User Guide
Deringer
™
For all Deringer Series Valves
Important Installation
Information Read before
installing
For additional detailed maintenance and repair instructions,
including videos, visit BackflowDirect.com/downloads.html
For Deringer Models 20/20X/30/30X/40/40X/50/50X
Install with FLEX Couplings or Flange Adapters Only.
DO NOT
use RIGID Couplings or Groove Reducing
Couplings!
Micro Bypass Orientation
Please follow these instructions to properly orient the
meters on the Deringer 30 & 50 micro bypass assemblies:
1. The Deringer water
meters are rotated 90
degrees during shipping
to protect the plastic
register from damage.
2. Using an adjustable
wrench loosen the meter
couplings on both sides
of the meter and rotate
the meter into the proper
orientation.
3. Using an adjustable
wrench tighten the meter
couplings on both sides
of the meter (proper
meter orientation).
Flange
Adapters
FLEX
Couplings
RIGID
Couplings
Groove Reducing
Couplings
For Deringer Models 30/30X/30G/30GX/50/50X/50G/50GX
FLOW
UserGuide-A-Deringer
WARNING: Make sure to thoroughly flush out water lines prior to installation of a Deringer. If water lines are NOT thoroughly flushed, debris will damage the check and
relief valves and will not be covered under warranty.
WARNING
!
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
!
