Maxon 300CMA11BA11BB21A0 Gas Valve

The Maxon 300CMA11BA11BB21A0 Gas Valve is a 3-inch electromechanical safety shut-off valve engineered for critical fuel line isolation in industrial headers and burner trains. Built with a rugged cast iron body and ANSI flanged connections (PN20), this normally closed assembly provides high-capacity flow with a CP body construction designed to minimize pressure drop. The valve utilizes an automatic reset actuator with a 6-second motor timing and a rapid 115Vac 60Hz solenoid for closure in less than one second upon power interruption. Integrated VOS1/VCS1 switches provide verified proof of closure and opening, essential for modern PLC-controlled safety interlock systems. Sealed with Buna body O-rings and bumpers, it maintains a Class VI seat leakage rating per FCI 70-2, ensuring reliable performance in general-purpose gas service. This NEMA 4 rated unit is specifically designed for top-tier reliability in demanding combustion environments where industrial gas safety and precise motorized gas valve operation are non-negotiable.

• Superior Sealing Action: Features long-lasting metal-to-metal seating and Buna-N elastomers to prevent gas leak-by.
• Rapid Safety Closure: Heavy-duty internal springs ensure the valve snaps shut in less than one second when de-energized.
• Monitoring & Feedback: Factory-installed VOS1 (Valve Open Switch) and VCS1 (Valve Closed Switch) enable remote status supervision.
• Weatherproof Durability: The NEMA 4 enclosure protects internal electrical components against dust and water ingress in non-hazardous areas.
• Maintenance-Free Bonnet: The unique design eliminates the need for packing adjustments, reducing long-term field service requirements.

What is the maximum operating pressure for this 3-inch Maxon valve?
The Maxon 300CMA series is rated for a maximum operating pressure differential (MOPD) of up to 40 PSIG, though specific fuel types may impact rated capacity.

Can the top actuator be rotated for better clearance?
Yes, the actuator assembly is field-rotatable in 90-degree increments, allowing for flexible positioning of the conduit entries relative to the gas flow.

What does Internal Trim Package 1 signify?
Trim Package 1 indicates a standard internal construction suitable for general-purpose clean fuel gases like natural gas, propane, and butane.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.