Danfoss 065B-8963 ESBE Type F 4" 3-Way Flanged Mixing Valve 265 Cv Cast Iron

The Danfoss 065B-8963 is a 4-inch ESBE Type F 3-way rotary valve designed for precision mixing or diverting applications in commercial and industrial hydronic heating and cooling systems. Constructed from high-performing cast iron with flanged connections, this valve provides reliable flow control for water or glycol mixtures in closed-loop HVAC applications.

Key Features:

• 265 Cv Flow Coefficient: High-capacity flow rating for large commercial systems
• 4-Inch Flanged Connections: ANSI/DIN flanged ports for secure, leak-resistant installation
• Cast Iron Construction: Durable valve body with brass slider and stainless steel stem components
• Rotary Design: Provides flexibility in field piping layouts and installation configurations
• Reversible Position Indicator: Valve position face plate printed on both sides, can be rotated for optimal viewing angle
• Manual or Automated Operation: Compatible with ESBE Series 90, ARC, and ARD motorized actuators for electronic temperature control
• Wide Application Range: Suitable for 100% water or glycol mixtures up to 50% glycol concentration

Technical Specifications:

• Maximum Static Pressure: 125 PSI (6 bar)
• Maximum Temperature: 230°F (110°C)
• Mixing Leakage: Maximum 1.5%
• Connection Type: Flanged (ANSI/DIN standard)

This valve is ideal for commercial boiler systems, chiller loops, radiant heating distribution, and multi-zone temperature control applications. The rotary valve design allows any port to serve as supply or return, offering maximum installation versatility. When paired with an electronic actuator and controller, it provides precise proportional mixing control to maintain consistent system temperatures.