M3FB20LX/A

Overview of Siemens M3FB20LX-A Diverting 2-Port Refrigerant Valve

The Siemens M3FB20LX-A is a high-quality diverting 2-port refrigerant valve designed for modulating capacity control in refrigeration units and heat recovery systems. It features a DN20 valve size, a PN32 pressure rating, and a kvs value of 5, providing efficient and precise refrigerant flow regulation. The valve supports multiple control signals including DC 0-10 V, 4-20 mA, and phase cut signals, and operates with a 24 VAC power supply.

Key Features

• Designed for modulating capacity control of refrigeration units and heat recovery.
• Diverting 2-port valve with robust construction, hermetically sealed for maximum reliability.
• Valve size DN20 (3/4 inch) with a kvs flow coefficient of 5 for balanced refrigerant flow.
• Pressure rating PN32, suitable for high-pressure refrigerant applications.
• Supports multiple control signals: DC 0-10 V, 4-20 mA, and 0-20 V phase cut.
• Quick positioning time of approximately 1 second for responsive control.
• Wear-free inductive stroke measurement with high resolution (over 1:200).
• Spring return with valve closed position when de-energized ensures fail-safe operation.
• Extended female solder unions enable simple and secure pipe connections.
• Compatible with refrigerants including R22, R134a, R404A, R407C, and R507.

Technical Specs

Applications / Use Case

Ideal for use in refrigerant systems requiring precise modulating capacity control, such as refrigeration units and heat recovery in HVAC applications. Suitable for a variety of refrigerants and designed for reliability and efficiency in demanding conditions.

Siemens provides detailed technical documentation, quality assurance, and support for seamless integration and long-term performance.