Interested to Buy Any Domain ? << Click Here >> for more details...
why full bore ball valve is not used in steam applications?
- 1 Answers
- 6358 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 basic difference between Modbus and CAN Open Protocols
How to Calibrate Radar Level Transmitter in Field
i want to find out iffco get test paper
how can leve transmetter calibate in feild .and also put cv and flow plz .....
I have energy meter for educational project having 0.5s class but my friend need 0.2s class meter , which one is good for that purpose and what is the actual difference of that two classes , need very easy example also.??
Somebody tell me in what way i need to prepare for csio pgrpe(adv instrum eng)interview?what all the quest can i expect?
Why is it necessary to use compensation leg to measure the liquid level in a closed or pressurized tank?
How does work A temperature valve or fv control valve in process plz brief me
please any body have most important data for study for saudi aramco test of instrument QC thanks email shahnaveedullah@gmail.com
Im having problems with interfase betwen SPI v7.0 and SPPID v5.05. Previous versions of Intools shoul be fixed with SPPIDproj.ocx file. It was necessary to replace this file with one that allows the connection between different versions of SPPID. It is necessary in the current version to do the same?Thanks
Calibration procedure for electro magnetic flow meter
what is the difference between profibus and controlnet networking.
Describe a time when you anticipated potential problems and developed preventive measures.
I am having a Phoenix digital to modbus converter. The o/p of the same is connected to flow computer FB407. But the digital signals are updated only after one minute in the flow computer. what may be the cause of delay in communication? Flow computer is having a scanning period of less than 1 sec.
What are advantages and disadvantage of the ac supply load cell?
