Valve Outlet Adapters, P/N Wk-283904-000, P/N Wk-283905-000 And P/Nwk-283906-000; Check Valve, 1/4-Inch, P/N Wk-264985-000; Dimensions, Valve Outlet Adapter - Kidde Fire Systems ECS Manual

3-3.7.2 Valve Outlet Adapters, P/N WK-283904-000, P/N WK-283905-000 and P/N
WK-283906-000
A valve outlet adapter connects the cylinder valve outlet to the discharge piping when a flexible
discharge hose is not used (see Figure 3-27 and Table 3-14).
Note: 3" valve cylinders are equipped with a roll-groove outlet. Use a standard groove-groove
connection in lieu of a valve outlet adapter.
Part Number
WK-283904-000
WK-283905-000
WK-283906-000
3-3.7.3

Check Valve, 1/4-inch, P/N WK-264985-000

Check Valves are installed in sections of piping in main/reserve systems to prevent the
actuation of the reserve system when the main system is discharged.
1/4-inch check valves are installed in the pilot manifold to ensure the proper number of
cylinders are discharged (see Figure 3-28).
06-236115-001
B
(valve outlet connection)
D
A
(system pipe connection)
Figure 3-27. Valve Outlet Adapter
Table 3-14. Dimensions, Valve Outlet Adapter
Size A
1½" 1½" to 11½ NPT
2" 2" to 11½ NPT
2½" 2½"to 8 NPT
DIRECTION
OF FLOW
2.00 in.
(51 mm)
Note: Install the valve with the arrow pointing in the direction of flow.
Figure 3-28. Check Valve
B
in
1.874" 2.69
2.500" 12 UNJ 3.12
3.00" 12 UNJ 3
1/4 in.-18NPT (TYP.)
0.81 in.
(21 mm)
HEX
3-25
Component Description
C
C D
mm in
68.33 2.50 HEX
79.25 3.00 HEX
76.2 3.75 HEX
October 2014
mm
63.5
76.2
95.2