Zoning Parts and Accessories
TAC DuraDrive Linear Actuators are designed to mount directly onto two-way or three-way valves. They provide linear travel to economically operate 1-1/4" to 2" VB-7xxx, 2-1/2" to 5" VB-8xxx, 2-1/2" to 4" VB-931x, and discontinued 1-1/2" to 4" VB-9xxx valves in hot water, chilled water, and steam applications up to 366°F (186°C) fluid temperature. The linear spring return actuators provide either two position, floating or proportional modulation control (depending on model selection) of valves in HVAC systems.
DuraDrive Direct Coupled Actuators are designed to be used in both damper and valve control applications. The following general instructions are for damper applications, refer to the Applicable Literature table for valve literature. The MS40-717X series actuators are over the shaft spring return actuators compatible with 2 to 10 Vdc or 4 to 20 mAdc1 control signals.