McCANNALOK CRYOGENIC VALVE
Installation, Operation and Maintenance Manual
© 2020 BRAY INTERNATIONAL, INC. ALL RIGHTS RESERVED. BRAY.COM The Information
contained herein shall not be copied, transferred, conveyed, or displayed in any manner that would
violate its proprietary nature without the express written permission of Bray International, Inc.
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5.0
LONG TERM STORAGE
5.1
McCannalok Cryogenic valves are cleaned and double bagged to form
a vapor barrier with desiccant bags to prevent moisture from collecting
on the valve. If the valves are to be stored before installation, storage
must be carried out in a controlled manner as follows:
5.1.1 Valves must be stored in a closed, clean and dry environment.
5.1.2 Valve disc to be in closed position and the body end faces must be
covered with appropriate flange protection. Flange protectors should
only be removed at the time of installation.
5.1.3 If the valve is automated for fail open service, the valve shall be
carefully protected to ensure there is no damage to the sealing
surfaces.
5.1.4 Valves should be stored indoors with a preferred temperature range
from 40°F (4°C) to 85°F (29°C).
5.1.5 The valves should be checked every three months to ensure the above
conditions are maintained.
5.1.6 If the valve vapor barrier bags are broken or compromised in any way,
valve shall be evaluated to determine if cleaning is necessary. Any dirt
or debris can prevent the valve from functioning properly.
WARNING
If valve is for oxygen service and the vapor barrier bags are compromised, the
valve must be disassembled and re-cleaned using approved oxygen cleaning
procedures before installation.
5.2
These are general guidelines for valve storage. Please consult the
factory for information regarding specific requirements.
