How do I choose a pneumatic actuator?
How do I choose a pneumatic actuator?
Selecting a Pneumatic Actuator
- Valve torque (in./lb.)
- Sizing safety (%)
- Double-acting or spring return.
- Fail open or close.
- Fail on: electric only, pneumatic only, or electric and pneumatic.
- Operating temperature range (°F)
- Minimum/maximum operating speed (seconds/90°) to open and close.
What is a Bettis actuator?
Bettis™ is a world leader in pneumatic and hydraulic quarter-turn and linear valve actuators. They also offer a line of quality electric actuators. With more than 50 years experience in the industry, Bettis actuators are used in virtually every application where valves are operated automatically, onshore and offshore.
Where are Bettis actuators made?
Built on Experience. Made Locally in Texas. Best known for its pneumatic and hydraulic actuators, Bettis has led the actuation market for more than 90 years; while Biffi has produced electric actuators in Fiorenzuola, Italy, for 65 years.
What pneumatic spring ranges for pneumatic actuators are considered industry standard for HVAC application?
Spring ranges of 5 to 10 psi and 8 to 13 psi are normally used for pneumatic damper actuators.
What are the specifications that should be considered in selecting an actuator?
System designers should consider the following eight criteria when choosing between fluid-driven and electromechanical actuators.
- Motion profile control.
- Impact on cleanliness and safety.
- Durability and maintenance.
- Ambient noise.
- Energy efficiency.
- Space efficiency.
- Integration with other applications.
How do you size a pneumatic actuator?
When sizing an actuator, first consider your valve’s torque requirements. This includes: Break torque, or opening torque, refers to the force required to start moving a closed valve. Running torque, or mid-stroke torque, is the force required to maintain movement of the valve between the open and closed positions.
What is Scotch Yoke actuator?
A scotch yoke actuator may be defined as a mechanical device that converts linear force into torque to motorise quarter-turn valves. A single-acting scotch yoke actuator is made of three main components: housing containing the yoke mechanism, pressure cylinder containing the piston and spring enclosure.
How do I choose an electrical actuator?
Four Steps to Choosing the right Linear Actuator
- Step 1: Determine the amount of force required.
- Step 2: Determine the distance the actuator needs to move.
- Step 3: Determine the speed required.
- Step 4: Based on your project choose a type of Linear Actuator.
How do you categorize an actuator?
Actuators can be categorized by the energy source they require to generate motion. For example: Pneumatic actuators use compressed air to generate motion. Hydrolic actuators use liquid to generate motion.
How do you size an actuator?
To size an actuator correctly, we need to understand: Minimum and maximum supply pressure….Understanding Minimum and Maximum Supply Pressure
- be capable of operating at the minimum supply pressure available.
- develop sufficient torque to overcome the valve torque throughout the complete stroke.
What is a Bettis valve actuator?
The Bettis G-Series pneumatic, scotch yoke, valve actuator is a highly unique and reliable actuator for operating ball, butterfly or plug valves along with louvers, dampers and other 90 degree rotating mechanisms. Suitable for use in demanding SIL-required applications. Learn About.
Which is the best pneumatic valve actuator?
Bettis CBA300 Series Scotch Yoke Pneumatic Valve Actuator Compact and lightweight, for efficient and cost-effective valve automation. A rugged, scotch yoke pneumatic valve actuator that uses the state-of-the-art Powr-Swivl. New turnkey pneumatic actuation valve control system combing actuator and controls.
Why choose Emerson pneumatic actuators?
Reliable and efficient pneumatic actuators for fail-safe, extreme environments, and critical applications without compromising performance or safety. Explore Emerson’s latest acquisition of pneumatic actuation products.
What is a rack and pinion actuator used for?
Pneumatic Rack and Pinion Actuators. Bettis Rack and Pinion Pneumatic Actuators offer reliable torque to automate valves for a wide range of industrial applications from big to small, hot to cold, general to severe.
