The GRACO 77X540 is a vent valve kit designed for use with 24 VDC electric pumps, specifically the Dyna-Star HP or HF series. It is constructed for professional use and is intended to reduce system pressure and allow injectors to reset within GRACO automatic lubrication systems. The kit includes all necessary hardware for installation and is typically made from durable materials suitable for industrial environments.

Key Features:

• Vent Valve Kit
• 77X540
• Dyna-Star HP and HF 24 VDC electric pumps
• Reduces system pressure to allow injector reset
• Includes all necessary mounting hardware
• Designed for easy installation and maintenance
• Suitable for professional and industrial use

Applications:
Used in automatic lubrication systems to ensure proper injector reset and system pressure management, particularly in industrial and heavy-duty applications.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the lubrication system.
• Install vent valve to pump surface using the included cap screws (torque to 17-19 ft-lbs / 23-26 N.m)
• Ensure o-rings remain in place during installation
• Connect lubrication line to the outlet port marked '0'
• Install plug or inlet plumbing to the inlet port marked '1' as required
• Connect cable to valve cartridge and solenoid control device (Deutsch DT-04-2P connector)
• Solenoid inputs are not polarity dependent; voltage can be applied in either direction
• Activate solenoid when pump is running
• Test system after installation to ensure proper operation