The GRACO Hex Nipple Fitting (21782-01) is a threaded connector designed for joining or extending fluid lines within GRACO equipment. It is typically constructed from durable metal (exact material not specified for this part number, but similar GRACO fittings are often carbon steel). Its intended use is to provide a secure, leak-resistant connection between hoses or pipes in high-pressure fluid transfer systems.

Key Features:

• Hex Nipple Fitting
• 1/2 NPTM x 4"
• Metal (likely carbon steel, based on similar GRACO fittings)
• Compatible with GRACO equipment requiring 1/2" NPT male threaded connections
• Hex design for easy installation and removal with standard tools
• Durable construction for reliable performance in demanding environments
• Threaded ends for secure, leak-resistant connections

Applications:
Used in fluid transfer systems for lubrication, hydraulic, or spray applications within industrial, mining, and agricultural equipment.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and maintains equipment warranty and safety standards.
• Ensure threads are clean and free of debris before installation
• Use appropriate thread sealant or tape for leak prevention
• Tighten securely with a wrench, but avoid over-tightening to prevent thread damage
• Regularly inspect for leaks or wear
• Replace if threads are damaged or if leaks persist