Zehnder Pumpen Kompaktboy Duplex 1,1 D 400V Mode D'emploi page 58

Kompaktboy Single en English
4.2.2 Component description Kompaktboy 3.0
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With the Kompaktboy 3.0, the integrated check valve is omitted. Instead, the supplied
ball check valve made of grey-cast iron must be mounted on the pressure outlet.
Chapter 5.5.2 "Pressure line with the Kompaktboy 3.0"
Kompaktboy 3.0 with put-on ball check valve made of grey-cast iron
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