Wednesday, August 3, 2016

Sliding Gate Valve Trim for Maximized Flow Control

process control valve sliding gate style
Sliding Gate Valve
Courtesy Jordan Valve
Fluid flow control in a process can present a number of challenges, large and small. In addition to selecting a properly sized control valve, your choice of trim design can contribute noticeably to overall positive performance. One candidate for fluid flow control is the sliding gate valve.

The trim of a sliding gate valve essentially consists of a fixed disc and a movable plate installed directly in the flow path. The disc and plate have precisely located and sized perforations, slots, or other openings. The valve actuation mechanism slides the plate across the face of the disc, progressively changing the alignment of the openings in the plate and fixed disc. This type of design can bring some benefits to the process and user.

  • Short stroke length provides fast response, reduces wear on packing and diaphragm, allows for a compact installed assembly
  • Straight-through flow pattern reduces turbulence, noise, erosion, valve chatter, and cavitation
  • Ease of maintenance, with fewer trim components that are easily changed
  • Self cleaning, self lapping seats
The video below provides a clear illustration of how the sliding gate valve trim works, through animation and exploded views of the valve components. Share your fluid flow control challenges with a valve specialist and combine your process expertise with their product application knowledge for an effective solution.