Xylem 349400 Black Y Assembly for Boiler Quick Hook-Up Fittings

The Xylem 349400 (Model SA159-17) is a black "Y" assembly component designed for use with McDonnell & Miller boiler control systems. This essential replacement part is a key component of the complete MA-159 and MA-259 quick hook-up fitting assemblies.

Compatible Models:

• Model 42A and 42S-A low water cut-offs
• Series 47 and 47-2 water feeders
• Model 64A and 64-A low water cut-offs

Key Features:

• Part of quick hook-up fittings that install directly into gauge glass tappings on boilers
• Enables gauge glass mounting onto control units
• Manufactured by McDonnell & Miller, a Xylem brand known for quality boiler controls
• Designed for steam and hot water boiler applications
• Used in industrial, commercial, and building system applications

McDonnell & Miller, a division of Xylem, is a leading manufacturer of boiler controls, liquid level controls, low-water cutoffs, and flow switches. This genuine OEM replacement part ensures reliable performance and proper fit for your boiler control system.