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Globe Valve

Globe Valve (Cast Steel Bolted Bonnet Valves)

Globe Valve (Cast Steel Bolted Bonnet Valves)

Design

Cast steel globe valve has been designed to conform to BS1873 and ASME B16.34. Wall thickness dimensions comply with API 600. Face to face, end to end, and center to face dimensions of flanged and butt welded valves are in accordance with ASME B16.10, BS 2080 and ISO 5752. End flange dimension conform to ASME B16.5. BW end dimension conform to ASME B16.25. Inspection and test are in accordance with API 598 and BS EN 12266.

Body and Bonnet
Castings are precisely machined. The gasket contacting surface is smooth finish that has a roughness between Ra 3.2 and 6.3 micrometer (125-250 microinch). The surface roughness of gasket grooves of ring joint faces do not exceed 63 micro inch. Body seat construction of cast steel valve is threaded seat ring. Provided with bosses for optional by-passes or drains.
 
Stem
Stem with precision Acme threads and burnished finish. 16 to 32 RMS stem surface finish, straightness and roundness are precisely controlled according to design and manufacturing standards.
 
Stuffing Box
Maximum 125 RMS surface finish. Cylindricity and verticality are precisely controlled according to design and manufacturing standards. Optional lantern rings and grease injectors are available.
 
Gland and Packing
Gland has a two-piece construction for easy alignment. Middle rings dieformed 100% laminated flexible graphite rings, top and bottom rings lattice braided graphite fiber with corrosion inhibitor.
 
Bonnet Gasket
Class 150 - 600: Jacketed graphite with stainless steel or spiral wound graphite with stainless steel. Class 900 and over: Ring joint metal gasket.
 
Bonnet Bolting
Coarse thread series for bolt sizes 1 inch and smaller,8-thread series for bolt sizes 11/8 inch and larger, both conform to Class 2A/2B tolerances.
 
Operators
Globe valves normally are handwheel operation, but are also available with gear, electric motor actuators, or cylinder actuators for remote operation.
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Salient Features
Face to face and End to end dimension : 36" and smaller to ASME B 16.10,
   
Flange Dimension : ASME B 16.5
   
Shell wall thickness : API 600
   
B.W. end to ASME B 16.25
   
12" and smaller valves have a one-piece bonnet and yoke design
   
14" and larger valves have a two-piece bonnet and yoke design
   
They are rugged and sturdy in construction.
   
Body and Bonnet castings have heavy metal sections in excess of minimum requirement.
   
Streamlined contours to ensure that the pressure drop is minimum.
   
Close-fitting male and female joint retains gasket in position and accurately centres the working parts.
   
Special Alloy of trim is highly heat resistant and non-corrodible.
   
Flat face of Valve & Seat lapped on flat surface lapping machine ensures better pressure tightness at fingertip operation, and minimises wear & tear of spindle & bonnet.
   
The extra-deep stuffing box together with the smooth ground spindle ensures fluid tightness and long packing life.
   
The gland is held in place by swinging hinge bolts which will not loosen in service.
   
A variety of end flange facings can be provided. Valve flanges can be drilled to different standards.
 
INSPECTION :
Third party inspection by any registered agency
 
TEST PRESSURE :
Hydrostatic Class 150 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
Body 450 1122 1450 2175 3250 5400 9000
Seat 315 825 1060 1600 2400 4000 6000
 
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Parts List
No. Parts Material
01 Body ASTMA216Gr.WCB
02 Seat Ring Attached
03 Disc S.S. 410/M.S.
04 Stem S.S. 410
05 Gasket S.S. 304 Jacketed Graphite
06 Bonnet ASTM A216 Gr. WCB
07 Bonnet Bolt ASTM A193 Gr.B7
08 Bonnet Nut ASTM A194 Gr.2H
09 Backseat Welded 410
10 Packing Graphite ring
11 Gland - I. bolt M.S. Fg.
12 Gland - I. bolt M.S.
13 Pin C.S.
14 Gland S.S. 410
15 Gland flange M.S. Propelyn
16 Stem Nut M.S.
17 Screw C.S.
18 Handwheel S.G. Iron
19 Washer M.S.
20 Nut M.S.
21 Disc. cover S.S. 410
22 Washer S.S. 410
APPLICABLE STANDARDS: TEST PRESSURE
MANUFACTURING STANDARD: BS 5352 MSS SP 84
SOCKET WELD: ANSI B 16.11
SCREWED: NPT-ANSI B 2.1, BSPT-BS21
BW ENDS TO: ANSI B 16.25
TESTING STANDARD: API 598
SHELL: 3000 psig
SEAT :  2000 psig AIR-80 PSIG
 
  SOCKET END
SIZE 15 20 25 40 50
L 85 92 106 122 140
H 158 164 180 240 258
H1 165 173 192 254 275
ØWh 80 80 95 150 150
ØB 21.7 27 33.8 48.6 61.1
C 10 13 13 13 16
 
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Notes for Gate Valve
The standard Body/Bonnet material is of cast steel to ASTM A 216 Gr. WCB Body/Bonnet in Grades LCB/C-5/WC-6/WC-9/CF-8/CF-8M/CF-3/ CF-3M Etc. Available to suit requirements. Trim : 304/316/Stellite Etc.
   
To facilitate operation, all heavy duty valves have Yoke Sleeves fitted with Thrust Ball Bearings. In class 150 and 300 Ibs., they are provided from nominal diameter 14" and onwards. In class 600, 900 and 1500 Ibs., from 6" and onwards.
   
Pressure sealed bonnet available in higher classes on request.
 
Class 150
NOM.
SIZE		 40
mm		 50
mm		 65
mm		 80
mm		 100
mm		 125
mm		 150
mm		 200
mm		 250
mm		 300
mm
L 165 203 216 241 292 365 436 495 622 698
D 127 152 178 190 229 254 279 343 406 483
T 17.5 19 22 23.8 24 24 25 29 30 32
H 254 267 292 318 365 400 444 584 786 915
H1 264 280 308 367 381 432 482 635 831 991
(All dimensions in mm)
Class 300
NOM.
SIZE		 40
mm		 50
mm		 65
mm		 80
mm		 100
mm		 125
mm		 150
mm		 200
mm		 250
mm		 300
mm
L 229 267 292 318 356 400 444 559 622 711
D 156 165 191 210 254 279 318 381 445 521
T 21 22 25 29 32 35 36 41 48 51
H 254 267 292 318 365 400 444 584 786 915
H1 264 280 308 367 381 432 482 635 831 991
(All dimensions in mm)
Class 600
NOM.
SIZE		 40
mm		 50
mm		 65
mm		 80
mm		 100
mm		 125
mm		 150
mm		 200
mm		 250
mm		 300
mm
L 241 292 330 356 432 508 559 660 787 838
D 155.6 165 190.5 209.5 273 330.2 355.6 419.1 508 558.8
T 22.2 25.4 28.6 31.7 38.1 44.4 47.6 55.6 63.5 66.7
H 395 440 510 540 595 680 775 980 1230 1300
H1 405 455 528 560 620 712 814 1032 1295 1375
(All dimensions in mm)
Class 900
NOM.
SIZE		 40
mm		 50
mm		 65
mm		 80
mm		 100
mm		 125
mm		 150
mm		 200
mm		 250
mm
L 305 368 419 381 457 559 610 737 838
D 177.8 215.9 244.5 241.3 292.1 349.2 381.0 469 546
T 31.7 38.1 38.1 38.1 44.4 50.8 55.6 63.5 69.8
H 500 570 690 590 720 870 970 1135 1500
H1 510 583 706 610 745 902 1008 1184 1560
(All dimensions in mm)
Class 1500
NOM.
SIZE		 40
mm		 50
mm		 65
mm		 80
mm		 100
mm		 150
mm		 200
mm		 250
mm
L 305 368 419 470 546 705 832 991
D 177.8 215.9 244.5 266.7 311.1 393.7 482.6 584.2
T 31.7 38.1 41.3 47.6 54 82.5 92.1 107.9
H 500 570 685 770 830 965 1035 1665
H1 510 583 702 790 855 1002 1082 1725
(All dimensions in mm)
Globe Valve (Cast Steel Bolted Bonnet Valves)
Impact type handwheel
 
 
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