Pipe plug (12)
Wrap external threads of a 1/2-inch pipe plug (12) before screwing it into
Pipe elbow (13)
Remove quick disconnect coupling half (10)
from 90° pipe elbow (13).
Continue filliing low pressure heating boiler
assembly (8) until water flows from 90° pipe
Select a check valve (14) (with 1-inch pipe thread to 3/4-14 in NPT) from
Check valve (14)
the M5 test set. Remove the internal parts of the check valve (14) to make
a reducing bushing.