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Graco 563159 Valve, Relief, 1/4 Npt, 2000 Psi

Maintains safe operating pressure in progressive lubrication systems by relieving excess pressure and indicating blocked lubrication lines while protecting connected components.

  • 1/4 NPT threaded connection
  • Maximum pressure rating: 2000 PSI (138 bar)
  • Compatible with MSP, MX, MXP, MJ, and MHH divider valves
  • Automatic reset after blockage is cleared

$30.2
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Compatible Equipment & Product Overview

Compatible Machines & Divider Valve Systems

Compatible Equipment Application
MSP Divider Valves Automatic lubrication systems
MX Divider Valves Industrial lubrication distribution systems
MXP Divider Valves Progressive grease and oil lubrication
MJ Divider Valves Heavy-duty lubrication applications
MHH Divider Valves High-performance centralized lubrication systems
In-plant Machinery Automatic grease and oil delivery systems
Off-road Equipment Centralized lubrication systems
Compressor Equipment Lubrication pressure monitoring

About the Graco 563159 Relief Valve

The Graco 563159 Valve, Relief, 1/4 NPT, 2000 PSI is a genuine OEM automatic relief indicator designed for progressive lubrication systems. It helps maintain system operation by relieving pressure when a lubrication line becomes blocked while allowing lubricant to continue reaching the remaining lubrication points. This minimizes unnecessary downtime and helps protect critical equipment components.

Designed with a 1/4 NPT connection and a maximum operating pressure of 2000 PSI (138 bar), the valve is suitable for oil and grease lubrication systems used across industrial and mobile equipment. Once a blockage has been cleared, the valve automatically resumes normal operation without requiring manual reset, simplifying maintenance and improving system reliability.

Key Features

  • Genuine OEM Graco replacement component.
  • 1/4 NPT threaded connection for easy installation.
  • Pressure relief setting of 2000 PSI (138 bar).
  • Automatically indicates blocked lubrication lines.
  • Continues supplying lubricant to unblocked lubrication points.
  • No manual reset required after the blockage is removed.
  • Compatible with both grease and oil lubrication systems.
  • Helps reduce equipment downtime and protects lubrication components.

Technical Specifications

Part Number 563159
Product Type Relief Valve / Automatic Relief Indicator
Connection Size 1/4 NPT
Maximum Pressure 2000 PSI (138 bar)
Compatible Media Oil and Grease
Primary Application Progressive automatic lubrication systems

Frequently Asked Questions

It relieves excess pressure in progressive lubrication systems while identifying blocked lubrication lines, allowing the rest of the system to continue delivering lubricant to unaffected points.

The valve is compatible with MSP, MX, MXP, MJ, and MHH divider valve systems used in Graco automatic lubrication equipment.

No. The automatic relief design resumes normal operation once the blockage has been cleared, eliminating the need for manual reset.

The Graco 563159 is designed for use with both grease and oil in centralized automatic lubrication systems.

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