Through-Conduit Gate Valve

Through-conduit gate valves are one-unit gates that include a bore size hole as shown in figure on the right. In open state, 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.

These valves are used in pipelines where pigs are run through the piping to perform cleaning of built-up deposits or debris. The typical applications of conduit valves include dirty river water with suspended solids or water with sludge or debris.