Motorised on/off valve
Selection of Control Valves in Variable Flow Systems (BG 51/2014) written by Chris Parsloe and published by BSRIA in June 2014, defines a motorised on/off valve (MV) as: ‘An actuated ball or butterfly valve, the opening of which, in normal operation, is either fully open or fully closed.’
Typical applications include on/off control for individual terminal devices, or zones with multiple terminal devices.
--BSRIA
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