Cowan Dynamics
This article has been reviewed by Cowan Dynamics Application Engineering team. Contact Us and our application engineers will assist you with your application.
In mining, valve actuators must withstand a relentless mix of vibration, dust, and corrosive materials. In the Spring edition of VALVE Magazine, brought to you by the Valve Manufacturers Association, Cowan Dynamics Inc explores how proper specification, installation, and maintenance are critical for actuator longevity and performance in these punishing environments.
From choosing the right materials to preventing ingress and ensuring electrical compatibility, the article outlines practical solutions for one of the industry’s harshest applications.
In froth flotation, unreliable actuators mean lost profit. Our AT Series actuators with fully enclosed transducers and air-spring fail-safe systems solve these ⚠️ failure points:
• Overshooting from loose linkage arms
• Internal corrosion from high humidity and reagent splashing
• Seal degradation from xanthates, lime, and acids
• Pneumatic complications due to moisture and fluctuating air pressure
How did we do it?
• Fully enclosed position transducers: Protected from corrosion, vibration, and magnetic interference
• Air-spring fail-safe systems: Ensure tight shutoff and continued actuation during power or air loss
• Specialty rod scrapers and multi-step seals: Prevent ingress of ultrafine particles and chemical contaminants