Maxon 200SMA11AA11BB22A0 2 Inch Automatic Gas Shutoff Valve with VOS2/VCS2 Switches

The Maxon 200SMA11AA11BB22A0 is a normally closed electromechanical safety shutoff valve designed for natural gas service with automatic reset functionality. This industrial-grade valve is engineered for reliable combustion control applications in commercial and industrial heating systems.

Key Specifications:

• 2-inch (DN50) valve size with NPT threaded connection
• Flow coefficient (Cv) of 86 for excellent flow capacity
• Maximum operating pressure differential: 70 PSIG
• 115 VAC/60 Hz actuator motor with 6-second timing
• Two proof-of-open switches and two proof-of-closure switches (VOS2/VCS2)
• NEMA 4 enclosure rating for general purpose applications

Construction Features:

• Durable cast iron body construction
• 400 series stainless steel seat for corrosion resistance
• Hardened ductile iron disc
• PEEK follower ring for precision operation
• Buna-N O-rings and bumper for reliable sealing
• Right top assembly position

This valve provides critical safety functionality by automatically shutting off gas flow when power is interrupted or control signals are lost. The dual proof-of-position switches allow for monitoring and verification of valve status in automated control systems. Ideal for boilers, furnaces, ovens, and other industrial combustion equipment.