Manifold El-Checks, P/N Wk-877690-000 And P/N 82-878743-000; Dimensions, Manifold El-Checks; Check Valves, Equivalent Lengths - Kidde Fire Systems ECS Manual

Component Description
3-3.7.4

Manifold EL-Checks, P/N WK-877690-000 and P/N 82-878743-000

Manifold El-Checks are installed at the discharge manifold in a multiple cylinder arrangement
to allow removal of any HFC-227ea cylinder from the manifold while still retaining a closed
system. The 2-inch El-check is used on the 10 through 350 lb size cylinders; the 2½-inch El-
check is used with the 600 lb size cylinder (see Figure 3-29 and Table 3-15 and Table 3-16).
Manifold El-checks are not intended to be used as check valves in main/reserve
systems. Improper use of equipment can cause system malfunction.
CAUTION
Part Number
WK-877690-000
82-878743-000
Part Number
81-800327-000
81-800266-000
WK-800443-000
81-800444-000
81-870152-000
81-870151-000
81-870100-000
06-118213-001
06-118058-001
WK-877690-000
82-878743-000
WK-877690-000 and
WK-283899-000
82-878743-000 and
WK-283900-000
October 2014
A
B
C
Figure 3-29. Manifold El-Checks
Table 3-15. Dimensions, Manifold El-Checks
Size
2 in 3.93 in (99.8 mm)
2½ in 4.96 in (125 mm)
Table 3-16. Check Valves, Equivalent Lengths
Nomenclature
Check Valve, ½ in NPT
Check Valve, ¾ in NPT
Check Valve, 1 in NPT
Check Valve, 1¼ in NPT
Check Valve, 1½ in NPT
Check Valve, 2 in NPT
Check Valve, 3 in NPT
Swing Check, 2 in
Swing Check, 3 in
2 in. El Check
2-1/2 in. El Check
2 in El check and Flex Hose
2½ in El check and Flex Hose
VALVE BODY
C
FOR CONNECTION
TO SYSTEM
ARROW
INDICATES FLOW
CHECK
A
4.88 in (123.95 mm)
5.76 in (146.3 mm)
Pipe Type
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
40 T & 40 W
3-26
B C
2 in-11½ NPT
2½ in-8 NPT
Equivalent Length
ft
7.0
17.0
12.0
51.0
57.0
165.0
795.0 242.31
13.4
13.0
12.2
13.5
16.0
17.5
06-236115-001
m
2.13
5.18
3.66
15.54
17.37
50.29
4.06
3.96
3.71
4.11
4.88
5.33