Technical Data - Kemper PROTECT BA Einbau- Und Bedienungsanleitung

The higher the classification, the greater the
risk potential. For each category, DIN EN 1717
stipulates specific protection valves. The Backflow
Preventer BA, Figure 361 01 is approved without
restriction for use up to and including Category
4. A continual bacterial risk (Fluid Category 5) in
extant piping systems must not exist. The KEMPER
PROTECT RPZ Outlet Valve Type BA is subdivided
into 3 zones. In Zone 1, the pressure is higher than
in Zone 2 and there again higher than in Zone 3.
A drain valve is connected to Zone 2, which opens
latest when the pressure difference between
Zones 1 and 2 has decreased to less than 0.14
bar. The water from Zone 2 flows outdoors. That
precludes the risk of back-pressure or siphon back
flow in the supply network.
2

Technical data

Materials
Housing
Anti-pollution check-valve
Other interior parts
Compression spring
Compression spring
Drain valve housing
Drain valve, other interior parts
Drain valve, compressed spring
Drain valve, membrane
Drain valve, sealing disc
Ball valve
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The pipeline is interrupted and the drinking water
network is protected. Intermittent dripping from
the BA Backflow Preventer at the drain valve
is not necessarily a malfunction. Under such
circumstances, the BA Backflow Preventer sepa-
rates as intended! Normally (normal functioning
with pressure fluctuations), the vent hole of the
middle pressure chamber only allows a few drops
through. During malfunctions, the vent hole can
allow the full volume flow of the service pipe
through. For that reason, dimension the wastewa-
ter connection to be sufficiently large according
to DIN EN 12056 and DIN 1986-100. Assume the
volume flow that could arise through the service
pipe on the backflow preventer BA (pay attention
to the nominal flow rate!).
Stainless steel
Stainless steel
Stainless steel
Stainless steel
EPDM
Stainless steel
POM
Stainless steel
EPDM
EPDM
Stainless steel