Top Valve

Top Valve liquid back pressure valves and pressure relief valves.

A line of diaphragm style back pressure and pressure relief valves has been introduced by Primary Fluid Systems Inc.called Top Valve. 

Features include a completely adjustable pressure range of 0-150 PSIG and a built-in air release to reduce priming difficulties with metering pumps.

Top Valve back pressure valves and pressure relief valves are available in seven sizes, 1/4" through 2" NPT and eight (8) materials of wetted construction. The seat design of this new line of valves greatly extends the normal life expectancy of the diaphragm.

Standard Features of Top Valve Back Pressure Valves and Pressure Relief Valves

  • PTFE laminated to EPDM backed diaphragm
  • Turn down handle limits pressure to 150 psig
  • Color coded handles indicate size at a glance
  • Rectangular shape with mounting ports
  • Spring design provides consistent pressure adjustments through the range (0-150 PSIG)
  • Long life diaphragm
  • Built-in optional, air release & gauge port

Materials of Construction Available:

  • PVC (Polyvinylchloride) 
  • CPVC (Chlorinated Polyvinyl Chloride)
  • PVDF (Kynar)
  • PP (Polypropylene)
  • Teflon (25% Glass Filled Teflon) 
  • S/S (Stainless Steel)
  • ALL20 (Alloy 20)
  • HASTC (Hastelloy C)