GRACO 115122 – Pressure Relief Valve, 1/8″ NPT(M), 4000 PSI

GRACO 115122 – Pressure Relief Valve to Atmosphere, 1/8″ NPT male, 4000 PSI

GRACO 115122 pressure relief valve designed for reliable overpressure protection in G-series pump systems, featuring 1/4 BSP threading for compression applications with oil-based fluids

Keep your machine running while lubrication gets to critical points. These performance indicators pinpoint lube line blockages but allow the lube system to continue to supply lubrication to points that are not blocked.

Additional Specifications

Thread: 1/4 BSP

Connection Type: Compression

Fluid Type: Oil

Specifications

Application	In-Plant Machinery, Off-Road Equipment
Compatible Material	Grease
Maximum Working Pressure (MPa)	28
Maximum Working Pressure (psi)	4000
Type	Relief Valve

Features

Pressure relief valve functionality

BSP threading for secure connection

Designed for compression applications

Compatible with oil-based fluids

Applications

G-series pump system overpressure protection

Industrial lubrication systems

Oil-based fluid applications

Compression system safety

Compatible Equipment

G-series pumps

CSP divider valves

Oil-based lubrication systems

vent valve installations

Model No. 115121

Related Parts

574010 – 1/8 NPT pressure relief valve

26C176 – 1/4 BSP alternate model

26C203 – 1/8 NPT alternate model

115122 – Pressure Relief Valve to Atmosphere, 1/8″ NPT male, 4000 PSI

Part of GRACO’s system design selector for G-series and dividers. Used in step 2 of the 8-step system selection process for pressure relief valve and outlet fittings selection. Required safety component to prevent system over pressurization when used with vent valve installations. Mentioned in safety warning only – no detailed specifications provided on this page. This part is included in Vent Valve Repair Kit 241571. Part of vent valve assembly for Model 115121.

Reference Manuals

300765 (Page 4) Automatic Lubrication

308954 (Page 4) Pneumatic and Hydraulic Vent Valve

308955 (Page 10) 50:1 Fire-Ball 300 Pump Module

309098 (Page 13) 5:1 Dynastar Pump Module

309099 (Page 1) 242063 Vent Valve