The GRACO 17J817 is a hex reducer nipple fitting designed to connect and adapt hoses of different sizes within GRACO equipment. It is typically constructed from durable metal and is used as a coupler for Xtreme Duty hoses on models such as the GH933 250. Its primary function is to ensure a secure and leak-free transition between 3/4" and 1/2" NPSM hose connections. Key Features: Reducer nipple fitting 3/4" NPSM x 1/2" NPSM Compatible with GRACO Xtreme Duty hoses and GH933 250 equipment Hex design for easy installation and removal Durable construction for reliable performance Designed for use in demanding industrial environments Applications:Used in industrial fluid handling systems, particularly for connecting and adapting hoses in GRACO spray equipment and lubrication systems. Installation Notes: Using genuine GRACO parts ensures optimal fit, performance, and safety in fluid handling systems. Ensure both ends of the fitting are clean and free from debris before installation Use appropriate tools to tighten the hex fitting securely Check for leaks after installation and during regular maintenance