Graco Back Pressure Regulator

Manufacturer Part Number: 237503

237503 is the back pressure regulator only. Part number 236770 includes the gauge, tube, inlet adapter and outlet swivel union. Graco back pressure regulators maintain the system pressure, regardless of flow demand

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graco 237503
Graco Back Pressure Regulator


Back Pressure Regulator, Bare, Low Pressure, 180 Max psi, SST, Manual, 3/8 npt(f) inlet x 1/2 npt(f) outlet


  • Compact and lightweight design saves space and reduces payload for small circulation systems
  • Tungsten and carbide materials ensure low wear and long life
  • PTFE/Elastomer hybrid diaphragm withstands wear while maintaining accurate responsiveness
Technical Specifications
Compatible Material Catalyst, Waterborne
Gauge Port Size (in) 1/4
Gauge Port Type NPT
Inlet Size (in) 3/8
Inlet Thread Type NPT
Maximum Flow Rate (GPM) 4.3
Maximum Regulated Pressure (psi) 180
Maximum Viscosity (cP) 1000
Maximum Working Pressure (psi) 300
Minimum Regulated Pressure (psi) 5
Outlet Size (in) 1/2
Outlet Thread Type NPT
Type Back Pressure Regulator
Wetted Material Stainless Steel, Tungsten Carbide With Nickel Binder, Acetal, PTFE

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