Automatic Flow Control Valve Symbol

Here is a list of symbols for various types of valves used in process industry.

Automatic flow control valve symbol.

Excellent to be used as a control valve due to its complex flow path. 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. The symbology for the identification of the measurement and control instrumentation on the flow and process diagrams and on the p id piping instrument diagram commonly called p i piping instrumentation is generally compliant with the standard isa instrumentation society of automation identified as s 5 that is composed of identification codes and graphic symbols. Many types of valves are required in a process plant for flow regulation or on off purpose.

Here is a brief breakdown of how to read a symbol. Symbol for pressure inlet port of valve. Scan through and easily download the one you need. Berry all the symbols you need to design your pneumatic circuit in dxf format.

Type of valve employed depends on nature of fluid flow control required operating pressure and temperatures as well as surround atmosphere. For a demonstration of the flow control valve in action click here. Automatic flow limiting valves do not require any additional balancing as do manual balancing valves therefore they reduce labor costs from not having to balance and rebalance the valves. Symbols show the methods of actuation the number of positions the flow paths and the number of ports.

This valve is known for precise throttling and control. An engineer may also include specific details below the control valve symbol. Symbol for 3. Piping symbol legend circulator w isolation flanges gate valve globe valve ball valve swing check valve flow check valve spring loaded check valve hose bib boiler drain thermostatic radiator valve trv straight circuit setter manual 3 way valve zone valve air separator backflow preventer diaphragm type expansion tank pressure reducing valve.

Pneumatic circuit valve symbols. Float operated valve symbol. When it succeeds it s invisible. Can be used for liquids gases that can easily be displaced when the valve disc closes.

Circulator with isolating flanges. Isolator r isolator y and k valves are available with a wide range of flows and psid. The spring pushes from the side that is drawn on and will return the valve back to its failsafe position. Pneumatic symbols only when the design fails does it draw attention to itself.

These details may include the size function pressure rating and connection type of the valve. Pneumatic circuit symbols representing these valves provide detailed information about the valve they represent. Symbol for spring or rest position of valve. 3 way plug valve symbol.

Symbol for 2 port valve with two positions one position valve open with flow in both directions or valve closed with both ports blocked. Motorized 4 way valve.