Maxon 250CMA11AA11BB22A0 Automatic Gas Shut-Off Valve 2.5 Inch 115V

The Maxon 250CMA11AA11BB22A0 is an electro-mechanical automatic gas safety shut-off valve designed for commercial and industrial burner applications. This normally closed valve provides reliable gas line control with fast-acting safety features for natural gas service.

Key Features:

• 2.5 inch NPT threaded connection
• Normally closed operation for fail-safe protection
• 115VAC 60Hz solenoid and motor voltage
• 6 second motor timing for automatic opening
• Closure in less than 1 second with powerful closing spring
• Cast iron body construction with internal trim package #1
• Buna O-ring seals and bumper for reliable sealing
• NEMA 4 enclosure rating for environmental protection
• VOS2/VCS2 auxiliary position switches included
• General purpose classification for standard applications
• Flow coefficient (Cv) of 304
• Maximum operating pressure differential (MOPD) of 50 psig
• Ambient and gas temperature range: -20°F to 140°F

This valve features metal-to-metal seating for long-lasting performance and meets FCI 70-2 Class VI seat leakage standards. The unique bonnet design eliminates packing adjustments, reducing maintenance requirements. Factory Mutual, CSA, UL, and CE approved. The valve automatically returns to the closed position instantly with any interruption in electric power, providing critical safety protection in burner control systems.