Valley Tool 1405-S Crank Arm

The Valley Tool 1405-S is a high-performance short crank arm engineered specifically for 1/2" damper shafts in commercial and industrial HVAC contexts. This heavy-duty linkage component provides a reliable mechanical connection between the actuator motor and the damper assembly, ensuring precise airflow control. Built with ROHS-compliant bright zinc plating, the 1405-S offers superior corrosion resistance in demanding air handling environments. This unit serves as a direct cross-reference and 1405-S is identical to 26026B, making it a critical stock item for technicians maintaining Moduflow dampers and other damper linkage motion control assemblies. Its compact profile is designed for tight-clearance installations where a standard long arm would interfere with mechanical surrounds, providing a 0.5-inch shaft housing with a positive clamping action to prevent slippage during high-torque actuation cycles. Whether you are performing a field replacement or a new system commissioning, this 1405-S short crank arm ensures consistent, repeatable damper positioning.

• Precise Compatibility: Engineered for a standard 1/2 inch shaft, ensuring a secure fit without the need for additional shims or field modifications.
• Direct Cross-Reference: Fully interchangeable with the 26026B part number for rapid replacement in existing Honeywell or similar systems.
• Durable Construction: Features a zinc-plated finish to withstand humidity and environmental stressors common in ductwork environments.
• Optimized Clearance: The short arm design allows for effective installation in compact actuator cabinets and restricted damper sections.
• Reliable Torque Transfer: Provides positive clamping to maintain accurate linkage motion control over thousands of cycles.

Is the 1405-S a direct replacement for the 26026B?
Yes, the Valley Tool 1405-S is functionally identical to the 26026B, maintaining the same shaft diameter and stroke geometry required for standard HVAC damper actuators.

Can this crank arm be used on a 3/8" shaft?
No, this specific model is bored exclusively for a 1/2 inch shaft. For 3/8" applications, you would require the Valley Tool 1403-S model.

What is the primary application for a "short" crank arm versus a "long" version?
The short crank arm is utilized when a smaller radius of motion is needed or when the installation footprint requires minimal clearance. It is the preferred choice for 1/2" shaft damper setups in confined mechanical spaces.

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.