SPRING SET PRESSURE
SPRING SET PRESSURE
(OP)
FOR A CONVENTIONAL SAFETY VALVE... WHICH SHOULD BE THE SPRING SET PRESSURE... I'VE READ TWO ARTICLES... AND THEY SAY:
1) SPRING SET PRESSURE= SET PRESSURE-SUPERIMPOSED BACK PRESSURE - BUILT UP BACK PRESSURE
2) SPRING SET PRESSURE=SET PRESSURE - SUPERIMPOSED BACK PRESSURE
WHICH ONE OF THESE DEFINITIONS IT'S OK?
1) SPRING SET PRESSURE= SET PRESSURE-SUPERIMPOSED BACK PRESSURE - BUILT UP BACK PRESSURE
2) SPRING SET PRESSURE=SET PRESSURE - SUPERIMPOSED BACK PRESSURE
WHICH ONE OF THESE DEFINITIONS IT'S OK?





RE: SPRING SET PRESSURE
Is there real need to use Block Capitals;I consider this inadequate here.
Best Regards
Qalander(Chem)
RE: SPRING SET PRESSURE
Note: caps used for emphasis.
RE: SPRING SET PRESSURE
So, differential test (or set) pressure should only address the constant portion of the superimposed back pressure (There is sometimes a "variable superimposed" portion. This type of back pressure varies or changes over a range from a minimum to a maximum, or vice versa. The actual back pressure at any specific time depends on conditions in the piping system to which the outlet of the valve is connected).
P.S: Could you please give us the references of the 2 articles you have mentionned?
"We don't believe things because they are true, things are true because we believe them."
"Small people talk about others, average people talk about things, smart people talk about ideas and legends never talk."