Keywords
Citation
(2001), "Tough yet lightweight actuators resist aggressive media", Anti-Corrosion Methods and Materials, Vol. 48 No. 2. https://doi.org/10.1108/acmm.2001.12848bad.009
Publisher
:Emerald Group Publishing Limited
Copyright © 2001, MCB UP Limited
Tough yet lightweight actuators resist aggressive media
Tough yet lightweight actuators resist aggressive media
Keywords: Alpha Controls, Actuators
Certain liquids handling applications demand light-weight yet corrosion resistant valves and actuators, for example, brewing, water treatment, marine or similar underwater applications. Alpha Controls considers that, while stainless steel might be the preferred material choice, the cost and weight of components made from such a material may be prohibitive in some situations.
To meet this demand Alpha Controls reports that it has introduced a new range of polyamide pneumatic actuators which, they believe, provide a high degree of resistance to corrosive and other aggressive media and are designed specifically for use with composite valves.
The Prisma range of actuators (Plate 5), which can be operated by air, water or non-aggressive fluid at pressures to 8 bar, claim excellent corrosion resistance, yet are said to be a tighter and lower cost option compared to stainless steel.
These actuators are reported to be available as double acting and spring return models from 17Nm, up to 167Nm, constant torque and can operate within a temperature range of –32° to +90°. They are manufactured to meet ISO 5211, DIN 3337, VDE 3845 and NAMUR standards.
Plate 5 Alpha
Controls' tough, yet light-weight actuators resist aggressive media
To ensure maximum operational flexibility the actuators can be equipped with limit switches, solenoid valves, positioners, security hand wheels and slip clutched gear boxes. In addition a wide range of brackets and connection pieces enables the actuators to be mounted on to the majority of ball and butterfly valves.
Typical applications for Prisma actuators include water treatment, brewing, pulp and paper, textiles, refineries, irrigation, agrochemical industries or wherever light-weight yet tough and reliable components are required.
Details available from: Alpha Controls. Tel: +44 (0)1942 525833; Fax: +44 (0)1942 523413; E-mail: technicalsales@ alphacontrols.co.uk