GRACO 563158 - Automatic Relief Indicator for MX Divider Valves, 1500 PSI, 1/4 in NPTF

Automatic Relief Indicator designed to pinpoint lube line blockage while allowing the lube system to continue supplying lubrication to points that are not blocked. Used primarily in secondary divider valves, the excessive pressure created by line blockage moves a piston, enabling the lubricant to escape through a vent. When the blockage is removed, the spring resets the piston, allowing the lube system to keep operating when a lube point is blocked.

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 in NPTF
• Max Working Pressure: 103 bar, 1500 PSI
• Connection Type: MX only (not MXP)
• Color: Red
• Tolerance: ± 20%

Specifications

Features

• Precise pressure relief at 1500 PSI
• Compatible with pressure relief-to-atmosphere kits
• Reliable overpressure protection
• Pinpoints lube line blockage
• Allows lube system to continue operating during blockage
• Automatic operation via pressure-activated piston

Applications

• G3 pump system protection
• Fluid handling overpressure relief
• Industrial pumping applications
• Secondary divider valves
• Lubrication systems requiring blockage detection
• Systems where continuous operation during partial blockage is critical

Compatible Equipment

• 571058 - G-Series Pump Accessories Pressure Relief-to-Atmosphere Kit (Requires Pressure Relief Valve ) - Pressure Relief-to-Atmosphere Kit NPT
• 571070 - G-Series Pump Accessories Pressure Relief Valve Adapter, 1/4 BSPP - Pressure Relief-to-Atmosphere Kit BSPP, MX divider valves, 1/4 in NPTF threaded connections, MX Divider Valves

Related Parts

• 563156 - Automatic Relief Indicator for Mx Divider Valves, 750 PSI, 1/4" NPTF
• 563157 - Automatic Relief Indicator for Mx Divider Valves, 1000 PSI, 1/4" NPTF
• 563159 - Automatic Relief Indicator for Mx Divider Valves, 2000 PSI, 1/4" NPTF
• 563160 - Automatic Relief Indicator for MX Divider Valves, 2500 PSI
• 563161 - Automatic Relief Indicator for MX Divider Valves, 3000 PSI
• 571058 - G-Series Pump Accessories Pressure Relief-to-Atmosphere Kit (Requires Pressure Relief Valve )
• 571070 - G-Series Pump Accessories Pressure Relief Valve Adapter, 1/4 BSPP
• 24N948
• 563163 - Valve Relief 1/8 NPT 750 PSI, 1/8 NPTF
• 563164 - Valve Relief 1/8 NPT 1000 PSI, 1/8 NPTF

This pressure relief valve is required for use with pressure relief-to-atmosphere kits 571058 and 571070. Part of a family of pressure relief valves with different pressure ratings ranging from 52 bar (750 PSI) to 207 bar (3000 PSI). Separate pressure switch connected to audible or visual alarm should be used to warn of high pressure. Part of the automatic relief indicator family with color-coded spring retainers for pressure identification. Automatic relief indicator pinpoints lube line blockage but allows the lube system to continue supplying lubricant to points that are not blocked. Used primarily in secondary divider valves. When blockage occurs, excessive pressure created moves a piston, enabling lubricant to escape through a vent. When pressure is relieved the spring resets the piston. Color coded by pressure rating - identified by the color of the spring retainer located in the end of the indicator.

Reference Manuals

• 340574 (Page 8)
• 340706 (Page 5)
• L15401EN-C (Page 2)
• 312497 (Page 39)
• 332291 (Page 35)