In many applications where the environment is corrosive from production or other plant pollutants, it is necessary to protect the actuator spring chambers and internals from sucking in external air during the spring stroke.

The new Namur Breather Block prevents suction of external air into the spring chambers.

This is achieved by redirecting the instrumentation air that is supplied to the actuator’s spring chamber during the spring stroke thus preventing external air from being sucked in.

The Breather Block exhaust port has a filter which prevents permeation and ingress of foreign substances and can also be fitted with a speed controller.