Component Description
October 2014 3-26 06-236115-001
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).
Figure 3-29. Manifold El-Checks
CAUTION
Manifold El-checks are not intended to be used as check valves in main/reserve
systems. Improper use of equipment can cause system malfunction.
Table 3-15. Dimensions, Manifold El-Checks
Part Number Size A B C
WK-877690-000 2 in 3.93 in (99.8 mm) 4.88 in (123.95 mm) 2 in-11½ NPT
82-878743-000 2½ in 4.96 in (125 mm) 5.76 in (146.3 mm) 2½ in-8 NPT
Table 3-16. Check Valves, Equivalent Lengths
Part Number Nomenclature Pipe Type
Equivalent Length
ft m
81-800327-000 Check Valve, ½ in NPT 40 T & 40 W 7.0 2.13
81-800266-000 Check Valve, ¾ in NPT 40 T & 40 W 17.0 5.18
WK-800443-000 Check Valve, 1 in NPT 40 T & 40 W 12.0 3.66
81-800444-000 Check Valve, 1¼ in NPT 40 T & 40 W 51.0 15.54
81-870152-000 Check Valve, 1½ in NPT 40 T & 40 W 57.0 17.37
81-870151-000 Check Valve, 2 in NPT 40 T & 40 W 165.0 50.29
81-870100-000 Check Valve, 3 in NPT 40 T & 40 W 795.0 242.31
06-118213-001 Swing Check, 2 in 40 T & 40 W 13.4 4.06
06-118058-001 Swing Check, 3 in 40 T & 40 W 13.0 3.96
WK-877690-000 2 in. El Check 40 T & 40 W 12.2 3.71
82-878743-000 2-1/2 in. El Check 40 T & 40 W 13.5 4.11
WK-877690-000 and
WK-283899-000
2 in El check and Flex Hose 40 T & 40 W 16.0 4.88
82-878743-000 and
WK-283900-000
2½ in El check and Flex Hose 40 T & 40 W 17.5 5.33
A
B
VALVE BODY
C
C
CHECK
FOR CONNECTION
TO SYSTEM
ARROW
INDICATES FLOW
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