The GRACO 257746 Fitting, Vacuum Tree Assy is a connection kit designed to add vacuum capability to GRACO tank feed systems. It is typically constructed from robust materials suitable for industrial environments and is intended for use with heated 75-liter tanks to facilitate material de-gassing and efficient material supply in plural-component proportioning systems.

Key Features:

• Vacuum Tree Assembly
• 257746
• Maximum Working Pressure: 100 psi (0.7 MPa, 7.0 bar)
• For use with GRACO HFR™ and HVR™ plural-component proportioners and heated 75-liter tanks
• Facilitates vacuum de-gassing of material in tanks
• Includes ball valves for controlled vacuum application
• Supports safe and efficient operation of tank feed systems
• Designed for professional use only, not for explosive atmospheres

Applications:
Used in industrial and commercial settings for supplying material to GRACO HFR™ and HVR™ plural-component proportioners, particularly where vacuum de-gassing of materials is required for optimal system performance.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and safety in operation.
• Follow all safety instructions and warnings in the equipment manual
• Attach vacuum pump to the bottom ball valve of the vacuum tree manifold
• Open the ball valve before turning on the vacuum pump
• Close the bottom ball valve before turning off the vacuum pump
• Always open the top ball valve after de-gassing to prevent pump cavitation and tank collapse
• Refer to the HFR or HVR Setup-Operation manual for system startup and operation instructions
• Regularly inspect for leaks and wear
• Ensure all valves operate smoothly
• Keep the assembly clean and free from material buildup