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Posv And Balanced Bellow Psv


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#1 streamt


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Posted 11 July 2019 - 06:35 AM

1) Is the pilot valve of a POSV a conventional or balanced type ?

2) If conventional, does it have the same simmer and blowdown as a normal conventional PSV ?

3) Does this affect the characteristics of a POSV ? If not, why not ?


4) How is the pilot of the POSV sized ?

5) How is it ensured that the dome pressure reduces when the pilot PSV opens i.e. the dome does not get "re-filled" through the pick-up line ?


4) Dome area of the main POSV is more than its bottom area. Why and by how much ?


5) What is the simmer and blowdown characteristic of a balanced bellows PSV ?


#2 Bobby Strain

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Posted 11 July 2019 - 09:18 AM

You can do a bit of research and answer your questions.

Edited by Bobby Strain, 11 July 2019 - 11:40 AM.

#3 breizh


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Posted 11 July 2019 - 10:55 AM




You may contact this company to support your query.

my 2 cents


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