Interested to Buy Any Domain ? << Click Here >> for more details...
why full bore ball valve is not used in steam applications?
- 1 Answers
- 6420 Views
- I also Faced
- E-Mail Answers
Answer Posted / instru
Rotary valves like Ball, butterfly valves are called as
high recovery valves. High recovery means less pressure drop
ofcourse compare to Globe valves. The biggest problem with
high recovery valves is that they are prone to Cavitation.
In case of Globe valves the path is quite torturous and
hence less prone to cavitation. In case of ball valves flow
is starigh through the ball. Cavitation occurs when pressure
at the vena contract drops below the liquid vapour presure.
In case of ball valves the vena contracta pressure and inlet
pressure have marginal difference ( thats why high
recovery). When inlet pressure and vena contract pressure
are clsoe to each other valve is definetely to cavitate .
Hence Ball valves are not used in applications where
cavitation is likely to occur.
| Is This Answer Correct ? | 7 Yes | 1 No |
Post New Answer View All Answers
What is the use of double seated valve?
plz tell me clearly about PID.."when v have to change I value,D value,GAIN??
State four different types of flow measurement, for gas flow measurement MMSCFD is the common unit expand the unit and specify significance of word S in the unit.
What is the difference between modbus,fieldbus & profibus
how to work static pressure sensore how to work dpt
how do calibrate the valves.. with clear manual
give eg of how I/P is used in control loops
What is the use of single seated valve?
If P will increase then what will happen with PID?
Why mmwc unit is used?
Gas equation
Q- What are the application in which PNP transistor is preferred over NPN ?
what is the reset offset and control system in instrumentation
Can please tell mi about SIOS, PRM, SERVER, and what is the diference between PIN LAN, PCS LAN,APC Server, and please send the Doc if possible for referance,mail id patil_amit17@yahoo.com
What are the types of control valves available
