Xylem 317350 TC-U Upper Valve with Vacuum Breaker

The Xylem-McDonnell & Miller 317350 (TC-U) is an upper valve assembly with a vacuum breaker for Test-N-Check valves. This upper valve is designed for use with model TC-4 Test-N-Check valves, which are essential components in boiler safety systems.

Key Features:

• Includes integrated vacuum breaker
• Allows testing of low water cut-off without draining the boiler
• Compatible with TC-4 Test-N-Check valve systems
• Designed for steam and hot water boiler applications

McDonnell & Miller, a Xylem brand, is a leader in engineering and manufacturing boiler controls, liquid level controls, low-water cutoffs, and flow switches for industrial, commercial, and building applications. This upper valve assembly is a genuine OEM replacement part that ensures reliable performance in critical boiler safety systems.