Method Of Operation; Transportation And Storage - Honeywell BA300 Series Product Specification Sheet

BA300 - Backflow Preventer
CONSTRUCTION
Overview

METHOD OF OPERATION

BA type backflow preventers are divided into three pressure
zones. The pressure in zone is higher than in zone  ,
which in turn is higher than in zone  . A discharge valve is
connected to zone  which opens at the latest when the
differential pressure between zones  and  drops to
0.14 bar. The water from zone  discharges to atmosphere,
both check valves close and therefore separate zone  from
zone  and  . In this way the danger of back pressure or
back syphonage into the supply network is prevented. The
pipework connection is interrupted and the drinking water
network is protected.

TRANSPORTATION AND STORAGE

Keep parts in their original packaging and unpack them
shortly before use.
The following parameters apply during transportation and
storage:
Parameter
Environment:
Min. ambient temperature:
Max. ambient temperature:
Min. ambient relative
humidity:
Max. ambient relative
humidity:
*non condensing
2
Value
clean, dry and dust free
5 °C
55 °C
25 % *
85 % *
Components
Three ball valves for the
1
connection of a differential
pressure gauge
2 Inlet/Outlet check valves
Housing
3
4 Discharge valve
5 Pressure control line
Not depicted components:
Diaphragm
Sealing washers
INSTALLATION GUIDELINES
Setup requirements
• Install shut-off valves before and after backflow
preventer
• Install backflow preventer downstream of the filter or
strainer
– This protects the appliance against dirt
• Install in horizontal pipework with the discharge valve
downwards
• Ensure good access
– Simplifies maintenance and inspection
• In order to avoid flooding, it is recommended to arrange
a permanent, professionally dimensioned wastewater
connection
• The installation environment should be protected
against frost and ventilated well
• Install discharge pipework which has adequate capacity
• These armatures need to be maintained regularly
Product Specification Sheet • EN0H-1242GE23 R1117 • Subject to change
Materials
Brass
Stainless Steel
Ductile iron, powder-coated
with polyamide
CW626N with stainless steel
seat
Polyethylene with stainless
steel braid
(BA300-80ZVDS stainless
steel)
EPDM
EPDM