Belimo Z2050Q+J+CQB24-SRR 1/2″ 2-Way Zone Valve Assembly with Spring-Return Actuator

Description

Belimo Z2050Q+J+CQB24-SRR — 1/2″ 2-Way Zone Valve Assembly

The Belimo Z2050Q+J+CQB24-SRR is a factory-matched, pre-assembled zone valve combination designed for precise hydronic and HVAC zone control. It pairs the Z2050Q ½” 2-way characterized control valve (CCV) with the CQB24-SRR spring-return actuator and union connector set (J), delivering a complete, installation-ready solution for fan coil units, air handling units, and terminal equipment.

Valve — Z2050Q

• Body size: 1/2″ (DN 15)
• 2-way, normally closed configuration
• Characterized control valve (CCV) for accurate flow regulation
• Brass valve body construction for durability and corrosion resistance
• Union connections (J connector set included) for easy installation and serviceability
• Suitable for chilled water, hot water, and 50% glycol solutions

Actuator — CQB24-SRR

• Power supply: 24 VAC/DC
• Spring-return (fail-safe) operation — valve returns to closed position on power loss
• On/off control signal
• SPDT auxiliary switch (R) for end-position feedback and system integration
• Compact, direct-coupled design — no crank arm or linkage required
• Manual override function for commissioning and maintenance
• UL listed; CE marked

Key Benefits

• Pre-assembled combination reduces installation time and eliminates compatibility guesswork
• Spring-return fail-safe closes the valve on power loss, protecting the system
• SPDT auxiliary switch enables end-position feedback to building automation or zone control panels
• Union connector set (J) allows the valve body to be removed for service without disturbing the piping
• Ideal for residential and light commercial hydronic zone control applications

Typical Applications

• Fan coil unit (FCU) control
• Hydronic zone heating and cooling systems
• Air handling unit (AHU) coil control
• Terminal unit on/off flow control