Valve actuation upgrade complete

Rotork IQ and IQT range intelligent electric valve actuators have been installed as part of a multi-million pound upgrade and modernisation programme awarded to Interserve Project Services at one of the Severn Trent Water Treatment Works. Rotork’s Site Services Division has fitted a total of 136 actuators to existing valves on Rapid Gravity (RGF) and Granulated Activated Carbon (GAC) filter beds. Each of the 14 RGF and 20 GAC filter beds at the water treatment works has been retrofitted with Rotork IQ multi-turn actuators on 500 or 600mm inlet and outlet penstocks and IQT direct drive quarter-turn actuators on 200mm air scourer butterfly valves. Rotork Site Services’ scope of supply encompassed an initial valve survey, the design and manufacture of new screwed valve stems and pedestals for the penstocks and adaptors for the butterfly valves, actuator sizing, installation and commissioning. Butterfly valve adaptors were sourced from Valvekits, the Rotork Group’s dedicated valve accessory company. Rotork IQ/IQT actuators feature “non-intrusive” commissioning and data interrogation by means of a bi-directional infra-red link to a hand held setting tool. A data logger in each actuator stores historical valve operating data including torque profiles which can be downloaded and analysed using Rotork IQ-Insight software to minimise the requirement for routine valve maintenance.
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