Vatac Api 6d Standard Double Expanding Slab Gate Valve

Vatac Api 6d Standard Double Expanding Slab Gate Valve

Slab Gate valves, also called through-conduit gate valves, are one-unit gates that include a bore size hole. The bore size hole is aligned with the two seat rings to create a smooth flow with minimal turbulence.

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Specification of this Vatac Api 6d Standard Double Expanding Slab Gate Valve
Slab Gate valves, also called through-conduit gate valves, are one-unit gates that include a bore size hole. The bore size hole is aligned with the two seat rings to create a smooth flow with minimal turbulence. This special design allows for minimal pressure loss on the system and is perfect for transportation of crude oil and natural gas liquids (NGLs). The valve seats remain clean, however, the disc cavity can capture foreign material. Therefore, the cavity typically has a built-in plug for maintenance purposes of draining the accumulated foreign material. The flat gate valves are mainly used for the oil & gas pipelines. Slab gate valves are also used for other purposes, such as the chemical, refining, petrochemical industry or particular technical requirements. The two sealing faces of a slab gate valve are perpendicular to the pipeline axis, its closing member is a single disc, valve equipped with a stretching mechanism.
From the aspect of structure style, the through conduit gate valve can be divided into two types of valves with diversion holes and valves without any diversion hole. 
Parameters of this Vatac Api 6d Standard Double Expanding Slab Gate Valve

Design standard as per: API 6D、ASME B16.34、GB/T 19672

The valve disc and valve seat seal are repeatedly treated by special processes, and protected by multiple seals, and featured with anti-corrosion, penetration-proof, anti-abrasion and long service life;

Valve seat is designed with hard-soft double seal, having reliable tightness;

With a full bore design, both the coefficient of flow resistance and the pressure loss are very small;

When the valve is fully opened, medium erosion occurring to its sealing face is smaller than that of other valves;

The through conduit gate valve with diversion holes installed on a pipeline can also be cleaned by a pipe cleaner directly;

For adjustment structure, the valve have a good flow adjusting ability;

No space restriction on valve installation, that is, both parallel and perpendicular installations are allowed.
Product Range

Body material: carbon steel, stainless steel,

Nominal diameter: 2"~36"

Pressure range:Class150~2500

End connection: RF, RTJ, BW

Working temperature:-46℃~+200℃

Operation : handwheel, gear box, electric, pneumatic actuator, electro-hydraulic actuator , etc. 

Pictures of this Vatac Api 6d Standard Double Expanding Slab Gate Valve
 

  

Product advantage of this Vatac Api 6d Standard Double Expanding Slab Gate Valve
Slab Gate valves advantages:
(1) fluid resistance small because valve body internal medium channel is the direct, medium flows when the valve without changing its flow direction, so fluid resistance.
(2), open and close a moment when saving for gate open gate movement direction perpendicular to the direction of flow and the media, and globe valves, gate valves open more effort.
(3) medium flow direction is unlimited, no pressure, reduce turbulence from the gate on both sides of the medium flows in any direction, all can reach the purpose of using more suitable for medium. May change flow direction in the pipeline.
(4) structure for the shorter length is vertical damper placed gate valve, cut-off valve disc is placed within the body level and structure length than globe valves.
(5) good seal performance by erosion when fully seal.
(6) wide open, sealing the erosion by working medium than globe valves are small.
(7), casting process is relatively simple, wide application scope. 

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