Natural Gas Success Story

Facility: Major Gulf Coast Petrochemical Plant

Application Problem: Natural Gas/Methane OEM Turbo-Expander Vertical Installation

Spring Assist Check Valve DFT Inc.Solution: DFT® Model GLC® Check Valve

Success Since: 1999

Challenge: A Major Gulf Coast Petrochemical Plant was experiencing swing check valve failures. The plant was part of an OEM turbo-expander that originally installed swing check valves. These original valves had failed quickly due to low flow and excessive cycling/pounding. DFT was called to find a solution to their check valve problem.

Solution: The DFT® model GLC® Check Valves were custom-sized for this application to minimize excessive cycling and chattering problems that were seen with the previously installed swing-type check valves.

Installed were 16”, 18” and 20” DFT GLCs with a carbon steel body and stainless steel trim.

DFT® Model GLC Features:

  • 2” to 42” line size*
  • ASME class 150 to 2500
  • RF & RTJ flanged ends
  • “Short” face-to-face dimensions
  • Standard Body Materials:
    • A216 WCB carbon steel
    • A351 CF8M stainless steel
  • Stainless steel trim
  • Center-guided/dual-guided stem
  • Spring assisted silent closing, non-slam
  • Tight shutoff – lapped disc & seat
  • Horizontal or vertical installation
  • Protected spring
  • *Consult DFT for larger sizes

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