These valves are generally of large size and are used for different applications such as pump discharge etc.
Motor operated gate valve symbol.
Three symbols shown.
Type of valve employed depends on nature of fluid flow control required operating pressure and temperatures as well as surround atmosphere.
Figure 1 motor operated valve mov motor operated valve mov is an important item of plant piping system.
Actuator is a driving device capable of providing linear or rotary motion which works under a certain control signal.
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Here is a list of symbols for various types of valves used in process industry.
For example the note 2 300 rf pb indicates that the p id calls for this valve to be a 2 ansi 300 raised face piston balanced valve.
Motor operated valves are often called as on off valves as the motors serve the purpose of fully opening or fully closing valves in pipelines.
Electric gate valve motorized gate valves are manufactured to the latest edition of api standard 600 and tested to api standard 598.
Valve gate motor operated valve globe valve globe motor operated valve angle hose angle valve hose gate valve hose globe valve lockshield valve quick opening valve saftey sleeve.
Many types of valves are required in a process plant for flow regulation or on off purpose.
An engineer may also include specific details below the control valve symbol.
Actuated valve motor operated valve mov valve motorized valve etc.
Now see the p id symbol for the gate valve.
Due to the large size of the valve actuator an electric motor is needed to open or close a valve.
The actuator uses liquid gas electricity or other energy sources and converts it into a driving action through a motor cylinder or other device.
Three way valve with pneumatic actuator.
Pilot operated relief valve are just working as a relief valve but are used for large size piping.
Gate valve with pneumatic membrane actuator.
Motor operated valves commonly abbreviated as mov on p ids are valves which are actuated by electric motors.
It is a modification of a generic valve symbol by inserting a vertical line between two triangles.
Gate valve with manual actuator.
In this type a small relief valve is used to operate the main relief valve.
Symbols for position and process controllers for process valves 10 globe valves straight through diaphragm valves full bore 2 2 way 19 ball valves multi port 3 2 way with t passage 21 ball valves multi port 3 2 way with l passage 22 butterfly valves 2 2 way 23 swing check valve 2 2 way 24 gate valves 2 2 way 25 pinch valves 2 2 way 26.
These details may include the size function pressure rating and connection type of the valve.
