Wash. Admin. Code § 296-301-120 - Drying cans
(1) Pressure
reducing valves and pressure gages must conform to the ASME Code for Pressure
Vessels, section VIII, 1968, Unfired Pressure Vessels.
(2) Vacuum collapse. If cans are not designed
to prevent vacuum collapse, each can must be equipped with one or more vacuum
relief valves with openings of such a size as to prevent the collapse of the
can if vacuum occurs.
Notes
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