Product Overview

Certication
The 574 and 575 series BA type controllable reduced pressure
zone backow preventers are certied as complying with the
National and European product standards by the following
Certifying Bodies: NF - WRAS - KIWA - DVGW - SVGW - SITAC -
BELGAQUA - ACS - VA.
3/4 inch model
1/2 inch model
Construction details
Discharge air gap assembly
In compliance with ASSE 1013, proper location of the RPZ
backflow preventer is to ensure that adequate drainage is
provided to as not to cause damage to the surrounding
area. The discharge is not to be piped directly to a drain
without a proper air gap. The 574 series provides the PVC
air gap discharge assembly for this purpose.
Corrosion resistant materials of construction
All components are resistent to corrosion from potable
water. DZR low-lead brass, stainless steel and bronze
materials provide that protection to ensure long-time high
performance.
Easy maintenance
The backflow preventer must be periodically tested and
inspected during normal operating life to ensure proper
function. All internal components are accessible through
a single access cover, secured with stainless steel bolts,
for easy inspection, repair and replacement, including the
seats (3/4" model size), without removing from the pipeline.
Replacement check valves, discharge valve and discharge
air gaps are available separately.
0
5
10
15
20
25
0 5 10 15 20 25 30 35 40
PRESSURE LOSS (PSI)
FLOW RATE (GPM)
(3/4 inch)
574050A
574056A
(1/2 inch)
574004A
574064A
(kPa)
35
70
100
140
170
(LPM)
20 40 60 80 100
||||| |
120
|
140
Size Max. Cv
1/2 inch 3.4
3/4 inch 7.8
Flow capacity