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using pressure control valve as blowdown valve 2010-12-01
I need some opinion on the blowdown system for liquid petroleum gas storage. Some designer do not used any BD mechanisme except the PSV. However if I used PCV as BDV for blowdown any restriction from
valve check selection 2010-11-30
I have to select check valves for high pressure pipes (70 bar = 1000 psi), for sizes between 2" and 6". Up to now we are using single check valves, but I suppose it may be better to use double check i
Difficulty encountering while opening/clsoing Globe valve 2010-11-30
Is there anyone who can urgently share his/her expertise to advise on the problem I encountered. The problem is that Globe valve having very difficulty to turn Clockwise/anti-clockwise (close/open). I
Pneumatic Diaphragm and Pneumatic Piston Actuators 2010-11-30
What is the main functional difference between a pneumatic diaphragm actuator & a pneumatic piston actuator while operatin a globe valve.Will it be difficult to attain the precise control with piston
P&ID symbols 2010-11-30
Can anyone tell me where can I find a list proper symbols for P&ID diagram, like ball valves, globe valves...etc.?
