FloLok Instrumentation Check Valves

The FloLok range of check valves from First Hose has been manufactured for process, alternative fuels, and instrumentation applications for pressures up to 6000 psig.


  • Medium-pressure ball poppet check valves
  • Medium-pressure fixed cracking pressure
  • Medium-pressure adjustable cracking pressure
  • High pressure check valves


  • Pressures up to 6000 psig
  • Temperature from -40° to 400° 400 F
  • Cracking pressures from 1/3 to 600 psig

Please contact our sales office for further advice.