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Swing Check Valve

Design

NU-TECH cast steel valves are designed and manufactured to provide maximum service life and dependability. ALL check valves meet the design requirements of American Petroleum Institute standard API600 & API 6D. BS EN 13709 and generally, Conform to American Society of Mechanical Engineers standard ASME B16.34. VaLves are available in a compLete range of body/bonnet materials and trims.

Available Modifications Fon "NU-Tech Cast Steel Valves

  • Trim Changes
  • End Connection Modifications
  • Packing and Gasket Change
  • Operator Mounting
  • Handwheel Extensions
  • Pressure Equalizing
  • Customer Specified Coatings
  • Weld End Bore Changes
  • Oxygen & Chlorine Clearing & Packaging

Eyebolt

For 150Lb-8', 300Lb-8" 600Lb-6" • 900Lb-1500Lb/2500Lb-4"& over. Bolted cover.

BC

Welded cover & Pressure seal bonnet in services requiring frequent cycling or with high pressure/term perature variations.

End Connection

A choice of flanged, WO flanged or butt welding end for piping flexibiLity.

Body to Cover Joint

A male & female joint or tongue and groove joint is used 150Lb to 600Lb valves. Ring joint is used in the body to cover connection in 900Lb & higher rated valves.

Range Of Materials

Standard body/bonnet materials include nine grades of carbon, low alloy & stainless steels. For special applications they can be supplied in other grades of alloy & stainless steeL Threre's a full range of trim materials to match any service optional packing S, gasket materiaLs are available for a fulL range of service conditions.

Outside Lever B Weigh

All external hinge pin swing check valves 12" & smaller are available with an optional outside lever and weight, internal hinge available with all swing check valves.

Seat Rign

Separate heavy duty fulL ported rings for easy maintenance, Screwed or welded connection into body.

Hcu Weighted Mechanical Accumulator

This design can be used to either dampen or assist closing of the check valve disc depending on orientation. by using the hydraulic controL unit to buffer action the disc, the vaLve opens at lower flow rates.

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Swing , Cast Steel Check Valve 150LB/300LB

Appiicarit Standards

  • Steel Check Valves API 6D
  • Steel Check Valves ISO 14313
  • Steel Valves ASME 81634
  • Face To Face ASME B16.10
  • End Flanges ASME B16.5
  • Butt Welding Ends ASME B16.25
  • Inspection and Test API 598/API 6D

Design Descriptions

  • Bc, Bolted Cover
  • Swing Type, Anti-rotation Disc
  • Renewable Seat Rings
  • Non-penetrate Disc Shaft
  • Horizontal Or Vertical Service
  • Flanged Or Butt Welding Ends

Materials Of Parts

S. No. Part Name Carbon Steel ASTM Material 1/1/4cr-1/2 mo
1 Body A2113-WCB A217-WC6
2 Cover A216-WCB A217-WC6
3 Disc 1 Al 05-CR13 Al 82-F1 1 +HF
4 Hinge A216-WCB A217-WC6
5 Fork Part A216-WCB P21 7-W6
6 Seat Ring A105+CR13 Al 82-F11 +HF
7 Hinge Pin A276-420 A276-304
8 Disc Washer Carbon Steel A276-304
9 Disc Nut Carbon Steel A194-7
10 Disc Nut Pln Carbon Steel A276-420
11 Gasket Spiral wound (Graphite+304)
12 Stud A193-B7 A193-B18
13 Stud Nut A194-2H A194-7
14 Eye Bolt 2 Carbon Steel

Dimensional Datas Of Ansi Class 150 LB

NPS 2 2/1/2 3 4 6 8 10 12 14 16 18 20 24 26 28 30 36 in
DN 50 65 80 100 150 200 250 300 350 400 450 500 600 650 700 750 900 mm
L/L1 8 8.5 9.5 11.5 14 19.5 24.5 27.5 31 34 38.5 38.5 51 51 57 60 77 in
(RF/BW) 203 216 241 292 356 495 622 966 787 864 978 978 1295 1295 1448 1524 1956 mm
L2 8.5 9 10 12 14.5 20 25 28 31.5 34.5 39 39 51.5 in
(RTJ) 216 229 254 305 368 508 635 711 800 876 991 991 1308 mm
H 6 6.5 6.88 8 11.5 13.88 15.38 17 18.75 20.62 22.88 24.62 34.75 37 37 38.62 48 in
152 165 175 204 293 353 390 432 475 525 582 627 883 940 940 980 1220 mm
Wt(kg.) 14 20 25 40 71 118 177 263 353 542 632 855 970 1600 1600 1990 2760 RF/RTJ
10 12 17 29 57 96 143 227 295 468 552 755 831 1420 1420 1760 2230 BW

Dimensional Datas Of Ansi Class 300 LB

NPS 2 2/1/2 3 4 6 8 10 12 14 16 18 20 24 26 28 30 36 in
DN 50 65 80 100 150 200 250 300 350 400 450 500 600 650 700 750 900 mm
L/L1 10.5 11.5 12.5 14 17.5 21 24.5 28 33.00 34.00 38.5 40 53 53 59 62.75 82 in
(F1F/BW) 267 292 318 356 445 533 622 711 838 864 978 1016 1346 1346 1499 1594 2083 mm
L2 11.12 12.12 13.12 14.62 18.12 21.62 25.12 28.62 33.62 34.62 39.12 40.75 53.88 54 60 63.75 in
(RTJ) 283 308 333 371 460 549 638 727 854 879 949 1035 1368 1372 1524 1619 mm
H 6 6.5 6.88 8 11.5 13.88 15.38 17 18.75 20.62 22.88 24.62 34.75 35.88 37 38.62 48 in
152 165 175 204 992 353 390 432 475 525 582 627 883 910 940 980 1220 mm
VVt(kg.) 16 23 29 46 82 136 204 302 405 625 730 985 1115 1465 1840 2290 3180 RF/RTJ
11 13 18 31 61 103 155 245 315 503 593 812 895 1205 1525 1895 2395 BW
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Swing , Cast Steel Check Valve 600 LB /900 LB

Appucalle Standards

  • Steel Check Valves API 6D
  • Steel Check Valves ISO 14313
  • Steel Valves ASME B16.34
  • Face To Face ASME B16.10
  • End Ranges ASME B16.5
  • Butt Welding Ends ASME B16.25
  • Inspection and Test API 598/API 6D

Design Descriptions

  • BC, Bolted Cover
  • Swing Type, Anti-rotation Disc
  • Renewable Seat Rings
  • Non-penetrate Disc Shaft
  • Horizontal Or Vertical Service
  • Ranged Or Butt Welding Ends

Materials Of Parts

No. Part Name Carbon Steel  ASTM Material 1/1/4cr-1/2 mo
1 Body A2163NCB A2173AfC6
2 Cover A216-WCB A217-WC6
3 Disci A105-CR13 A182-F11+HF
4 Hinge A216-WCB A217-WC6
5 Fork Part A216-WCB  A217-WC6
6 Seat Ring A105+CR13  A182-F11+HF
7 Hinge Pin A276-420  A276-304
8 Disc Washer Carbon Steel  A276-304
9 Disc Nut Carbon Steel  A194-7
10 Disc Nut Pln Carbon Steel A276-420
11 Gasket Spiral wound (Graphite+304)
12 Stud A193-B7 A193-B16
13 Stud Nut A194-2H A194-7
14 Eye Bott 2 Carbon Steel

Dimensional Datas Of Ansi Class 600 LB

NPS 2 2/1/2 3 4 6 8 10 12 14 16 18 20 24 in
DN 50 65 80 100 150 200 250 300 350 400 450 500 600 mm
L/L1 8 8.5 9.5 11.5 14 19.5 24.5 27.5 31 34 38.5 38.5 51 in
(RF/BW) 203 216 241 292 356 495 622 966 787 864 978 978 1295 mm
L2 8.5 9 10 12 14.5 20 25 28 31.5 34.5 39 39 51.5 in
(RTJ) 216 229 254 305 368 508 635 711 800 876 991 991 1308 mm
H 6 6.5 6.88 8 11.5 13.88 15.38 17 18.75 20.62 22.88 24.62 34.75 in
152 165 175 204 293 353 390 432 475 525 582 627 883 mm
Wt(kg.) 24 35 44 70 125 207 310 460 615 945 1105 1495 1695 RF/RTJ
16 19 26 44 87 147 220 350 452 720 845 1160 1280 BW

Dimensional Datas Of Ansi Class 900 LB

NPS 2 2/1/2 3 4 6 8 10 12 14 16 18 20 24 in
DN 50 65 80 100 150 200 250 300 350 400 450 500 600 mm
L/L1 14.5 16.5 15 18 24 29 33 38 40.5 44.5 48 52 in
(RF/BW) 368 419 381 457 610 737 838 965 1029 1130 1219 1321 mm
L2 14.62 16.62 15.12 18.12 24.12 29.12 33.12 38.12 40.88 44.88 48.5 52.5 in
(RTJ) 371 422 384 460 613 740 841 968 1144 1140 12.32 1334 mm
H 9.5 10 11 12.5 18.12 22 24 26.5 32 32 33.5 38.75 in
240 256 278 320 460 560 610 675 815 815 850 985 mm
Wt(kg.) 37 54 68 109 195 321 481 711 956 1468 1870 2316 RF/RTJ
21 25 34 58 115 194 290 461 597 950 1210 1533 BW
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Swing , Cast Steel Gate Valve 1500 LB /2500 LB

Applicable Standards

  • Steel CheckValves BS EN 13709/API 600
  • Steel Valves ASME B16.34
  • Face To Face ASME B16.10
  • End Ranges ASME B16.5
  • Butt Welding Ends ASME B16.25
  • Inspection and Test API 598/API 6D

Design Descriptions

  • PSB, Pressure Seal Bonnet
  • Rexible Disc, Fully Guided
  • Renewable Seat Rings
  • Ranged or Butt Welding Ends

Materials Of Parts

No. Part Name Carbon Steel  ASTM Material 1/1/4cr-1/2 mo
1 Body A216-WCB A217-W06
2 Pres. Seal Bonner  A216-WCB A217-WC6
3 Disc Al 05-HF A182-Fl1+HF
4 Hinge A2113-WCB A217-W6
5 Seat Ring Al 05-HF A182-F11+HF
6 Hinge Pin Steel Ring A276-304
7 Bonnet Gasket A276-420 30485 Ring
8 Adapter Ring Carbon Steel A276-420
9 Retainer Carbon Steel A276-420
10 Cover Carbon Steel Alloy Steel
11 Bonnet Stud A193-B7 A193-B7
12 A194-2H A194-2H A194-2H
13 Eye Bolt  Carbon Steel 

Dimensional Datas Of Ansi Class 1500 LB

NPS 2 2/1/2 3 4 6 8 10 12 14 16 in
DN 50 65 80 100 150 200 250 300 350 400 mm
L/L1 14.5 16.5 18.5 21.5 27.15 32.75 39 44.5 49.5 54.5 in
(RF/BW) 368 419 470 546 705 832 991 1130 1257 1384 mm
L2 14.62 16.62 18.62 21.62 28 33.12 39.38 45.12 50.25 55.38 in
(RTJ) 371 422 473 549 711 841 1000 1146 1276 1407 mm
H 9.5 10 13 14.75 18.88 23.5 26 29.12 30.88 32.88 in
240 256 330 375 480 595 660 740 785 835 mm
Wt(kg.) 40 63 70 115 250 470 740 1100 1410 1600 RF/RTJ
29 47 49 84 152 310 470 710 910 1100 BW

Dimensional Datas Of Ansi Class 2500 LB

NPS 2 2/1/2 3 4 6 8 10 12 14 16 in
DN 50 65 80 100 150 200 250 300 350 400 mm
L/L1 17.75 20 22.75 26.5 36 40.25 50 56 in
(RF/BW) 451 508 578 673 914 1022 1270 1422 mm
L2 17.88 20.25 23 26.88 36.5 40.88 50.88 56.88 in
(RTJ) 454 514 584 683 927 1038 1292 1445 mm
H 17.75 13.25 13.75 15.12 19.5 24.62 28 35.62 in
275 335 350 385 495 625 712 905 mm
Wt(kg.) 50 76 85 165 460 900 1300 1800 RF/RTJ
35 55 68 115 225 580 860 1150 BW
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