What is Air fail close valve? what is the difference between Air fail close and air fail open valve?

#What is Air fail close valve? #what is the difference between Air fail close and air fail open valve?
#air fail close control valve
#air fail open control valve
#control valve
#measurement
#Instrumentationwithrajesh
#instrumentation

[@amitkumar-qp5sr]

Nice

[@Instrumentationwithrajesh]

Thanks

[@amitkumar-qp5sr]

Sir iss video me aur v information ho to plzz bataiye

[@Instrumentationwithrajesh]

Ok