what is cavitation in control valve?
& how we can avoid it?
Answer Posted / rajesh.
When a fluid passes a valve the fluid velocity increases. If the speed through the valve is high enough, the pressure in the liquid may drop to a level where the fluid may start bubble or flash. The pressure recovers sufficiently and the bubbles collapse upon themselves.
This situation is extremely destructive and may wear out the trim and body parts of the valve in short time which called Cavitation.
With an increasing fluid temperature the possibility for cavitation increases.
Cavitation can be avoided by using more than one control valve or more convenient - a multistage control valve.
Is This Answer Correct ? | 18 Yes | 1 No |
Post New Answer View All Answers
What is Alpha & Beta fctors related to Orifice Plate & its relation with flow?
plz you help about Que paper of mahagenco previous your,any model paper relad to it{maharastra power genration}
why micro controller 8051/52's clock frequency is internally divide by 12 ?? and why it is further divide by 32 in UART serial communication ??
How to Calibrate Radar Level Transmitter in Field
what will the sending unit in the fuel gauge utilizes?
send me last 5 years questions asked in rrb chennai, for section engineer
how can leve transmetter calibate in feild .and also put cv and flow plz .....
how to work static pressure sensore how to work dpt
Define cryogenic?
How does temperature bath work? How does coil gets heated only by applying some current?
anybody having Qatar Petroleum questions for instrument Technician offshore ....please send me
I have a Control VAlve having size of 2 ".Only the known parameter is Pressure drop . Its 2 Kg. Then How to calculate control valve sizing means Cv.
How is work 5/2 sov?
What is difference between differential pressure & delta pressure?
how to design orifice plate?what is the equation?