The HS Series butterfly valve and associated SY actuator are designed for optimal shut-off and proportional control. The HS Series is available in sizes ranging from 2 to 30 in., and the SY Series is available with 24, 110, or 220 VAC supply. The valve/actuator combination is suited for applications such as chiller isolation, cooling tower isolation, bypass, changeover systems, and large air handler coil control.

- Belimo Aircontrols (USA), Inc.
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