Parallel Slab
Model B11
The parallel slab gate valve is the model B11 execution with parallel-faced gate and seats, available with bolted bonnet or pressure seal closure — the pressure seal option being typical for high pressure classes, where internal pressure energizes the bonnet gasket. The through conduit, full bore design keeps the line piggable and free of cavities exposed to flow.
Applications mirror those of the slab gate family: pipeline isolation, launcher/receiver stations, and process duties requiring a compact metal-to-metal seated gate valve.
The valve is designed to API 6D, API 6DSS or API 6A, with metal-to-metal hardfaced seats, back seat stem design, manual (handwheel or gearbox) or actuated operation, and SIL certification up to SIL 3.
| Applicable standards | API 6D, API 6DSS and API 6A Design according to ASME B16.34 or ASME VIII Div. 1 & 2 |
| Pressure Class Range | ANSI Class 150 lbs. to 4500 lbs. API6A Class 3000 PSI to 15000 PSI |
| Size Range | API 6D - from 1/2" to 42" API 6A - from 1.13/16" to 13.5/8" |
| Ends design | Flanged (RF/RTJ) - ASME B16.5, ASME B16.47 or MSS SP-44 Flanged (6B/6BX) - API 6A Compact (Norsok Standard L-005) Butt-Weld (ASME B16.25) and/or Butt-Weld + Pipe Hubbed according to client Clamp Special client's requirements |
| Body Design | Single piece |
| Bonnet Design | Bolted bonnet or Pressure Seal Type |
| Seat design | Non floating (without soft gasket) Metal to Metal (c/w hardfacing) |
| Valve operation | Manual: Handwheel or Gearbox Actuated: Pneumatic / Hydraulic / Electric / Electro-Hydraulic |
| Available Materials | CS, LTCS, SS, Duplex SS, Super Duplex SS, 6Mo, Inconel, Incoloy, Hastelloy, Monel, Titanium NACE MR0175 according to client request. |
| Additional Features | Double Block and Bleed, Normal or Reverse acting, Graphite or V-Pack stem sealing arrangement |
| Testing and Certification | Testing: Hydrostatic, High Pressure Gas, Pneumatic and Functional API 598 - API 6A PSL3G, API 6A PR2 & Endurance Fire testing: API 6FA, API 607, BS 6755 part 2, ISO 10497 Fugitive Emission Test: ISO 15848 - 1 & 2 SIL Certificate up to SIL 3 PED 2014/68/UE Mod.H |
