Views: 3 Author: Site Editor Publish Time: 2020-11-28 Origin: Site
A valve actuator is a mechanical device that operate a valve with a power source. This power source includes electriccity , compressed air and hydraulic (oil). Rotary and linear are two main types of actuators. Shuangzhan machinery (newtek) can help you select the best actuator for your application. All valve configurators allow the quick and easy comparison of all applicable actuators.
Valve type: ball/gate/control/diaphragm etc
Power sources available: electricity/air/oil etc
Environment of installation: chemical/sanitary/food/beverage etc
need for fail safe
speed of actuation
need for manual override
limit switch/positioner (common or ex type)
Rotary valve actuators produce the rotational motion needed to operate roatary valves such as ball, plug, and butterfly valves. Rotary actuators are available in many different styles, each with its own benefits.
due to their distictly different operation, Linear valves such as globe, gate, and pinch valves require actuators that are drastically different from the rotary type.
Both linear and rotary style actuators are available with the various power sources : pneumatic, hydraulic, and electric. In addition to these, there are also several distinct types of manual operators. There are solenoid and motor drive by electricity.