The GRACO 166443 is a hex nipple fitting designed for use in GRACO fluid handling equipment. It is typically constructed from metal (exact material not specified in available sources) and serves as a reducing adapter to connect different pipe sizes within GRACO pump systems.

Key Features:

• Hex nipple fitting
• 3/4 x 1/2 NPT
• Compatible with GRACO pump systems requiring a 3/4 x 1/2 NPT reducing nipple
• Hex design for easy installation and removal with standard tools
• Reduces from 3/4 inch to 1/2 inch NPT
• Reliable connection for fluid transfer

Applications:
Used in GRACO pump assemblies for fluid transfer applications, such as lubrication, paint, or other industrial fluids.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, performance, and safety in fluid handling systems.
• Ensure threads are clean and free of debris before installation
• Apply appropriate thread sealant as recommended by GRACO
• Tighten securely using a wrench on the hex portion to avoid damage to the fitting
• Check for leaks after installation and during system operation
• Regularly inspect for signs of wear or leakage
• Replace if damaged or if leaks are detected
• Follow GRACO equipment maintenance schedules