Type of valve employed depends on nature of fluid flow control required operating pressure and temperatures as well as surround atmosphere.
Motor operated gate valve symbol.
Gate valve with pneumatic membrane actuator.
Due to the large size of the valve actuator an electric motor is needed to open or close a valve.
Pilot operated relief valve are just working as a relief valve but are used for large size piping.
In this type a small relief valve is used to operate the main relief valve.
Electric gate valve motorized gate valves are manufactured to the latest edition of api standard 600 and tested to api standard 598.
Motor operated valves commonly abbreviated as mov on p ids are valves which are actuated by electric motors.
These details may include the size function pressure rating and connection type of the valve.
Actuator is a driving device capable of providing linear or rotary motion which works under a certain control signal.
Many types of valves are required in a process plant for flow regulation or on off purpose.
Search symbols browse symbols online dxf and dwg.
It is a modification of a generic valve symbol by inserting a vertical line between two triangles.
Gate valve with manual actuator.
Figure 1 motor operated valve mov motor operated valve mov is an important item of plant piping system.
These valves are generally of large size and are used for different applications such as pump discharge etc.
An engineer may also include specific details below the control valve symbol.
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.
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.
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 symbols shown.
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.
Now see the p id symbol for the gate valve.
Actuated valve motor operated valve mov valve motorized valve etc.
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.
Three way valve with pneumatic actuator.
Here is a list of symbols for various types of valves used in process industry.
