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
