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Regulation 59. Snifting valves.



                                    P.U.(A) 5/70
FACTORIES AND MACHINERY (STEAM BOILER AND   
                    UNFIRED PRESSURE VESSEL)
                             REGULATIONS, 1970
             PART III - UNFIRED PRESSURE VESSELS

Regulation 59. Snifting valves.

Any unfired pressure vessel wherein may be formed a partial vacuum shall be provided with a
snifting valve or other vacuum breaking device unless such vessel is constructed to withstand
such vacuum.



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