Facility: Major Gulf Coast Petrochemical Plant
Application Problem: Natural Gas/Methane OEM Turbo-Expander Vertical Installation
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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