Series 756 FireLock
®
European Dry Valve Stations
24
6.
Insert the seal washer carefully underneath the sealing lip
of the gasket.
7.
Make sure the clapper is free of contaminants, dirt, and
mineral deposits. Clean any holes in the valve body seat ring
that are plugged.
DO NOT USE SOLVENTS OR ABRASIVES.
8.
Install the clapper seal into the clapper carefully. Make
sure the seal ring snaps into the clapper completely.
9.
Place the seal retaining ring onto the seal washer of the
clapper seal.
10.
Install the seal assembly bolt/bolt seal through the seal
retaining ring and clapper. Tighten the seal assembly bolt/bolt
seal completely, and apply an additional
1
/
4
turn to ensure a
proper seal.
11.
Re-install the cover plate by following the “Installing Cover
Plate Gasket and Cover Plate” section, starting on page 25.
Removing and Replacing Clapper Assembly
1.
Perform steps 1 - 8 of the “Required Internal Inspection”
section, starting on page 21.
2.
Remove one clapper shaft retaining bushing from the
valve body.
3.
Remove the clapper shaft, as shown above.
NOTE:
As the
shaft is being removed, the clapper spring will drop out of posi-
tion. Keep the clapper spring for re-installation. Remove the
clapper from the valve body.
CAUTION
• DO NOT use solvents or abrasives on or near the valve body seat ring.
Failure to follow this instruction could prevent the clapper from sealing prop-
erly, resulting in improper valve operation, valve leakage, and/or property
damage.
CAUTION
• Use only Victaulic-supplied replacement seal assembly bolt/ bolt seal when
reassembling the clapper.
Failure to follow this instruction could cause improper sealing, resulting in
valve leakage and/or property damage.
