GRACO 237503 – Back Pressure Regulator, Bare, Low Pressure, 180 PSI Max, Stainless Steel, 3/8″

GRACO 237503 – Back Pressure Regulator, Bare, Low Pressure, 180 Max psi, SST, Manual, 3/8 NPT(F) inlet x 1/2 NPT(F) outlet

Low pressure fluid back pressure regulator designed for catalyst and waterborne material applications. Features stainless steel wetted materials for chemical compatibility, tungsten and carbide components for durability, and compact lightweight design ideal for small circulation systems.

Features:

Control upstream fluid pressure with Graco back pressure regulators. Our back pressure regulators use closed loop control to maintain the pressure of the system regardless of flow demand. This allows operators to trigger guns, valves, and other flow controls without changing the system pressure.

Stainless steel wetted materials are compatible with catalyst and waterborne materials

Tungsten and carbide materials ensure low wear and long life

Compact and lightweight design saves space and reduces payload for small circulation systems

PTFE/Elastomer hybrid diaphragm withstands wear while maintaining accurate responsiveness

Air operated model available for automated control, Conversion kit (237448)

Additional Specifications

Thread: 3/8 NPT(F) inlet x 1/2 NPT(F) outlet

Material: Stainless Steel (SS)

Type: Spring

Gauge Included: No

Regulated Pressure Range: 0-12 bar (0-180 PSI)

Wetted Parts: SST

Includes Gauge: No

Compatible Material	Catalyst, Waterborne
Gauge Port Size (in)	1/4
Gauge Port Type	NPT
Includes	Gauge, Tube, Inlet Adapter and Outlet Swivel Union
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)	3/8
Outlet Thread Type	NPT
Type	Back Pressure Regulator
Wetted Material	Stainless Steel, Tungsten Carbide With Nickel Binder, Acetal, PTFE

Features

Spring-loaded pressure regulation

Stainless steel construction for corrosion resistance

Wide pressure range (5-180 PSI)

High viscosity capability up to 1000 CPS

Compact low pressure design

1/4 F gauge port for pressure monitoring

Applications

Paint spraying systems

Coating applications

Low pressure fluid delivery

Pressure regulation in finishing equipment

Back pressure regulation in fluid systems

Low to medium pressure applications

Related Parts

205122 – Back Pressure Regulator, Low Pressure Mini, 180 Max psi, CS, Manual, 3/8 (m) x 3/8 (F), w/ Gauge

236770 – Stainless Back Pressure Regulator, 3/8 F, 1/4 F Gauge, 180 PSI Maximum

206019 – Low Pressure Fluid Back Pressure Regulator, 180 PSI max pressure, AL wetted parts, manual, 1″(F) inlet, 1″(F) outlet w/ gauge

Part of GRACO’s low pressure back pressure regulator family. Gauge sold separately. Refer to instruction manual 308401 for complete operating instructions. This is a bare regulator without gauge included. Part of the Back Pressure Regulator (0-25 PSI) (8-17 bar) family. Other models in same pressure range include 236770 and 206019. Part of the Low Pressure Mini Fluid Back Pressure Regulator (BPR) family. Air operated model available for automated control with Conversion kit (237448). Instruction manual 308401.

Reference Manuals

336834 (Page 3) Fluid Regulators List

345020 (Page 37) Finishing Accessories

308401 (Page 1) Back Pressure Regulator, SST, Waterbase Compatible