I-751.Europe / European Alarm Check Valve Stations / Installation, Maintenance, and Testing Manual
REMOVING AND REPLACING THE CLAPPER
ASSEMBLY (ALL SIZES)
1. Perform steps 1 – 5 of Section VI, Required Internal Inspection.
2. Remove one clapper shaft retaining bushing from the valve body.
3. Remove the clapper shaft. NOTE: As the shaft is being removed,
the clapper spring will drop out of position. Save the clapper spring
for re-installation.
4. Remove the clapper assembly from the valve body seat ring. Clean
out any holes that are plugged in the valve body seat ring. DO NOT
USE SOLVENTS OR ABRASIVES.
CAUTION
• DO NOT use solvents or abrasives on or near the valve body seat
ring.
• Use only Victaulic-supplied replacement parts.
Failure to follow these instructions could cause improper valve
operation, resulting in property damage.
5. Place the new clapper assembly onto the valve body seat ring.
Verify that the holes in the clapper arms align with the holes in the
valve body.
6. Start the clapper shaft into the valve body and Install the clapper
spring onto the clapper shaft. Verify that the loop of the clapper
spring is facing the clapper, as shown above.
7. Finish inserting the clapper shaft through the clapper arm and
valve body.
8. Apply thread sealant to the clapper shaft retaining bushing. Install
the clapper shaft retaining bushing into the valve body until hand-
tight.
8a. Tighten the clapper shaft retaining bushing until metal-to-metal
contact occurs with the valve body.
8b.
Check the clapper for freedom of movement.
9. Re-install the cover plate by following the “Installing the Cover
Plate Gasket and Cover Plate” instructions on page 25.
I-751.Europe_24REV_G
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