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Post-Discharge Maintenance
06-236115-001
6-5
October 2014
6-2.6
Valve Assembly (3-inch)
Note: Refer to Figure 6-3 and Table 6-3.
1. Install the O-ring (Item 2 in Figure 6-3) in the piston groove.
2. Press the piston back into the valve body.
3. Install the spring.
4. Install the O-ring onto the groove in the valve cap. Screw the cap onto the valve body and
torque to 360 in lb (41 N-m).
5. If the siphon tube had to be removed for valve disassembly, wire brush the siphon tube
threads to remove the old Loctite residue.
6. Apply a film of Loctite® primer to the siphon tube threads and allow three to five minutes
to dry.
7. Apply a film of Loctite® sealant to the threads and reinstall the siphon tube.
8. Install the O-ring onto the valve neck groove, screw the valve and siphon tube onto the
cylinder, and torque to 600 to 660 in lb (68 to 75 N-m).
6-2.7
Safety Disc Replacement (1½-inch and 2½-inch valves and 2-inch
valves manufactured prior to May 2014)
Note: For 2 inch valves, this process only applies to those 2 inch valves manufactured prior
to or during April 2014. For 2 inch valves manufactured after April 2014, see
The safety disc is located on the valve.
1. Remove the safety disc retainer including safety disc and safety disc washer from the cyl-
inder body. See Figure 6-5. Discard the safety disc and washer.
2. Assemble the new safety disc retainer with a new safety disc and safety disc washer to the
valve body. Torque to the appropriate value listed in Table 6-4.
CAUTION
If the siphon tube is being replaced due to damage or wear, contact Kidde
Fenwal Inc. to ensure the proper replacement part is ordered based on the
manufacturing date of the valve.
CAUTION
Make certain that the Teflon
®
back-up ring is below the O-ring as shown in
CAUTION
Whenever the valve is rebuilt, the Safety Disc Assembly must be replaced. Refer
WARNING
Before removing the valve, make sure that all pressure has been relieved from
the cylinder. To relieve any remaining pressure, restrain the cylinder and
depress the pressure check in the Supervisory Pressure Switch.
Содержание ECS
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