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SWING CHECK VALVE

Nisha Gate ValvesSalient Feature Option
Material of Construction
No. Part Name Material
10 Washer Stainless Steel AISI 410 / 304 / 316
9 Disc Nut AISI 410 / 304 / 316
8 Hinge Pin AISI 410 / 304 / 316
7 Seat Ring AISI 410 / WCB WITH 13% Cr. OR Stellite / A182 Gr.F6
6 Disc A 217 Gr. CA 15 / WCB WITH 13% Cr. OR Stellite
Nisha Valves (India) Ltd.
Material of Construction
No. Part Name WCB LCB WC6 WC9
05 Cover Stud &Nut A 193 Gr B7 / A194 Gr 2H A 320 Gr L7 / A194 Gr 4 A 193 Gr B16 / A 194 Gr 4/7 A 193 Gr B16 / A 194 Gr 4/7
04 Gasket Spiral Wound Spiral Wound Spiral Wound Spiral Wound
03 Hinge A 216 Gr WCB A 352 Gr LCB A 217 Gr WC6 A 217 Gr WC9
02 Cover A 216 Gr WCB A 352 Gr LCB A 217 Gr WC6 A 217 Gr WC9
01 Body A 216 Gr WCB A 352 Gr LCB A 217 Gr WC6 A 217 Gr WC9
No. Part Name C5 C12 CF8 CF8M
05 Cover Stud &Nut A 193 Gr B16 / A194 Gr 4/7 A 193 Gr B16 / A194 Gr 47 A 193 Gr B7/ B8 / A 194 Gr 2H/8 A 193 Gr B7/ B8M /A 194 Gr 2H/8M
04 Gasket Spiral Wound Spiral Wound Spiral Wound Spiral Wound
03 Hinge A 217 Gr C5 A 217 Gr C12 A 351 Gr CF8 A351 Gr CF8M
02 Cover A 217 Gr C5 A 217 Gr C12 A 351 Gr CF8 A351 Gr CF8M
01 Body A 217 Gr C5 A 217 Gr C12 A 351 Gr CF8 A351 Gr CF8M
 

Class 150
Size Inch 2 2.5 3 4 5 6 8 10 12 14 16 18 20 24
L,#L1 mm 203 216 241 292 330 356 495 622 699 787 864 977 977 1295
H mm 155 190 200 225 245 260 305 390 410 435 530 570 625 675
Wt.(approx) Kg 18 25 34 46 75 89 120 220 337 471 575 788 916 1275
Class 300
Size Inch 2 2.5 3 4 5 6 8 10 12 14 16 18 20 24
L,#L1 mm 267 292 318 356 400 444 533 622 711 838 864 977 1016 1346
H mm 180 200 225 240 275 310 370 410 440 500 545 605 675 785
Wt.(approx) Kg 26 32 53 73 110 157 234 348 450 650 800 970 1350 2210

Class 600
Size Inch 2 2.5 3 4 5 6 8 10 12 14 16 18 20
L,#L1 mm 292 330 355 431 508 558 660 787 838 889 991 1092 1194
H mm 190 215 250 260 310 350 420 490 525 580 630 690 810
Wt.(approx) Kg 33 49 62 95 120 195 360 465 725 875 1075 1475 1900
Class 900
Size Inch 2 2.5 3 4 5 6 8 10 12 14
L,#L1 mm 368 419 381 457 559 610 737 838 965 1029
H mm 195 235 260 275 320 370 435 520 530 580
Wt.(approx) Kg 55 70 90 135 165 295 525 900 1075 1225

Class 1500
Size Inch 2 2.5 3 4 5 6 8
L,#L1 mm 368 419 470 546 673 705 832
H mm 220 270 290 310 350 410 485
Wt.(approx) Kg 70 85 115 175 180 370 680

 

Swing Check Valve Product Range
SIZE CLASS
1/2"NB to 16" NB 150#
1/2"NB to 14" NB 300#
1" NB to 12" NB 600#
2" NB to 10" NB 900#
2" NB to 8" NB 1500#
2" NB to 8" NB 2500#
  Application
  • Petrochemical Industries
  • Pharmaceutical Plants
  • Oil Industries
  • Petroleum Refinery
  • Power Plants
  • Thermal & Gas
  • Fertilizers & Agro Chemicals
  • Steel Plant
  • Paper Industries
  • Cement Industries
  • Cryogenic Services
  Temperature Limits
Shell Matt. Lower limit Upper limit
  oF oC oF oC
Cast Iron (Graded) -20 -5 410 210
A216 GR WCB -20 -10 650 343
A352 GR LCB -50 -46 800 470
A351 GR CF8 -425 -254 850 454
A351 GR CF8M -425 -254 1500 816
Testing Standards
( Test Pressures in Kg / Cm2)
Valve
Class
Hydro
Shell
Hydro
Seat
Pneumatic
Seat
150# 30 22 6.2
300# 78 58 6.2
400# 105 77 6.2
600# 156 115 6.2
800# 211 141 6.2
900# 235 172 6.2
1500# 390 287 6.2
2500# 650 478 6.2
  Testing Duration

Value Size DN
Test Duration(sec)
  SHELL SEAT
DN < 50 15 15
50 <DN < 150 60 60
150 <DN < 300 120 120
350 <DN 300 120