Valves and Chokes | Expanding Parallel Gate Valves With Nonrising Stem

Expanding Parallel Gate Valves With Nonrising Stem
Destination:

This type of valves is used in the oilfield industry for drilling and production operations for nominal pressures of 140, 210, 350 bar (2000, 3000, 5000 PSI).
The products are designed to perform according to the requirements of PR1 Performance Requirement Level and, on request, PSL1, PSL2 and PSL3 Product Specification Levels.
About Material class and Temperature classification, see Appendix A.
Working medium: water, oil products, gases, steam.

Technical and constructive characteristics

PN
( bar, PSI)
DN
(in)
L
(mm)
R H
(mm)
D
(mm)
d
(mm)
d2
(mm)
n x d1 Weight
kos
140
(2000)
2 1/16 295 23 360 250 210 127 8 x d18 48
2 9/16 333 26 430 250 190 149,2 8 x d22 79
3 1/8 359 31 460 320 210 168 8 x d22 91
4 1/16 435 37 480 360 275 215,9 8 x d28 138
210
(3000)
2 1/16 371 24 375 320 215 165 8 x d26 76
2 9/16 422 27 420 320 245 190,5 8 x d30 105
3 1/8 435 31 480 320 265 190,5 8 x d26 120
4 1/16 511 37 630 450 295 235 8 x d35 190
350
(5000)
2 1/16 371 24 390 320 215 165 8 x d26 78
2 9/16 422 27 425 320 245 190,5 8 x d30 108
3 1/8 473 35 490 320 265 203 8 x d33 138,6
4 1/16 549 39 530 500 310 241,3 8 x d36 202

Constructive characteristics of the main components:

Available to meet all appropriate API 6A requirements.
Valve type: full-bore
Body shape - straight
Closing element - parallel gate
Stem - non-rising, provided with trapezoidal thread, in contact with the circulation fluid
The bonnet is fasteneted to the body by threaded stud bolts.
The valve is connected to the pipe by flanges provided with sealing metallic rings, 6B type.
The valves permit the replacement of the stem packing box while the valve is under pressure.

Working and testing regime

Nominal pressure
PSI
Working pressure
PSI
Testing pressure
PSI
120oC Strength Tightness
2000 2000 4000 2000
3000 3000 6000 3000
5000 5000 10000 5000

Body-bonnet sealing: metal-to-metal
Body-gate sealing: metal+ PTFE/metal
Stem-bonnet sealing: rubber sheet or PTFE.

Main materials:

  • Body and bonnet: alloy steel
  • Parallel gate: forged alloy steel
  • Stem: alloy steel
  • Body-bonnet sealing: carbon steel
  • Body-gate sealing: high alloy steel
  • Stem-bonnet sealing: rubber or PTFE
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