The GRACO 556403 is a reducing bushing designed to connect pipes or fittings of different sizes within GRACO automatic lubrication equipment. It is typically constructed from steel and serves to adapt a 3/8 inch (9.5 mm) NPT female thread to a 1/8 inch (3.2 mm) NPT female thread, ensuring compatibility and secure flow in lubrication systems.

Key Features:

• Reducer (Bushing)
• 3/8 inch (9.5 mm) NPT x 1/8 inch (3.2 mm) NPT Female
• Steel
• Compatible with GRACO automatic lubrication systems and standard NPT threaded connections
• Threaded connection for secure fit
• Robust steel construction for durability
• Designed for use in demanding industrial environments

Applications:
Used in automatic lubrication systems for industries such as construction, mining, energy, agriculture, and transportation to ensure proper fitting and flow between components of different sizes.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with GRACO equipment, reducing the risk of leaks or system failures.
• Ensure threads are clean and free from debris before installation
• Apply appropriate thread sealant to prevent leaks
• Hand-tighten before using a wrench to avoid over-tightening and thread damage
• Check for leaks after installation and during routine maintenance