Ames Fire & Waterworks 4000CIV Cast Iron Reduced Pressure Zone Assemblies - Manual (Page 2)

2
Basic Installation Guidelines
Figure 2
ValVE sIzE TypICal FlOw RaTEs
as sIzEd By FlOOR dRaIn ManuFaCTuRERs
dRaIn sIzE
in. in.
2 1 ⁄
2
” 55 gpm 2
3” 112 gpm 3
4” 170 gpm 4
6”, 8”, 10” 350 gpm 5
Figure 1
Model 4000CIV
Relief Valve Dis charge Rates
zO
nE
pRE
ssu
RE (
ps
IG)
FlOw RaTE (GpM)
2 1 ⁄
2
" – 3"
(65-80mm)
4" – 10"
(100-250mm)
175
150
125
100
75
50
25
0
0 100 200 300 400 500 600 700 800 900
Relief Valve
First
Check
second
Check
second
shutoff
Valve
Inlet
shutoff
Valve
2
1 ⁄
2
" – 10" (65-250mm)
Ames 2 1 /
2
" – 10" (65-250mm) 4000CIV
High Capacity Relief Series: Location and
Installation Considerations (cont.)
6. The relief valve module on 2 1 ⁄
2
" – 10" (65-250mm) 4000CIV Series
assemblies may be turned to discharge to the opposite side. To
do so, unbolt the relief valve and turn the relief valve discharge
port to the opposite side. Mount the high pressure hose on the
op po site side.
NOTICE
7. ASSEMBLY: If the backflow preventer is disassembled during
installation, it MUST be reassembled in its proper order. The gate
valve with the test cock is to be mounted on the inlet side of the
backflow preventer. The test cock must be on the inlet side of
the wedge. Please see above. Failure to reassemble correctly
will result in possible water damage due to excessive discharge
from the relief port/vent and possible malfunction of the backflow
preventer.
8. Prior to installation, thoroughly flush all pipe lines to remove any
foreign matter.
9. START UP at Initial Installation and After Servicing: The down-
stream shutoff should be closed. Slowly open upstream shutoff
and allow the backflow preventer to fill slowly. Bleed air at each
test cock. When backflow preventer is filled, slowly open the
down stream shutoff and fill the water supply system. This is nec-
essary to avoid dislodging O-rings or causing damage to internal
com po nents.
10. TEST: The Series 4000CIV backflow preventer may be tested by
a certified tester at the time of installation in order to ascertain
that the assembly is in full working order and may be relied upon
to protect the safe drinking water as per applicable standard.