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.

cast steel swing check valve
cast steel swing check valve api 6d full bore swing check valve cast steel swing check valve drawing counter weight swing check valve flanged end swing check valve

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
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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