Siemens Building Technology MXG461.20-5.0U Valve

The Siemens MXG461.20-5.0U is a high-performance modulating magnetic control valve engineered for precision in chilled water and low-pressure hot water HVAC applications. This 3/4" NPT magnetic valve features a 5.9 Cv rating and provides exceptionally fast positioning times of less than 1 or 2 seconds, making it ideal for systems requiring rapid response to load changes. Built with a magnetic actuator that incorporates an integrated electronic module, the assembly offers a high-resolution stroke of 1:1000 for industry-leading accuracy. This Siemens HVAC valve supports versatile control signals including 0...10 Vdc, 2...10 Vdc, and 4...20 mA, with a field-selectable flow characteristic (linear or equal-percentage). Designed as a mixing valve, it conveniently includes a blanking flange and NPT union fittings to allow for straight-through (2-way) configuration. The robust, low-friction design and wear-free inductive stroke measurement ensure reliable operation in closed-circuit hydronic systems without the need for routine recalibration after initial setup.

Key Benefits

• Instantaneous Modulation: The magnetic actuator technology delivers positioning speeds of ?2 seconds for superior temperature stability.
• High Resolution Control: Precise 1:1000 resolution ensures exact fluid delivery even in low-demand scenarios.
• Multi-Signal Compatibility: Field-adjustable DIP switches allow for seamless integration with varied Siemens Building Technology and third-party controllers.
• Fail-Safe Security: Integrated spring-return functionality ensures ports A to AB close automatically upon power loss.
• Maintenance-Free Design: Wear-free inductive measurements and a sturdy mechanical build eliminate the need for standard maintenance intervals.

Common Questions

Can this valve be used in a diverting configuration?
No, the MXG461.20-5.0U is specifically designed for mixing or through-port applications. It should not be installed as a diverting valve.

How do I change the flow characteristic?
The flow characteristic (linear vs. equal-percentage) is selectable via internal DIP switches located within the electronics module housing.

Is manual operation possible during a power failure?
Yes, the valve includes a manual override handwheel. Pressing the wheel in and turning it clockwise allows for manual positioning up to approximately 90% stroke.

This item is not eligible for free shipping.

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.