Check & Relief Valves

A valve is a device that regulates, directs or controls the flow of a fluid by
opening, closing, or partially obstructing various passageways.

Valves are technically valves fittings, but are usually discussed as a separate category.



  • Working Pressure : 6,000 psig
  • Cracking Pressure : 220 to 6,000 psig
  • -18 to 400℉ (-28 to 204℃)
  • Stainless Steel with FKM seals
  • DK-Lok 1/4 to 1/2 in. OD
  • Pipe thread 1/4 to 1/2 in.

Brief Description

  • Install the valve between the pump outlet as close as possible, and any shut-off device in the discharge line. The preferable mounting position is vertical with the adjusting cap at the top.
  • By-passes the system fluid to porevent instrument or sensitive gauge in the system from excess pressure.
  • When the inlet pressure overcomes the set spring pressure on th poppet, the poppet lifts off the valve seat,allowing flow to pbypass and thereby balance the system pressure.