Installation, Operation and
Maintenance Manual
IOM-A-Deringer 20G/20GX/30G/30GX_6-8
Deringer
™
20G/20GX/30G/30GX
Double Check Valve/Double
Check Detector Assemblies
Size: 20G/30G: 6"&8"
20GX/30GX: 4"&6"
WARNING
!
Read this manual BEFORE using this equipment.
Failure to read and follow all safety and use information can
result in death, serious personal injury, property damage, or
damage to the equipment.
Keep this manual for future reference.
You are required to consult the local building and plumbing
codes prior to installation. If the information in this manual
is not consistent with local building or plumbing codes,
the local codes should be followed. Inquire with governing
authorities for additional local requirements.
WARNING
!
This list is the recommended tools for installation. Other
versions of the same tool can be used. For example, allen
wrenches instead of allen drive sockets.
Tools Required
15
/
16
" Socket
1
1
/
8
" Socket
Wood Block 2" x 4" x 5"
Wood Block 1" x 2" x 16"
#2 Phillips Head Screwdriver
#2 Flathead Screwdriver
Ratchet
Adjustable Wrench
Deringer Test Cock Wrench
Slip-joint Pliers
