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What is the purpose of the special two-way valves mounted on towers at a given height above the cargo deck of a chemical tanker?

11 Nov '19, 04:51

Nov. 11, 2019, 4:51 a.m.
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Answer:

Those valves automatically prevent excessive pressure in a cargo tank (releasing harmful vapors away at a safe height) and relieve excessive vacuum.

Should appropriately set and settings regularly checked.

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11 Nov '19, 04:53

Nov. 11, 2019, 4:53 a.m.
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