The GRACO 237073 is a pressure relief valve designed to prevent system over-pressurization in select GRACO proportioners, pumps, and spray systems. It is constructed with wetted parts typically made from 304 stainless steel, graphite-filled PTFE, UHMWPE (model 24W475), and tungsten carbide with a nickel binder. This valve is intended for professional use only and helps maintain safe operating pressures within GRACO equipment.

Key Features:

• Pressure relief valve
• 237073
• 304 stainless steel, graphite-filled PTFE, UHMWPE (model 24W475), tungsten carbide (nickel binder)
• Operating pressure: 2300–2900 PSI (159–200 bar); Cracking pressure: 3750 PSI (259 bar)
• For use with select GRACO proportioners, pumps, and spray systems
• Spring-loaded needle valve design
• Reliable overpressure protection
• Durable construction for demanding environments
• Low noise level (<70 dBA)
• Ease of maintenance with replaceable seals

Applications:
Used in industrial and professional fluid handling systems to prevent over-pressurization and ensure safe operation of GRACO equipment.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, safety, and equipment longevity.
• Read all warnings and instructions in the manual before installation and use.
• Be familiar with proper control and usage of the equipment.
• Apply lubricant to seals and torque connections as specified: inlet/outlet (1/2 NPT(f)) to 50–60 ft-lb (68–81 Nm), relief port (1/2 NPT(m)) to 13–15 ft-lb (18–20 Nm), and other specified connections to 75–85 ft-lb (102–115 Nm).
• Replace seals if leakage is observed.
• Use a 9/16 in. drag-link socket for installation.
• Regularly inspect for leaks and replace seals as needed.
• Apply anti-seize lubricant to threaded connections during installation and maintenance.
• Keep the valve clean and free from debris.