2
Indoor Installation
Ames Series 2000B Double Check Valve
Check local codes for installation requirements. Pipe lines
should be thoroughly flushed to remove foreign material
before installing the unit. A strainer should be installed as
shown, ahead of backflow preventer to prevent disc from
unnecessary fouling. Install valve in the line with arrow on
valve body pointing in the direction of flow.
For indoor installations, it is important that the valve be easily
accessible to facilitate testing and servicing. Do not install in a
concealed location.
CAUTION:
Do not install with strainer when backflow
preventer is used on seldom used water lines which are called
upon during emergencies, such as fire sprinkler lines, etc.
It is important that Series 2000B be tested periodically in
compliance with local codes, but at least once a year or more
often depending upon system conditions. Regular inspection,
testing and cleaning assurs maximum life and proper product
function.
Note Fire Protection System Installations: The National Fire
Protection Agency (NFPA) Guidelines require a confirming flow test
to be conducted whenever a “main line” valve such as the shutoff
valves or a backflow assembly have been operated. Certified testers
of backflow assemblies must conduct this test. The trim valves of
the detector meter bypass line, on assemblies so equipped, should
be shut off during the confirming flow test. When the test is
completed the trim valves must be retuned to a fully open position.
Basic Installation Instructions
Main
First Shutoff
Valve
First Shutoff
Valve
First Shutoff
Valve
Strainer
Outside Installation
Consult Local codes for Approval
Ames
2000B
Ames 2000B
Vertical Flow-up or
vertical Flow-down
Installation
(Flow-up shown)
Parallel Installation
Consult Local codes for Approval
Two or more Series 2000B smaller size valves may be piped in
parallel (where approved) to serve a larger supply pipe main. This
type of installation is employed whenever it is vital to maintain a
continuous supply of water/where interruptions for testing and
servicing would be unacceptable. It also has the advantage of
providing increased capacity where needed beyond that provided
by a single valve and permits testing or servicing of an individual
valve without shutting down the complete line.
For two valve installations the total capacity of the devices
should equal or exceed that required by the system.
The quantity of valves used in parallel should be determined
by the engineer’s judgement based on the operating
conditions of a specific installation.
Meter Box
Installation
Min. 12"
Ames
2000B
Above ground enclosure installation
Ames
2000B
Main
RPISA2000B.qxd 1/12/09 11:29 AM Page 2
