Honeywell BA300, BA300-80ZVDS, BA300-...A Product Specification Sheet

EN0H-1242GE23 R1117

Backflow Preventers

BA300

Backflow Preventer

with flanged connections

APPLICATION

Backflow preventers of this type are suitable for the
protection of drinking water systems against back pressure,
back flow and back syphonage.

Fluids up to and including liquid category 4 to EN 1717 are
protected.

They can be used for residential buildings, industrial and
commercial purposes within the scope of their specification.

The powder-coated ductile iron housing provides increased
corrosion protection.

APPROVALS

• DVGW

• BELGAQUA

• NF

• KIWA

• WRAS

• SVGW

• VdS (BA300-80ZVDS)

• VA-ETA

SPECIAL FEATURES

• Optimal protection of the drinking water supply system

• Easy access to all internal components

• Powder-coated inside and outside - Powder used is

physiologically and toxicologically safe

• Easy Maintenance due to optimized construction

• Triple security - two check valves and a discharge valve

separate the backflow preventer into three pressure
zones

• Few individual parts

• Light weight

• Standardised discharge connection

• All materials are ACS approved

• All materials are KTW approved

• Approved by OTH (Hungary)

TECHNICAL DATA

Media

Medium: Drinking water

Connections/Sizes

Connection size: DN65 - DN200

Discharge pipe connection: DN150

Pressure values

Min. inlet pressure: 1.5 bar

Max. operating pressure: 10.0 bar

Operating temperatures

Max. operating temperature
medium:

Specifications

Installation position: Horizontal with discharge

65 °C (WRAS 60 °C)

valve downwards

Product Specification Sheet • EN0H-1242GE23 R1117 • Subject to change 1

BA300 - Backflow Preventer

CONSTRUCTION

Overview Components Materials

1 Three ball valves for the

connection of a differential
pressure gauge

2 Inlet/Outlet check valves Stainless Steel
3 Housing Ductile iron, powder-coated

4 Discharge valve CW626N with stainless steel

5 Pressure control line Polyethylene with stainless

Not depicted components:

Diaphragm EPDM

Sealing washers EPDM

Brass

with polyamide

seat

steel braid

(BA300-80ZVDS stainless
steel)

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 Value

Environment: clean, dry and dust free

Min. ambient temperature: 5 °C

Max. ambient temperature: 55 °C

Min. ambient relative
humidity:

Max. ambient relative
humidity:

*non condensing

25 % *

85 % *

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

2 Product Specification Sheet • EN0H-1242GE23 R1117 • Subject to change