Explosion-proof version of underwater actuator
Auma Riester
The new explosion-proof version this company’s underwater actuator (photo) features innovative sealing, non-intrusive parameterization and separately mounted controls. These actuators are suited for continuous underwater use, thus considerably extending the scope of application of electric actuators in water supply systems, hydropower plants, civil engineering constructions for water applications and specific underwater applications. The new explosion-proof version is available for sewers and sewage pits, where fermentation gases generate a risk of potentially explosive atmospheres during dry periods. A universal sealing system combined with comprehensive corrosion protection qualifies these actuators for underwater use. SA/SAEx actuators in sizes 7.2 to 16.2 for continuous underwater use are qualified for up to 15 m head of water, with higher heads of water available on request. Actuators in the explosion-proof version meet ATEX requirements. Hall C2, Stand 141/240 — Auma Riester GmbH & Co. KG, Müllheim, Germany