The GRACO 563175 is an automatic relief indicator designed for use with MSP, MXP, MHH, and MJ divider valves. It features a 1/8 in. NPT connection with an O-ring seal and is rated for pressures up to 2500 psi (172 bar). Its primary function is to indicate when system pressure exceeds safe limits, allowing lubricant to escape through a vent and protecting the lubrication system from overpressure. The material is not explicitly specified, but similar indicators are typically made from carbon steel or stainless steel.

Key Features:

• Automatic Relief Indicator
• 1/8 in. NPT with O-ring
• 2500 psi (172 bar)
• MSP, MXP, MHH, and MJ Divider Valves
• Automatic pressure relief
• O-ring seal for leak prevention
• Spring reset mechanism
• Indicates when pressure exceeds set limit
• Permits system to keep operating when a lube point is blocked

Applications:
Used in lubrication systems to protect against overpressure, especially in industrial and vehicle service environments where divider valves are employed.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the lubrication system.
• Ensure proper thread engagement and torque when installing the indicator
• Check O-ring for damage before installation
• Verify system pressure does not exceed the indicator’s rated capacity
• For best results, use a separate pressure switch connected to an audible or visual alarm to warn of high pressure
• Regularly inspect the indicator for signs of wear or leakage
• Replace O-ring if damaged or during routine maintenance
• Monitor system pressure and indicator operation to ensure proper function