The Arca Ecotrol from Valve & Automation features a neat and well thought-through design.
It takes only seconds to install/remove the valve positioner. In one step the outlet actuating pressure and the feedback mechanism are all connected, without the need to fiddle with any other parts. The rugged positioner features a tubeless mounting design. The short mounting bracket results in a rigid arrangement that does a lot to ensure accurate operation of the positioner. Safety considerations for the positioner (and for those near it) have been effectively met by encasing the positioner between the posts of the yoke. The routing of instrument air is achieved by means of an integral channel that is included in the yoke casting - simple, neat and robust.
How tubeless operation was achieved
To install redundant safety systems with separate inlet signal in safety-relevant process areas, an additional solenoid valve can be plugged in between the positioner outlet and the actuator inlet. The positioner signal y will be transmitted through the pressure gauge set to the solenoid valve provided with a modified NAMUR adaptation for a three-way solenoid valve.
An energising safety signal to the solenoid valve will pass through routes one and two of the solenoid valve, via the yoke to the actuator. In the case of a de-energised safety signal, independent of the control signal of the positioner, the instrument air of the actuator will be exhausted through routes two and three, moving the control valve to its safety end position.
Ease of maintenance
The major benefit of this construction is the tubeless connection of the actuator with the positioner and solenoid valve. This is what enables the positioner and solenoid valve to be interchanged quickly, within seconds, while also considerably reducing the space required.
Hygienic processing with butterfly valves and Bürkert control technology Bürkert South Africa
Valves, Actuators & Pump Control
Among the standout technologies shaping modern hygienic processing environments are hygienic butterfly valves, especially when seamlessly integrated with Bürkert actuators, control tops and positioners.
Read more...Cryogenic valve limits leakage and energy loss
Valves, Actuators & Pump Control
Emerson has introduced the Fisher IC2 cryogenic top-entry control valve, ideal for cold box applications in air separation units, hydrogen liquefaction and LNG production.
Read more...Internationally engineered valves support uptime in tough conditions Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG’s Fluid Technology division works closely with industry in sub-Saharan Africa to ensure that all valves, strainers and flow control equipment supplied meet the exact requirements of every application and also conform with stringent industry standards.
Read more...Allmech introduces new water treatment solutions
Valves, Actuators & Pump Control
Allmech has announced a series of product updates aimed at improving reliability, efficiency and system simplicity in high-volume and high-hardness water environments.
Read more...Duplex valve improves continuous production at Gauteng manufacturing facility
Valves, Actuators & Pump Control
In a recent installation at a Gauteng-based manufacturer of household and personal care products, Allmech provided a tailored water treatment solution to ensure a consistent supply of soft water for steam generation, an essential element in the client’s 24/7 production cycle.
Read more...Developing solutions for SA’s wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps has a proud global legacy in the development of self-priming pump technology, which reflects decades of engineering innovation and application expertise. Building on this foundation, KSB’s AU series has extended the company’s self-priming expertise into screened wastewater handling, which meets the growing needs of municipal and industrial sectors worldwide.
Read more...Helping to solve wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps and Valves is doubling its efforts to help government and municipalities find practical and technical solutions to the growing wastewater challenges gripping large parts of the country.
Read more...Ultra-durable stainless steel submersible pumps
Valves, Actuators & Pump Control
KSB Pumps and Valves has launched a rugged stainless-steel submersible pump range designed for deep borehole use and other demanding freshwater and saline pumping applications.
Read more...Industrial valve solutions Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG’s Fluid Technology division supplies and supports an extensive range of components for fluid technology systems. These include valves, hydraulic hoses and fittings, accumulators, cylinders, heat exchangers, hydraulic motors and hydraulic plumbing, as well as pumps and reservoir accessories.
Read more...New wastewater pump for local municipalities and industries
Valves, Actuators & Pump Control
The latest wastewater pump from KSB Pumps and Valves is making waves in the industry due to a host of new features that provide users with an ultra-durable long service pump with fewer blockages and a lower maintenance requirement than traditional pumps.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version