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vent and minimum flow

vent and minimum flow

vent and minimum flow

(OP)
Hi!
i see a pumps used in ammonia storage (LPS) have a both vent line and minimum flow line. Vent line back to storage where the suction line came, but minimum flow line return to the storage top!
What is the difference between this lines?     

RE: vent and minimum flow

Vent line should take vapors back to top of tank, minimum flow should take liquids back to suction.  They seem to be marked incorrectly.

Let your acquaintances be many, but your advisors one in a thousand'  ...  Book of Ecclesiasticus

RE: vent and minimum flow

(OP)
maybe!
but minimum flow line also back to suction side of pump.

RE: vent and minimum flow

That's what I said.

Let your acquaintances be many, but your advisors one in a thousand'  ...  Book of Ecclesiasticus

RE: vent and minimum flow

(OP)
yes you are right! thanx

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