The GRACO 258299 is a single ball check valve constructed from steel, designed to allow fluid flow in one direction while preventing backflow. It is intended for use in high-pressure fluid handling systems within GRACO equipment, ensuring reliable operation and system integrity.

Key Features:

• Check Valve
• 1/8 in BSPP
• Steel
• Maximum working pressure: 5,000 psi (345 bar); Nominal cracking pressure: 35 psi (2.41 bar)
• Compatible with GRACO equipment requiring 1/8 in BSPP check valves
• Single ball design for reliable sealing
• High-pressure tolerance for demanding applications
• Durable steel construction for long service life
• Ease of maintenance due to simple, robust design

Applications:
Used in high-pressure fluid handling systems, such as lubrication, paint, and chemical transfer equipment, where prevention of backflow and reliable sealing are critical.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety of the equipment. Non-genuine parts may compromise system integrity and void warranties.
• Ensure the valve is installed in the correct flow direction as indicated by the arrow or markings on the valve body
• Use appropriate thread sealant for BSPP threads to prevent leaks
• Tighten to recommended torque specifications to avoid damage
• Inspect for leaks and proper function after installation
• Regularly inspect the valve for signs of wear or damage
• Replace the valve if it fails to seal properly or shows signs of leakage
• Clean the valve and surrounding area during routine maintenance to prevent contamination