1. Product Overview
Slab gate valves provide full-opening on/off isolation in wellhead equipment, well-control systems and high-pressure manifolds. They are not intended for throttling or flow-direction control.
The valve is used in kill manifolds, choke manifolds, mud manifolds, standpipe manifolds, high-pressure drilling fluid manifolds, and other wellhead or manifold control systems.
Rising-stem and non-rising-stem designs are available, with manual or hydraulic operation to match different field control requirements.
2. Design Features
The full-opening, straight-through bore minimizes pressure drop and turbulence when the valve is fully open.
Flanged, threaded, and union-end connections allow matching with common high-pressure manifold systems.
Slab, seat and surface-treatment selections are matched to the ordered pressure, temperature, fluid and material class.
The valve body is an integral forging heat-treated to the specified mechanical-property requirements for rated pressure-containing service.
Rising- and non-rising-stem configurations are selected according to available operating clearance, position indication and maintenance access.
3. Slab Gate Valve Main Technical Parameters
Rising-Stem Slab Gate Valve:
Rated Working Pressure: 5,000 psi to 15,000 psi
Nominal Bore: 2 1/16″ to 4 1/16″
Rated Operating-Temperature Range*: -29 °C to 121 °C
Material Class: DD to EE
Product Specification: API Spec 6A; sour-service metallic-material selection: NACE MR0175/ISO 15156, where ordered
| Model | Nominal Flange Size | Rated Working Pressure | Overall Dimensions (mm) | Ring Gasket Specification | ||
|---|---|---|---|---|---|---|
| 2 1/16" API 6A Flanged, 5,000 psi, Rising Stem | 2 1/16″ | 5,000 psi | 371 | 340 | 525 | R24 |
| 2 1/16" API 6A Flanged, 10,000 psi, Rising Stem | 2 1/16″ | 10,000 psi | 521 | 340 | 825 | BX152 |
| 2 1/16" API 6A Flanged, 15,000 psi, Rising Stem | 2 1/16″ | 15,000 psi | 483 | 340 | 765 | BX152 |
| 2 9/16" API 6A Flanged, 5,000 psi, Rising Stem | 2 9/16″ | 5,000 psi | 422 | 340 | 764 | R27 |
| 2 9/16" API 6A Flanged, 10,000 psi, Rising Stem | 2 9/16″ | 10,000 psi | 565 | 340 | 830 | BX153 |
| 2 9/16" API 6A Flanged, 15,000 psi, Rising Stem | 2 9/16″ | 15,000 psi | 533 | 365 | 810 | BX153 |
| 3 1/8" API 6A Flanged, 5,000 psi, Rising Stem | 3 1/8″ | 5,000 psi | 473 | 380 | 905 | R35 |
| 3 1/16" API 6A Flanged, 10,000 psi, Rising Stem | 3 1/16″ | 10,000 psi | 620 | 393 | 979 | BX154 |
| 3 1/16" API 6A Flanged, 15,000 psi, Rising Stem | 3 1/16″ | 15,000 psi | 598 | 425 | 1031 | BX154 |
| 4 1/16" API 6A Flanged, 5,000 psi, Rising Stem | 4 1/16″ | 5,000 psi | 550 | 340 | 1050 | R39 |
| 4 1/16" API 6A Flanged, 10,000 psi, Rising Stem | 4 1/16″ | 10,000 psi | 670 | 452 | 1120 | BX155 |
| 4 1/16" API 6A Flanged, 15,000 psi, Rising Stem | 4 1/16″ | 15,000 psi | 730 | 512 | 1222 | BX155 |
Non-Rising-Stem Slab Gate Valve:
Rated Working Pressure: 5,000 psi to 15,000 psi
Nominal Bore: 2 1/16″ to 4 1/16″
Rated Operating-Temperature Range*: -29 °C to 121 °C
Material Class: DD to EE
Product Specification: API Spec 6A; sour-service metallic-material selection: NACE MR0175/ISO 15156, where ordered
| Model | Nominal Flange Size | Rated Working Pressure | Overall Dimensions (mm) | Ring Gasket Specification | ||
|---|---|---|---|---|---|---|
| 2 1/16" API 6A Flanged, 5,000 psi, Non-Rising Stem | 2 1/16″ | 5,000 psi | 371 | 144 | 459 | R24 |
| 2 1/16" API 6A Flanged, 10,000 psi, Non-Rising Stem | 2 1/16″ | 10,000 psi | 521 | 149 | 584 | BX152 |
| 2 1/16" API 6A Flanged, 15,000 psi, Non-Rising Stem | 2 1/16″ | 15,000 psi | 483 | 149 | 584 | BX152 |
| 2 9/16" API 6A Flanged, 5,000 psi, Non-Rising Stem | 2 9/16″ | 5,000 psi | 422 | 151 | 602 | R27 |
| 2 9/16" API 6A Flanged, 10,000 psi, Non-Rising Stem | 2 9/16″ | 10,000 psi | 565 | 184 | 628 | BX153 |
| 2 9/16" API 6A Flanged, 15,000 psi, Non-Rising Stem | 2 9/16″ | 15,000 psi | 533 | 184 | 628 | BX153 |
| 3 1/8" API 6A Flanged, 5,000 psi, Non-Rising Stem | 3 1/8″ | 5,000 psi | 473 | 183 | 572 | R35 |
| 3 1/16" API 6A Flanged, 10,000 psi, Non-Rising Stem | 3 1/16″ | 10,000 psi | 620 | 190 | 622.4 | BX154 |
| 3 1/16" API 6A Flanged, 15,000 psi, Non-Rising Stem | 3 1/16″ | 15,000 psi | 598 | 190 | 622.4 | BX154 |
| 4 1/16" API 6A Flanged, 5,000 psi, Non-Rising Stem | 4 1/16″ | 5,000 psi | 550 | 293 | 756 | R39 |
| 4 1/16" API 6A Flanged, 10,000 psi, Non-Rising Stem | 4 1/16″ | 10,000 psi | 670 | 295 | 800 | BX155 |
| 4 1/16" API 6A Flanged, 15,000 psi, Non-Rising Stem | 4 1/16″ | 15,000 psi | 737 | 300 | 850 | BX155 |
4. Slab Gate Valve Repair Kit
Rising-Stem Slab Gate Valve Repair Kit:
① Inner seal-ring washer 2
② Seal ring 2
③ Outer seal-ring washer 1
④ Slab 1
⑤ Seat and seal ring 4
⑥ Rectangular seal ring or wave spring 2
Non-Rising-Stem Slab Gate Valve Repair Kit:
① Lip seal ring assembly 1
② Washer 1
③ Slab 1
④ Seat 2
⑤ O-ring 4
⑥ Wave spring 2
* Actual temperature capability depends on the documented material, elastomer, lubricant and ordered service configuration.
