Through Conduit Slab Gate Valves
High-integrity, through-conduit slab gate valve built for large-bore, high-flow, high-pressure and high-temperature applications — offering robust sealing, in-line maintenance, and piggable full-bore flow.
The Through Conduit Slab Gate Valve is a heavy-duty isolation valve engineered for demanding pipeline, industrial, and offshore applications. It uses a through-conduit (straight-through) design that allows unobstructed flow when open, minimizing turbulence and pressure drop. The valve is built with a forged or cast body and bonnet, and employs metal-seated, bi-directional sealing with redundant sealing configurations.
With a rising stem, T-shaped joint between the gate and stem, and anti blow-out/anti-static safety features, it is suitable for high-pressure, high-temperature service environments. It supports full or reduced bore, soft- or metal-seated sealing, multiple end-connection types (flange, weld, hub, etc.), and various actuation methods including manual, electric, pneumatic, and hydraulic.
The fire-safe design and double isolation/double-block-and-bleed capability allow it to meet rigorous safety standards. This makes it ideal for pipelines, FPSO systems, injection lines, or critical shutdown and isolation functions across the energy, petrochemical, and industrial sectors.
Main Features
- Forged or Cast Body and Bonnet
- Bi-Directional Sealing
- Through Conduit
- Full or Reduced Bore
- Metal Seated
- Multiple redundant sealing configuration
- Rising Stem
- Standard Acting / Reverse Acting
- Backseat in open or close position
- T-shaped joint between gate and stem
- Static Sealing: Metallic
- Dynamic Sealing: Thermoplastic or Elastomeric (on seats only)
- Local position indicator
- Anti static Device
- Anti blow‐out stem
- Fire Safe Design (API 607, API 6FA, ISO 10497)
- Double Isolation and Bleed (DIB-1)
- Double Block and Bleed (API 607, API 6FA, ISO 10497)
Options
- Customized size and design pressure according to Project requirements
- Soft Seated
- Seat Skirts
- Electroless Nickel Plating on Stainless Steel (standard feature on Carbon Steel or LT Carbon Steel Material) pressure controlling parts
- Emergency Grease Injection points
- Extended Stem
- Available Design Validation: API 6A PR2F, ISO 15848-1, API 6D
- Client specific Type Approval or Design Validation test
- PED
- ATEX
- Overlay Cladding on Sealing Areas or all wetted parts
- Flushing ports / devices for cavity and sealing area
- Seat debris contamination preventers and/or dedicated scraper rings for sliding areas
- Welded Pups / Transition pieces Painting according to Customer Specification
Benefit
- Robust design
- Suitable for large bore, high flow applications.
- High sealing capability
- Particularly recommended for High Pressure and High Temperature Services
- In-line maintenance
Technical Data
2”- 60”
Class: # 150-2500
1 13/16” – 21 ¼”
From RWP Form 13.8 MPa (2.000PSI) to RWP 138 MPa (20.000PSI)
QSL 2, QSL3/3G, QSL4/4G
PSL-1, PSL-2, PSL-3, PSL-4
Main Components:
- Carbon steel
- Low temperature carbon steel
- Stainless austenitic steel and super-austenitic steel
- Stainless duplex and super-duplex
- Nickel superalloys (such as Monel, Inconel 625, Hastelloy)
NACE material available upon request Norsok material available upon request Hard Facing (Metal Seated):
- Tungsten Carbide Coating
- Chrome Carbide Coating
Seat insert (Soft Seated):
- Devlon
- Peek
- RPTFE
- PCTFE
- Nylon
- Handwheel / Manual gear
- Electric
- Hydraulic actuator (FAI, FC, FO)
- Pneumatic actuator (FAI, FC, FO)