The GRACO 21972-00 is a threaded nipple fitting designed to connect two sections of pipe or hose with 1/2 inch National Pipe Thread (NPT) and 1/2 inch National Pipe Straight Mechanical (NPSM) connections. Its intended use is to provide a secure, leak-resistant connection within GRACO fluid handling equipment. Material is not specified in available documentation.

Key Features:

• Nipple
• 1/2NPT x 1/2NPSM, 3" Length
• Compatible with GRACO equipment requiring 1/2 inch NPT and NPSM connections
• Threaded for secure connection
• Standardized sizing for easy integration

Applications:
Used in fluid transfer and lubrication systems where reliable pipe or hose connections are required, such as in industrial, mining, or agricultural equipment.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance within GRACO systems.
• Ensure threads are clean and undamaged before installation
• Use appropriate thread sealant or tape for leak prevention
• Hand-tighten and then use a wrench for final tightening, avoiding over-torquing
• Regularly inspect for leaks or thread wear
• Replace if damaged or showing signs of corrosion