Answer Posted / joby
if the valve is in higher size ,we have to go for higher
actuators for operating the valve.
FOR ESD VALVES
if the valve size is more than 18" mostly the suppliers
prefer hydraulic systems for operating the actuator
instead of air.The pressure required to operate the higher
size actuator will not be sufficient ,if you are using
plant air.
| Is This Answer Correct ? | 1 Yes | 3 No |
Post New Answer View All Answers
how to tune siemens sipart electro pneumatic positioner..plz tel me..
How the sizing of the analog signal cable is calculate?
Why ac supply load cell is used? Can we use the dc supply load cell?
I want to know the questions asked in ONGC interview(after being selected in the written exam) for Instrumentation branch.Kindly help.
what is sliding spool valves?
what is interface level and how it is calibrate?
how many types of viberation transmitter and how to calibrate and where use of vibration transmitter
What is 1:1 redundancy ?
hiii.... can any one provide me previous years question paper of hindustan petroleum for instrumentation engineering???
what is output of FOUNDATION FIELD BUS transmitter
How to regulate the flow of Air in 4" line, with max flow of 330 nm3/hr and Pressure of 0.5 bar? please suggest the type of instrument required.
what is the PC interface and software for connection to ABB logic module “ LM011-CE18RAC “ ( for Programming ) ??
Explain the working of an enraf level gauge.
How is automatic reference junction compensation carried out in temperature recorders?
hey any one got the papers of SAIL and HPCL plz do help me by posting them to my mail ID's naren07_87@yaho.co.in, surenarendra@gmail.com