Potter Roemer 4045 non-adjustable Reg-U-Matic pressure regulating valve

Potter Roemer 4045 Valve
BrandPotter Roemer
Model Code 4045
Inlet Size (in.)1.5
Model Info

It is used as a hose station to regulate inlet pressure to 300 PSI/20.6 bars. This cast brass valve with rising stem has brass and stainless steel internal parts, aluminum hand wheel, female NPT inlet X male hose thread outlet.


  • 1½"/3.8 cm Female X Female
  • Hydraulic piston design
  • Tamper Proof Pressures
  • Selected pressure control under residual and static conditions
  • Selected pressure control for 20 to 400 PSI/1.3 to 27.5 bars
  • Valve opens fully under low residual supply pressure
  • Monitor Switch Adapter to provide valve supervision

Additional Features:

  • Maximum back pressure does not damage valve components
  • Listed by Underwriters Laboratories as a checking device
  • Listed by Underwriters Laboratories up to 400 PSI/27.5 bars pressure
  • Complete piping system can be hydrostatically tested to 400 PSI/27.5bars without damage to valve
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