Protectoseal 7800 Series Installation & Maintenance

End-of-Line Emergency Pressure Vent
CAUTION:
If any questions arise concerning the proper installation
or maintenance of our products, please contact
Protectoseal or one of our Authorized Representatives.
When installing any Protectoseal device, the
legal, corporate and advisory safety regulations and
procedures appropriate for the specific installation site
must be fully understood and followed.
NOTE 1: This vent style includes a removable weatherhood.
The hood stem guide may be taped to the top of the
hood to prevent damage during shipment. This stem
guide will be threaded into the tapped hole on top of
the hood.
NOTE 2: When pressure weights (packed separately if
heavy) are included with a unit, the weights should
be inspected, properly identified and set aside for
later installation. Weights will be stamped with a se-
rial number matching the number on the vent; identi-
fication as pressure or vacuum weights; and a
statement as to the contribution that each weight
provides to the total pressure setting.
INSTALLATION PROCEDURE:
1. Loosen wing nuts and remove weatherhood.
2. Withdraw pressure pallet assembly. Remove and discard
protective cardboard and tape from assembly. The card-
board protects the diaphragm during shipment.
3. Remove protective flange cover.
SERIES 7800
4. Check carefully to insure that all packing materials are re-
moved from on or inside the vent housing and from the
pallet assembly.
5. Mount the vent to the appropriate tank flange using gas-
kets compatible with service conditions. Note: For some
vent styles, threaded studs that mate with tapped holes
in the vent housing flange are provided. For best perform-
ance, the vent should be mounted level so that the seat-
ing surfaces are no more than 1° off horizontal.
6. Reinstall the pressure pallet assembly. Setting weights (if
provided) should be installed by engaging the hole in the
weight on the pallet assembly stem. Make sure that
weights are properly installed as marked to provide spec-
ified set points. Heavy weights may be provided with
tapped holes to temporarily attach lifting hardware to fa-
cilitate installation. Any such threaded fasteners used
during installation must be removed from the weights.
Foreign objects will limit the lift capability of the pallet as-
semblies and will reduce rated flow capacity of the vent.
7. Replace the weatherhood. Note: Make sure that the
pressure pallet assembly stem positively engages the
hole in the stem guide in the weatherhood. It may be use-
ful to verify engagement of the pressure stem into the
weatherhood guide by unthreading the guide and then re-
installing it with the stem centered in the hole. The pallet
assembly must be free to move upwards, with the pallet
stem traveling into the stem guide.
8. Secure hood with wing nuts.
www.protectoseal.com
PROTECTOSEAL
®