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Cast Steel Check Valve

Cast steel swing or piston check valves are full port to API 6D or conventional port to BS 1868, with a standard bolted bonnet or pressure seal for high pressure and large sizes.

Body and cover: Precision machined castings.

Body and cover joint: Accurately machined, fully-enclosed gasket.

Disc: Robust one-piece construction to withstand the severe shock of the check valve. The disc is hardfaced with 13Cr, CoCr alloy, SS 316, or Monel, ground and lapped to a mirror finish. Solid CA 15 (13Cr) discs may be used in sizes NPS 2-6 (DN 50-150). A SS  316 disc with a CoCr alloy facing is also available.

Disc assembly: The non-rotating disc is fastened securely to the disc hanger with a lock nut and cotter pin. The disc hanger is supported by a sturdy disc carrier hinge pin of excellent bearing qualities. All parts are accessible from the top for easy service.

Bore: conventional bore designed according to BS 1868 or full bore designed according to API 6D.

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cast steel swing check valve
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Design Features:

Swing check disc

Bolted bonnet

All seat rings are seal welded as standard.

Options:

Piston check disc

With counterweight or damper/Lever & Weight

Bypass

Size:

2" - 48"

Pressure Rating:

Class 150 - Class 2500

Body Material:

Carbon steel, low temperature carbon steel, alloy steel, stainless steel, Al bronze

Trim Material:

All in API 600 trim chart, such as no. 1, 10, 5, 8, 12, etc.

Standard Specifications

Design BS 1868/API 6D/ASME B16.34 Face to face ANSI B16.10
End flange ASME B16.5/16.47 BW Ends ASME B16.25
Test API 598 Material Nace Mr-0175

Cast Steel Swing Check Valve Drawing 

Cast Steel Swing Check Valve Class 150 Drawing 

Standard Material

Item Part Name Material
1 Body A216 WCB
2 Seat Ring A105+STL
3  Disc WCB+13Cr
4 Disc Washer A276 410
5 Disc Nut Pin Stainless Steel
6 Disc Nut Stainless Steel
7 Hinge Pin A216 WCB
8 Hinge Pin A182 F6a
9 Bearing Bracket A216 WCB
10 Spring Washer Carbon Steel
11 Hex Bolt Carbon Steel
12 Gasket SS304+Graphite
13 Cover Bolt A193 B7
14 Nut A194 2H
15 Cover A216 WCB
16 Eye Bolt Carbon Steel
17 Plug Carbon Steel

 

Dimension & Weight

Class 150 Swing Check Valve Dimension & Weight

Size Inch 2" 3" 4" 6" 8" 10" 12" 14" 16" 18" 20" 24"
DN 50 80 100 150 200 250 300 350 400 450 500 600
L/L1 267 318 356 445 533 622 711 838 864 978 1016 1346
L2 283 333 371 460 549 638 727 854 879 994 1035 1368
H 175 198 235 282 335 385 460 520 554 600 670 750
Weight 21 39 69 125 210 307 450 680 840 1025 1320 1960

Note: 1- Tthe weight is for flanged RF ends check valve, weight in Kg.

           2-The dimensions are in mm.

Class 300 Swing Check Valve Dimension & Weight

Size Inch 2" 3" 4" 6" 8" 10" 12" 14" 16" 18" 20" 24"
DN 50 80 100 150 200 250 300 350 400 450 500 600
L/L1 267 318 356 445 533 622 711 838 864 978 1016 1346
L2 283 333 371 460 549 638 727 854 879 994 1035 1368
H 175 198 235 282 335 385 460 520 554 600 670 750
Weight 21 39 69 125 210 307 450 680 840 1025 1320 1960

Note: 1- Tthe weight is for flanged RF ends check valve, weight in Kg.

           2-The dimensions are in mm.

Class 600 Swing Check Valve Dimension & Weight

Size Inch 2" 3" 4" 6" 8" 10" 12" 14" 16" 18" 20" 24"
DN 50 80 100 150 200 250 300 350 400 450 500 600
L/L1 292 356 432 559 660 787 838 889 991 1092 1194 1397
L2 295 359 435 562 663 790 841 892 994 1095 1200 1407
H 182 227 260 325 390 490 528 572 660 720 746 960
Weight 36 70 122 269 465 673 875 944 1220 1620 2120 3100

Note: 1- Tthe weight is for flanged RF ends check valve, weight in Kg.

           2-The dimensions are in mm.

Class 900 Swing Check Valve Dimension & Weight

Size Inch 2" 3" 4" 6" 8" 10" 12"
DN 50 80 100 150 200 250 300
L/L1 368 381 457 610 737 838 965
L2 371 384 460 613 740 841 968
H 296 300 327 441 502 664 775
Weight 70 91 150 305 510 810 1120

Note: 1- Tthe weight is for flanged RF ends check valve, weight in Kg.

           2-The dimensions are in mm.

Class 1500 Swing Check Valve Dimension & Weight

Size Inch 2" 3" 4" 6" 8" 10" 12"
DN 50 80 100 150 200 250 300
L/L1 368 470 546 705 832 991 1130
L2 371 473 549 711 841 1000 1146
H 296 341 412 511 680 756 857
Weight 70 150 245 550 1010 1550 2280

Note: 1- Tthe weight is for flanged RF ends check valve, weight in Kg.

           2-The dimensions are in mm.

Class 2500 Swing Check Valve Dimension & Weight

Size Inch 2" 3" 4" 6" 8" 10" 12"
DN 50 80 100 150 200 250 300
L/L1 451 578 673 914 1022 1270 1422
L2 454 584 683 927 1038 1292 1445
H 416 441 479 511 711 851 1000
Weight 145 330 650 1400 2420 3750 5500

Note: 1- Tthe weight is for flanged RF ends check valve, weight in Kg.

           2-The dimensions are in mm.

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