Kidde IG-100 - 7-6.4 Nitrogen Cylinder I-Valve Inspection and Services; Valve Disassembly

Post-Discharge Maintenance
06-237619-001 7-7 April 2020
7-6.4 Nitrogen Cylinder I-Valve Inspection and Services
Inspect and service the Nitrogen I-Valve used on the 1040 cu. in. Nitrogen Pilot cylinder as
follows:
Note: After every discharge, certain components in the I-Valve assembly will have to be ser-
viced and inspected before recharging the Cylinder/Valve Assembly. Part numbers for
items which may require replacement are listed in Table 7-2.
7-6.4.1 Valve Disassembly
Note: Refer to Figure 7-3 and Table 7-2.
1. Remove valve seat (P/N WK-202490-000).
2. Remove copper sealing gasket (P/N WK-326420-000).
3. Remove main check assembly and spring (P/Ns WK-800760-000 and
WK-326410-000).
4. Remove sleeve retainer, brass sleeve and pilot check assembly (P/Ns
WK-202804-000, WK-202805-000 and WK-923066-000 respectively).
5. Remove the main check and pilot check assemblies.
Figure 7-3. 5/8-inch I-Valve for Nitrogen Driver
WARNING
Before disassembly of valve, relieve all pressure from the cylinder. Contents
under pressure can cause personal injury or property damage.
Table 7-2. I-Valve Components
Part Number Description Qty.
WK-923066-000 Pilot Check Assembly 1
WK-202805-000 Brass Sleeve 1
WK-202804-000 Sleeve Retainer 1
WK-326410-000 Spring 1
WK-800760-000 Main Check Assembly–5/8" I-Valve 1
WK-326420-000 Copper Gasket 1
WK-202490-000 Valve Seat 1
WF-368200-000 Safety Disc (white) 1
WK-294500-000 Washer 1
5.44 in.
SLEEVE
WK-202805-000
1.25-18 NS-3
HEAD CONNECTION)
(FOR CONTROL
PILOT CHECK
WK-923066-000
SLEEVE RETAINER
WK-202804-000
VALVE BODY
WK-270403-000
VALVE SEAT
WK-202490-000
MAIN CHECK
WK-800760-000
2.50-14 NS-3
(FOR DISCHARGE
HEAD CONNECTION)
SPRING - WK-326410-000
DISC RETAINER
WK-220034-000
SAFETY DISC
WF-368200-000
TYPICAL
CYLINDER
GASKET
WK-326420-000
COPPER
WASHER
WK-294500-000