Non Return Valves 2018-05-09T07:20:19+00:00

cast-nrvSWING CHECK VALVE F/E

Technical Data
@  MANUFACTURING STD. : BS 1868
@  INSPECTION & TESTING STD. : ISO 5208 (REPLACE OF BS 6755 (PART-I)
@  END CONNECTION : FLANGED ENDS AS PER ASME B 16.5 RF 150# Butt Weld Ends to
ASME B 16.25
@  FACE TO FACE : AS PER ASME B16.10

Bill Of Material

Part Nomenclature Material Qty
1 BODY ASTM A 216 Gr.WCB – WC6/ CAST  IRONASTM A 351 Gr. CF8 / ASTM A 251 Gr. CF8M 1
2 TOP COVER ASTM A 216 Gr. WCB – WC6 / CAST IRONASTM A 351 Gr.CF8 / ASTM A 351 Gr. CF8M 1
3 DISC 13% Cr FACING ON WCB + STELLITED/SS 304-316 1
4 SEAT RING(SEAT WELD) 13% Cr + STELLITED/SS 304 / SS316 1
5 HINGE ASTM A 216 Gr. WCB – WC6 / CAST IRONASTM A 351 Gr. CF8 / ASTM A 351 Gr.CF8M 1
6 DISC NUT CARBON STEEL /STAINLESS STEEL 2
7 DISC WASHER CARBON STEEL /STAINLESS STEEL 1
8 HING PIN AISI 410/AISI 304/AISI 316 1
9 COVER GASKET METALLIC WIRE REINFORMED GRAPHITE ASBESTOS 1
10 COVER STUD ASTM A 193 Gr. B7 Req.
11 COVER NUTS ASTM A 194 Gr.2H Req.
12 LIFTING EYE BOLT ASTM A 105 1
13 NAME PLATE ALUMINIUM 1

 

TEST PRESSURE

CLASS       HYDROSTATIC
BODY SEAT & BACK SEAT
150 # 30 kg/cm2 22 kg/cm2
300 # 78 kg/cm2 57 kg/cm2
600 # 154 kg/cm2 114 kg/cm2
800 # 211 kg/cm2 141 kg/cm2
900 # 228 kg/cm2 168 kg/cm2
1500 # 378 kg/cm2 280 kg/cm2
2500 # 630 kg/cm2 462 kg/cm2

DIMENSION TABLE : ASA 150#

SIZE NB L OD OB T OG E OF
25 25 127 108 50.8 11.2 15.7 4 79.3
32 32 139.7 117.3 63.5 12.7 15.7 4 88.3
40 38 165 127 73.2 14.2 15.7 4 98.6
50 51 203 152.4 92 15.8 19 4 120.7
65 64 216 177.8 104.6 17.5 19 4 139.7
80 76 241.3 190.5 127 19 19 4 152.4
100 102 292 228.6 157.2 23.9 19 8 190.5
125 127 330 254 185.7 23.9 22.3 8 215.9
150 152 355.6 279.4 215.9 25.4 22.3 8 241.3
200 203 495.3 343 269.7 28.5 22.3 8 298.5
250 254 622 406.4 324 30.2 25.4 12 362
300 305 698.5 483 381 31.8 25.4 12 431.8
350 337 787 533 413 35.1 28.5 12 476.3
400 387 864 597 470 36.6 28.5 16 539.8
450 438 978 635 533 39.6 31.8 16 577.9
500 489 978 698 584 42.9 31.8 20 635
600 591 1295 813 692 47.8 35.1 20 749.3
SUBJECT TO TECHNICAL CHANGE WITHOUT NOTICE        ALL DIMENSIONS ARE IN M.M

DIMENSION TABLE : ASA 300#

SIZE NB L ØD ØB T ØG E ØF
25 25 216 124 50.8 17.5 19 4 89
32 32 229 133 63.5 19 19 4 98.5
40 38 241 155.5 73.2 20.5 22.3 4 114
50 51 267 165 92 22.3 22.3 8 127
65 64 292 190 104.6 25.4 22.3 8 149
80 76 317.5 209 127 28.5 22.3 8 168
100 102 355.6 254 157.2 32 22.3 8 200
125 127 400 279 185.7 35 22.3 8 235
150 152 444.5 318 215.9 36.5 22.3 12 270
200 203 533.4 381 269.7 41 25.4 12 330
250 254 622 444 324 47.7 29 16 387.5
300 305 711 521 381 50.8 32 16 451
350 337 838 584 413 54 32 20 514.5
400 387 864 648 470 57.2 35 20 571.5
450 438 978 711 533 60.4 35 24 628.5
500 489 1016 775 584 63.5 35 24 686

DIMENSION TABLE : ASA 600#

SIZE NB L OD OB T OG E OF
50 51 292 165 92 25.4 19 8 127
65 64 330 190.5 104.6 28.5 22.3 8 149.3
80 76 356 209.5 127 32 22.3 8 168
100 102 432 273 157.2 38 25.4 8 216
125 127 508 330 185.7 44.5 28.5 8 265.7
150 152 559 355.6 215.9 48 28.5 12 292
200 203 660 470 269.7 55.6 32 12 349.3
250 254 787 508 324 63.5 35 16 432
300 305 838 559 381 66.5 35 20 489
350 337 889 603 413 70 38 20 527
400 387 991 686 470 76 41 20 603

 

DIMENSION TABLE : ASA 900 #

SIZE NB L OD OB T OG E OF
50 48 368 216 92 38 25.4 8 165
80 73 381 241.3 127 38 25.4 8 190.5
100 98 457 292 157 44.45 31.75 8 235
150 146 609.6 381 216 55.6 31.75 12 317.5
200 190 736.6 470 270 63.5 38 12 394
250 238 838 546 324 70 38 16 470
300 283 965 610 381 79.2 38 20 533.4

 

DIMENSION TABLE : ASA 1500 #

SIZE NB L OD OB T OG E OF
50 48 368 216 92 38 25.4 8 165
80 73 470 267 127 47.8 31.75 8 203.2
100 98 546 311 157 54 35 8 241.3
150 146 705 394 216 82.5 38.1 12 317.5
200 190 832 483 270 92 44.45 12 393.7
250 238 991 584 324 108 50.8 12 482.6
300 283 1130 673 381 124 54 16 571.5

 

DIMENSION TABLE : ASA 2500 #

SIZE NB L OD OB T OG E OF
50 48 368 235 92 51 29 8 171.5
80 73 470 305 127 66.5 35 8 228.5
100 98 546 355.6 157 76 41 8 273
150 146 705 483 216 108 54 8 368.5
200 190 832 552 270 127 54 12 438
SUBJECT TO TECHNICAL CHANGE WITHOUT NOTICE       ALL DIMENSIONS ARE IN M.M

 

wafer-typeWAFER TYPE CHECK VALVE

Technical Data
@  MANUFACTURING STD. : MSS SP-81
@  INSPECTION & TESTING STD. : MSS SP – 81
@  END CONNECTION : LUG TYPE SUITABLE FOR ASA 150#

Bill Of Material

 

Part Nomenclature Material Qty
1 BODY IS 210 FG, 200 / ASTM A 216 Gr. WCBASTM A 351 CF8 / ASTM A 351 Gr. CF8M 1
2 CLAPPER IS 210 FG, 200 / ASTM A 216 Gr. WCBASTM A 351 CF8 / ASTM A 351 Gr. CF8M 1
3 CLAPPER PIN AISI 410 / AISI 304 / AISI 316 1
4 CLAPPER SEAL NIRTILE / EPDM / VITON / SILICON / PTFE 1
5 BODY SEAL NIRTILE / EPDM / VITON / SILICON / PTFE 2
6 LIFTING EYE M S / STAINLESS STEEL 1
7 NAME PLATE ALLUMINIUM 1

TEST PRESSURE

CLASS HYDROSTATIC
BODY SEAT
PN 10 10 kg/cm2 6 kg/cm2

 

DIMENSION TABLE

SIZE OA OB L
50 30 109 19
65 40 129 19
80 52 144 19
100 71 164 19
125 93 194 19
150 114 220 19
200 157 275 28
250 195 330 28
300 230 380 38
350 270 440 41
400 310 491 51
450 360 541 51
500 406 596 60
600 490 698 70
1000 910 1200 180
SUBJECT TO TECHNICAL CHANGE WITHOUR NOTICE      ALL DIMENSIONS ARE IN M.M

dual-plate-nrvWafer Type Dual Plate Check Valves

 

Wafer Type Dual Plate Check Valves are maintained open by the flow of fluid in the forward direction and are closed by back pressure of the fluid or by the weight of the closing mechanism or by a spring force. Available in Various designs and sizes. The range of these valves available from 50mm to massive units of 1600mm dia. All features put together make the valve as the most efficient & versatile design.

 

 

Specifications:

  • Size: 50 MM TO 1600 MM
  • Specification: General manufacturing standard,API 594
  • Application: Water, Oil etc.
  • MOC: CI/CS/SS/DI etc.

Dual Plate Check Valves

Dual Plate Check Valves are automatic in operation and designed to prevent reversal of flow in fluid piping systems. These valves are maintained open by the flow of fluid in the straight direction and are closed by back pressure of the fluid. The swing check variation is a low pressure drop unit based on a hinged disc. This valve is suitable for low velocity applications with infrequent velocity reversals. The valve can be fitted with external weights to allow faster closure to reduce water hammer or shock pressure on flow reversal.

The Dual Plate Check Valve employs two-spring-loaded plates hinged on a central hinge pin. When the flow decreases, the plates close by the action of torsion spring before flow reversal takes place. This design offers the twin advantages of No Water Hammer and Non Slam together. All the features put together make Dual Plate Check Valve as the most efficient & versatile design. It is also referred to as SILENT CHECK VALVE.

 

Specifications:

Size: 50 MM TO 1600 MM

Specification: General manufacturing standard, API 594

Application: Water, Oil etc.

MOC: CI/CS/SS/DI etc.