enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Control valve - Wikipedia

   en.wikipedia.org/wiki/Control_valve

   Valve actuator – which moves the valve's modulating element, such as ball or butterfly. Valve positioner – which ensures the valve has reached the desired degree of opening. This overcomes the problems of friction and wear. Valve body – in which the modulating element, a plug, globe, ball or butterfly, is contained.

3. Butterfly valve - Wikipedia

   en.wikipedia.org/wiki/Butterfly_valve

   Butterfly valve with actuator electric valve - An electrically actuated butterfly valve is a quarter-turn valve controlled by an electric motor. It offers fast and precise flow regulation, remote operation, and versatility for various applications.

4. Pneumatic actuator - Wikipedia

   en.wikipedia.org/wiki/Pneumatic_actuator

   A pneumatic actuator mainly consists of a piston or a diaphragm which develops the motive power. It keeps the air in the upper portion of the cylinder, allowing air pressure to force the diaphragm or piston to move the valve stem or rotate the valve control element. Valves require little pressure to operate and usually double or triple the ...

5. Valve actuator - Wikipedia

   en.wikipedia.org/wiki/Valve_actuator

   The blue valve body is visible in-line with the pipe. The valve actuator opens or closes the butterfly disc of the valve based on electrical signals sent to the actuator. Another valve actuator is visible in the background, with windows to indicate the valve position. A valve actuator is the mechanism for opening and closing a valve. Manually ...

6. Rotary actuator - Wikipedia

   en.wikipedia.org/wiki/Rotary_actuator

   These can range from zero power actuators [notes 1] that are only used as display devices, such as air core gauges. Others include valve actuators that operate pipeline and process valves in the petrochemical industry, through to actuators for large civil engineering projects such as sluice gates and dams. Examples are...

7. Air-operated valve - Wikipedia

   en.wikipedia.org/wiki/Air-operated_valve

   Modulating control valves each with 4-20mA I to P converter linked to pneumatic a valve positioner controlling a diaphragm actuator. An air-operated valve, also known as a pneumatic valve, is a type of power-operated pipe valve that uses air pressure to perform a function similar to a solenoid.

8. Exhaust brake - Wikipedia

   en.wikipedia.org/wiki/Exhaust_brake

   Usually pneumatic or hydraulic actuators are used to operate the butterfly valve, but with the large force of exhaust gases this type of actuator turns out to be inefficient, hence the ARIS type of valve actuator which is widely used in the industry and provides effective valve-operating force.

9. Actuator - Wikipedia

   en.wikipedia.org/wiki/Actuator

   Pneumatic actuator operating a valve through a rack-and-pinion mechanism. [7] A pneumatic actuator is similar to a hydraulic one but uses a gas (usually air) instead of a liquid. [8] [9] Compared to hydraulic actuators, pneumatic ones are less complicated because they do not need pipes for the return and recycling of the working fluid. On the ...