can any one tell leakage class in control valve depend on
which parameter and there is any specific table or chart for
selection of valve leakage class
Answer Posted / narayan sharma
It mainly depends on the fluid property passing through the
control valve i.e temp, viscosity etc.
Eg for Steam application we have to select ClassIV leakage
class,ClassVI can't be used for the same, as Class VI
leakage class can be achieved by using Metal to Soft
sealing & soft sealing can't withstand this high
temperature.
hope this will resolve ur query.
Best of luck.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How digital input and digital output 's are working in dcs
What is wet leg condition and why is it used?
What is 1:1 redundancy ?
How to Calibrate Ultrasonic flow Transmitter in Field
What is Cavitation in a control valve?
why direct mounted pressure transmitters is always installed with DBB ( double bleed block) valve in process line or top of the tanks ?
i have used level transmitter in starch cooking preparation tank. tank total height 2mtr.sometime LT display shows some error value when tank is fully empty and diaphragm side i already checked okay no problem in diaphragm area. field cable checked 24volt and mA shows correct value while tank empty mA is 4mA. 4mA i needed that 0% but display showing 10% or 15% percentage values are varying continously please give any good solution for me.....
How can you add value to this Industry if offered the job?
Which type of diagphram use in costic line,DM water line,natural gas line,oil line?
What is rang ability?
how to relay switch sense the fault?
how we are selecting instuments by differentiating certain instruments in 4 to 20 ma range and certain in 1 to 5 v dc
applications of plc in printing and packaging?
Where are oxygen analysers installed in cfbc boilers? What are their usual readings?
what is effect of specific gravity in differential level transmitter , explain formula related with this .