GRACO 234257 – Pneumatic Back Pressure Regulator, P10-RP, 145 PSI Max, 15-145 PSI Range, Stainless

GRACO 234257 – Low Back Pressure Fluid Regulator, 145 Max psi, 15-145 PSI Range, 4.6 GPM, SS, Air Type, 3/8″(F) x 3/8″(F), 1/8″ BSPP Port

Air controlled, low pressure back pressure fluid regulator designed for precise pressure control in low-pressure fluid systems. Features stainless steel construction for durability and corrosion resistance, making it ideal for demanding industrial applications requiring consistent pressure regulation.

Features:

This back pressure regulator limits the supply pressure to a set value by opening an outlet and guiding back excess material when the predetermined pressure has been achieved. These valves are used in circulating systems.

Additional Specifications

Material: Stainless Steel (SS)

Max Viscosity: 1000 CPS

Type: Pneumatic, back pressure

Gauge Included: No

Regulated Pressure Range: 15-145 PSI (100-1000 kPa, 1-10 bar)

Series: B

Model: P10-RP NPT

Operating Mode: P – pneumatic

Action: R – back-pressure regulation

Gauge Port Size (in)	1/8
Gauge Port Type	BSPP
Includes	Regulator Only
Inlet Size (in)	3/8
Inlet Thread Type	NPT
Maximum Air Inlet Pressure (psi)	145
Maximum Flow Rate (GPM)	4.6
Maximum Regulated Pressure (psi)	145
Maximum Working Pressure (psi)	145
Minimum Regulated Pressure (psi)	15
Outlet Size (in)	3/8
Type	Back Pressure Regulator
Wetted Material	Stainless Steel, Tungsten Carbide, PTFE, Chemically Resistant Fluoroelastomer

Features

Air controlled operation

Low pressure system design

Stainless steel construction for corrosion resistance

Precise pressure regulation from 15-145 PSI

Handles fluids up to 1000 CPS viscosity

1/8 BSPP gauge port for pressure monitoring

Applications

Low pressure fluid systems

Air controlled pressure regulation applications

Industrial fluid handling systems

Applications requiring precise pressure control

Compatible Equipment

circulating systems

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Part of GRACO’s low pressure back pressure fluid regulator family. Requires external air supply for control. Gauge sold separately. Refer to instruction manual 309474 for proper installation and operation. Part of the B series back pressure regulators family. According to the key, P indicates pneumatic operating mode and R indicates back-pressure regulation action. Used in circulating systems to limit supply pressure to a set value

Reference Manuals

336834 (Page 3) Fluid Regulators List

309474 (Page 2) Low Pressure Fluid Regulators