Process Valves > Valve Positioners and Actuators > DeZURIK Rotary Diaphragm Actuators


DeZURIK Rotary Diaphragm Actuators

DeZURIK rotary diaphragm actuators are designed for use on quarter-turn valves, for on-off or modulating control in fail-open or fail-closed mode. Fail-safe operation can be easily changed in the field without any additional parts.

Rotary diaphragm actuator design features a sealed and gasketed design to protect against grit, moisture and corrosive contaminants.

The popular DR-40B stainless steel design offers resistance against corrosion in a variety of industrial environments. DR-55, DR-85, DR-145A and DR-250A epoxy-coated cast iron and steel construction actuator models are available for larger rotary control valves.

Key Specifications

Specifications, Manuals, and Supporting Literature


Subscribe to the Lesman Instrument Company YouTube channel.Lesman Instrument Company on YouTube

Video is a great way to learn about instruments and technology, and it's available whenever you need it. Watch step-by-step instructions on how to configure a transmitter, tune a controller, or troubleshoot a safety valve. We'll post videos we create, and those our manufacturer partners share with us, so you don't have to look in multiple places to find the video training you need.

Subscribe to Lesman's YouTube channel, and you'll get email notifications as soon as we add new training videos and webinars.