The GRACO 121474 is a high capacity fill coupler designed for use with G-Series pumps. It is constructed from steel with a zinc finish, intended for transferring oil and grease in on-road and off-road vehicle and equipment lubrication systems.

Key Features:

• Coupling
• 1/4 inch QD Female by 1/4 inch NPT Female
• Steel with zinc coating
• Maximum working pressure: 3700 psi (259 bar, 25900 kPa)
• For use with G-Series Pumps; compatible with oil and grease
• Quick-disconnect and threaded connection types
• High capacity for efficient filling
• Robust steel construction for durability
• Zinc finish for corrosion resistance

Applications:
On-road vehicles, off-road equipment, and industrial lubrication systems requiring high-capacity oil or grease transfer

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance within GRACO lubrication systems.
• Ensure threads are clean and undamaged before installation
• Use appropriate thread sealant for NPT connections
• Verify compatibility with G-Series pumps and intended fluid
• Regularly inspect for wear or damage and replace as needed
• Keep coupler and connections clean and free of debris
• Periodically check for leaks or pressure loss
• Replace worn or damaged components promptly