions
150Lb
Sizes | inch | 2" | 2-1/2" | 3" | 4" | 5" | 6" | 8" | 10" | 12" | 14" | 16" | 18" | 20" | 24" |
DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | |
L | mm | 203 | 216 | 241 | 292 | 330 | 356 | 495 | 622 | 699 | 787 | 914 | 978 | 978 | 1275 |
H | mm | 142 | 166 | 178 | 236 | 252 | 266 | 314 | 368 | 429 | 455 | 410 | 560 | 600 | 880 |