GRACO 563175 - Valve Relief Indicator O-Ring 2500 PSI, MHH, 1/8 in NPSF w/O-Ring

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, these performance indicators use excessive pressure created by line blockage to move a piston, enabling lubricant to escape through a vent. Features a spring reset mechanism and pressure rating of 2,500 PSI.

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: 1/8 in NPSF w/O-Ring
• Max Working Pressure: 172 bar (2494 PSI)
• Material: MHH, MSP and MXP
• Retainer Color: Aluminum
• Tolerance: ±20%
• Color: Aluminum

Specifications

Features

• Automatic relief indication
• O-Ring seal design
• High pressure rating of 172 bar
• Compatible with multiple equipment series
• Pinpoints lube line blockage while system continues operating
• Spring reset mechanism automatically resets piston when blockage is cleared

Applications

• Pressure monitoring
• Safety indication
• Hydraulic system protection
• Industrial fluid handling
• Secondary divider valves
• Lubrication systems requiring blockage detection

Compatible Equipment

• MJ series equipment
• MS series equipment
• MH series equipment
• MXP series equipment
• MHH lubrication systems
• MSP lubrication systems

Related Parts

• 563170 - Valve Relief Indicator O-Ring 750 PSI, 1/8" NPTF
• 563171 - Valve Relief Indicator O-Ring 1000 PSI, 1/8" Npsf w/o-Ring
• 563172 - Valve Relief Indicator O-Ring 1250 PSI
• 563173 - Valve Relief Indicator O-Ring 1500 PSI
• 563174 - Valve Relief Indicator O-Ring 2000 PSI
• 563176 - Valve Relief Indicator O-Ring 3000 PSI, 1/8" Npsf w/o-Ring
• 563163 - Valve Relief 1/8 NPT 750 PSI, 1/8 NPTF
• 563164 - Valve Relief 1/8 NPT 1000 PSI, 1/8 NPTF
• 563166 - Valve Relief 1/8 NPT 1500 PSI, 1/8 NPTF

Part of a family of automatic relief indicators with O-Ring seals available in different pressure ratings from 52 bar to 207 bar Formerly identified by retainer color (Aluminum for 2,500 PSI). Pressure ratings are now stamped on indicator body. If replacing indicators with unavailable pressure ratings, select next higher available pressure rating. Should be used with separate pressure switch connected to audible or visual alarm for high pressure warning. This is an automatic relief indicator that 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. Color-coded by pressure rating with aluminum color for 2500 PSI rating.

Reference Manuals

• 339427 (Page 22)
• L15401EN-C (Page 2)
• 312497 (Page 39)