Belimo ZR-EXT-01 Shaft Extension

The Belimo ZR-EXT-01 Shaft Extension is a critical field-installed component designed specifically for Belimo CCV (Characterized Control Valves). This valve shaft extension provides an additional 6.7 inches (170 mm) of clearance, allowing actuators to be mounted away from pipe insulation to prevent condensation buildup and ensure accessibility in tight mechanical spaces. Engineering compatibility focuses on B2 and B3 series valves, serving as the direct CCV-EXT-KIT replacement. The rugged construction maintains torque integrity between the rotary actuator and the valve stem, ensuring precise flow control without mechanical hysteresis. For contractors managing HVAC valve automation, this extension is essential when working with oversized insulation or deep-set piping runs. It simplifies the installation of Belimo non-spring return actuators and spring return units by providing a stable, extended interface that meets rigorous commercial mechanical standards.

• Precise Fitment: Engineered specifically for Belimo CCV applications, ensuring zero-slip operation.
• Extended Clearance: Adds 170 mm of length to accommodate high-thickness thermal insulation.
• Legacy Compatibility: Functions as the updated technical successor to the CCV-EXT-KIT.
• Durable Construction: Built to withstand high-torque cycles in demanding commercial HVAC systems.
• Field Adaptation: Facilitates easier actuator serviceability and manual override access in restricted clearances.

Is the ZR-EXT-01 compatible with all Belimo rotary actuators?
This extension is designed for use with specific series actuators typically paired with Characterized Control Valves. Verify the stem interface dimensions before field installation.

Can this extension be cut to a shorter length in the field?
Modification is not recommended, as the factory-machined ends ensure the structural integrity and torque transfer required for precise HVAC valve automation.

How does this impact the mounting of the weather shield?
Adding a valve shaft extension may require an offset or larger enclosure depending on the specific actuator model and environmental requirements.

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.