I-751.Europe / European Alarm Check Valve Stations / Installation, Maintenance, and Testing Manual
INSTALLING THE COVER PLATE GASKET AND
COVER PLATE
CAUTION
• Use only Victaulic-supplied replacement parts.
Failure to follow this instruction could cause improper valve
operation, resulting in property damage.
1.
Verify that the cover plate gasket is in good condition. If the gasket
is torn or worn, replace it with a new, Victaulic-supplied gasket.
2. Align the holes of the cover plate gasket with the holes in the cover
plate.
3. Insert one cover plate bolt through the cover plate and cover plate
gasket to ease alignment.
CAUTION
• DO NOT over-tighten the cover plate bolts.
Failure to follow this instruction could cause damage to the cover
plate gasket, resulting in valve leakage.
4. Align the cover plate/cover plate gasket to the valve. Verify that the
clapper spring’s arms are rotated to their installed position. Tighten
all cover plate bolts into the cover plate/valve body.
5.
Torque all cover plate bolts in an even, crossing pattern. Refer to
the “Required Cover Plate Bolt Torques” table on this page.
DO NOT over-tighten the cover plate bolts.
REQUIRED COVER PLATE BOLT TORQUES
Nominal
inches
DN
Actual Outside
Diameter
inches
mm
Required Torque
inch-lbs
N•m
3 3.500 60
DN80 88.9 81
4 4.500 100
DN100 114. 3 136
6.500 115
165.1 156
6 6.625 115
DN150 168.3 156
8 8.000 100
DN200 203.2 136
6.
Place the system back in service by following Section II, Resetting
the System.
I-751.Europe_25 REV_G
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