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What is a directional control valve and what are the types of DCV In mechanical actuation type, spring or ball is used to actuate the DCV DCV can also be actuated by pilot pressure or by using an electrical solenoid According to the internal moving part construction Poppet type – in which a piston or ball moves on and off the seats Rotary type – in this type the spool rotates about its axis
What is Pilot Valve? Working Principle Types - AutomationForum DCV valves which are pilot operated could be drained internally or externally according to the need What is a pilot check valve and how pilot operated check valve works This valve has a valve body with inlet and outlet ports and it also has a poppet which is biased against a spring
What is a proportional control valve? - AutomationForum The proportional control valve can be considered as the combination of the hydraulic valve actuation and the electronic control So basically a hydraulic valve that is electrically operated by proportional solenoids are classified as proportional valves The proportional valves can be used to do the variation of the flow or pressure according to the electrical […]
Instrument Abbreviations used in P ID Diagrams - AutomationForum Based on Institute of Instrumentation and Control, a piping and instrumentation diagram (P ID)is defined by the diagram which shows the interconnection of process equipment and the instrumentation used to control the process
Proportional Vs Servo Valves - AutomationForum The expanding application of electronics in today’s technology for governing various actuation systems such as hydraulic and pneumatic systems in process industries has naturally boosted interest in servo and proportional valves
What is a counterbalance valve? - AutomationForum This type of valve would allow the flow in one direction and it would restrict the flow in the opposite direction These valves are normally closed valves, in order to do a reverse flow a check valve is used These valves are mostly placed between a cylinder and the directional control valve The counterbalance valve […]