Description
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






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