Maxon 300CMA11AA11BB22A0 Gas Safety Shutoff Valve with Switches - 3 VOS2/VCS2 115V

The Maxon 300CMA11AA11BB22A0 is a professional-grade electromechanical gas safety shutoff valve designed for commercial and industrial combustion applications. This 3-inch normally closed valve features automatic reset functionality with a powerful closing spring that provides closure in less than one second for reliable, long-life operation.

Key Specifications:

• 3-inch (DN80) valve size with ANSI threaded connection (NPT)
• CP (compact profile) flow capacity with Cv of 423
• 115V AC 60Hz solenoid and motor voltage
• 6-second motor timing for automatic reset
• Maximum operating pressure differential: 40 PSIG
• Cast iron body construction with Buna O-rings and bumper
• Internal trim package 1 for natural gas service

Safety and Control Features:

• VOS2 (Valve Open Switch) and VCS2 (Valve Closed Switch) auxiliary switches for position indication and safety interlocks
• NEMA 4 enclosure rating for weather-resistant protection
• General purpose area classification suitable for most applications
• Meets FCI 70-2 Class VI seat leakage standards
• FM, CSA, UL, and CE approved
• Top assembly position: Right (field-rotatable in 90° increments)

Operating Parameters:

• Ambient temperature range: -20°F to 140°F (-28°C to 60°C)
• Fluid temperature range: -20°F to 140°F
• Normally closed shut-off valve (closes when de-energized)
• Solenoid current: 0.32 amps
• Motor current: 1.7 amps

This Maxon valve is ideal for burner management systems, boiler applications, and industrial heating equipment where fast-acting, reliable gas shutoff is required. The automatic reset feature allows the valve to return to service quickly after safety trips, while the dual auxiliary switches enable integration with sophisticated safety control circuits and position monitoring systems.