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HYDRAULIC CIRCUIT
12.5. CHECK VALVE
Attached to the unit there is a water check valve (non return
valve). This component is a safety device to protect the system
against back pressure, back flow and back syphonage of non-
potable water into service pipe, plants and equipments.
This valve shall be installed at site.
Main Characteristics:
- Maximum working Pressure: 16bar
- Maximum working Temperature: 70ºC (short term 90ºC)
- Threaded connection R1/2"
- Available test and drain plugs 1/4"
- Length: 137mm
- Kvs value: 6
- Weight: 0.24kg
12.6. PUMP CURVES
PMML138A_R1-eng-fre.indb 33
RWM-3FSN2E
Water flow pump range (m
/h)
3
RWM-4FSN2E
Water flow pump range (m
/h)
3
RWM-5FSN2E
Water flow pump range (m
/h)
3
Max. speed
Med. speed
Nominal Heating water flow
Installation guidelines:
1. Note flow direction (indicated by arrow) when installing the
check valve.
2. In a drinking water supply the check valves are fitted
immediately after water meter. This position ensures
optimum protection for the drinking water supply.
3. Install in horizontal pipework with test plugs directed
downwards. This position ensures optimum protection
efficiency and is the best for testing the valve.
4. Shutt off valves should be fitted on each side of the check
valve for easier and faster valve testing.
5. The installation location should be protected against frost and
be easily accessible.
RWM-3FSN2E - 4.5H1
Water flow pump range (m
RWM-4FSN2E - 6H(1/3)
Water flow pump range (m
RWM-5FSN2E - 6H(1/3)
Water flow pump range (m
PMML0138A-rev.1 - 11/2009
/h)
3
/h)
3
/h)
3
33
19/11/2009 14:45:54
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