Slab Gate Valve

Technical Features of Sedelon Slab Gate Valves

Full Bore Design: Ensures minimal pressure drop and allows the passage of PIGs (Pipeline Inspection Gauges).

Bi-directional Sealing: Reliable shut-off regardless of flow direction.

Emergency Sealant Injection: Built-in fittings for emergency stem and seat sealing to prevent leaks under extreme conditions.

Self-Relieving Seats: Automatically relieves excess pressure in the body cavity to protect the valve integrity

Specifications, Sizes, and Material Grades

Industrial Applications & Operating Environments

Mainline Transmission: Long-distance crude oil and natural gas pipelines.

Storage & Terminals: Tank farms and loading stations.

Petrochemical Refining: Handling viscous or high-pressure media.

Wellhead Systems: Upstream extraction and production manifolds.

Product FAQ

Q1: What are the main benefits of a Slab Gate Valve vs. a Wedge Gate Valve?

• A: Slab gate valves feature a flat, through-conduit disc. This provides a smooth flow path with no turbulence, allows for pipeline pigging, and reduces seat wear during operation.

Q2: Can Sedelon customize valves for sour service (H2S)?

• A: Yes. We offer specialized material configurations compliant with NACE MR0175/ISO 15156 to prevent sulfide stress cracking in harsh environments.

Q3: Is it possible to perform maintenance while the valve is under pressure?

• A: Our slab gate valves are equipped with emergency sealant injection ports. This allows operators to inject grease to restore sealing integrity temporarily without shutting down the line.

Q4: What testing is performed before shipping?

• A: Every valve undergoes hydrostatic and air testing according to API 6D and API 598 standards. We also provide Material Test Reports (MTR) and inspection certificates upon request.

Q5: How do I choose between a slab gate valve and an expanding gate valve?

• A: Slab gate valves are ideal for high-speed flow and pigging operations. Expanding gate valves provide a mechanical seal in both open/closed positions and are often preferred for wellhead services. Consult our engineers for a recommendation.

Class150  Slab Gate Valve

Class300  Slab Gate Valve

Class600  Slab Gate Valve