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Proven corrosion protection for actuators

27th July 2017

Posted By Paul Boughton


A new TÜV certificate confirms that AUMA’s electric actuators have passed the most demanding corrosion protection tests and meet the requirements of EN ISO 12944-6 for corrosivity categories C5-M long (marine, coastal and offshore areas) and C5-I long (industrial areas with high humidity and aggressive atmospheres).

Previous tests had already proved the high corrosion resistance of the advanced two-layer powder coating that AUMA introduced a few years ago.

The latest certificate confirms that the fully assembled actuators, including all non-powder-coated metallic parts such as shafts and screws, withstand corrosion equally well.

“Our actuators are often installed in very harsh environments, especially in tank farms or on offshore platforms.

Excellent corrosion protection is therefore a key concern for us as an actuator manufacturer,” says Gert Wetzel, product manager at AUMA. “We have invested continuously in product and materials design, and we are proud that these challenging tests confirm our products have excellent corrosion protection.”

Key to the impressive corrosion resistance is a two-layer powder coating applied to the individual housing parts before assembly.

The coating also includes the output mounting flange and goes beyond the sealing edge of the joints. This means that the coating remains intact even if the actuator is removed from the valve or if the housing is opened during installation or commissioning.









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