Rotork actuators for metering pump sets

A metering pump set equipped with three Series 1000 actuators and four IQPro electric actuators from Rotork

Rotork’s activities with metering pump sets continue to grow as manufacturers incorporate Rotork electric valve actuators within standard products and packaged plants.

The metering pump is a positive displacement chemical dosing device with the ability to automatically vary its dosing capacity as process conditions dictate. The pump features a high level of repetitive accuracy and is capable of pumping a wide range of chemicals including corrosives or viscous liquids and slurries in hazardous environments including oil and gas installations, refineries and chemical processing plants. The pumping action is operated by a reciprocating piston which is either in direct contact with the process fluid or shielded from the fluid by a diaphragm.

Rotork multi-turn electric actuators precisely control the stroke of the pump, typically operating from a 4 -20mA control signal. The 1000 Series actuator from Rotork Process Controls is well suited to this application, featuring a compact mechanical design, 100% continuous modulating performance with high repeatability and resolution, manual override and a simple set-up programme.

The Rotork IQPro electric actuator is also used for this application. In addition to accurate pump stroking capabilities, the IQPro offers the benefits of non-intrusive set up and commissioning, data logging and valve diagnostics utilising Rotork’s popular IQ-Insight software.
The compact dimensions of Rotork electric actuator designs are a further assistance to the products’ adoption in metering pump applications, where the space available between the piston housings is often restricted.

Rotork Controls, Tel: +44 1225 733200
Website: www.rotork.com

Published in Valve User Magazine Issue 16


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