Hi Compositepro,
Thanks for your reply, but can we achieve class V shutoff at that high pressure with S&D actuator.
Some colleagues say the pounds per linear square inch for this case will be very high and S&D actuator may not achieve the seat tightness.
Thanks
Jack
Hi,
I wish to know if we can able to achieve class V shutoff with a spring and diaphragm actuator on a 900# globe control valve.
Application is Gas lift.
A colleague of mine told, best is select vendor offering piston with spring return actuator, as S&D actuator may not have thrust to achieve...
Hi all,
A customer wants to buy control valves.
Shutoff pressure is 130 barg.
Each vendor is justifying his position, one says S&D is fine, another says piston spring return.
Valve sizes from 4" to 8" rated 900# and above.
I felt because of high shutoff pressure piston with spring would be a...
