Fractionation Flow Switches

Natural Gas Liquids (NGL) Fractionation processing facilities are used to separate ethane, propane, butane and other heavier hydrocarbons from the natural gas stream. Multiple trains and columns are used in this fractional distillation process and relief valves are critical safety devices deployed in the process. For the process to work efficiently and safely, the operation requires early and reliable indication when a relief valve leaks or lifts during an overpressure situation.
Model FLT93L In-line Flow Switch
Model FLT93S Insertion Flow Switch

FCI white paper article:  Natural Gas Fractionation Process Facilities Rely On Flow Switch For Relief Valve Leak Monitoring

FLT93 Flow Switch Benefits        

  • Saves time and ensures process safety; accurate, repeatable and reliable flow alarm; no false trips; no missed alarms
  • Ease of set-up and installation; FCI’s voltage output allows user to see into the process and accurately set the desired trip point
  • Proven, long service life; process industry’s most specified thermal flow switch, 190 years MTBF, standard 3 year warranty and SIL 2 Compliance
  • Flexible, robust: Dual relays user settable for any combination of flow and/or temperature alarms as low, high, low/high, low/low, or high/high; all metal enclosure, all-welded 316L flow sensor, Class 1, Div 1 [Zone 1] approvals

Fractionation Diagram