dosatron D 20 Manual De Instrucciones página 44

AUTOMATICAL ANTI-SIPHONING DEVICE
Automatic anti-siphon valve :
- this automatically recreates normal atmospheric pressure in the Dosatron
in the event of an accidental vacuum in the line (Fig. 9)*.
Its use depends on the regulations in force in your country.
- You must comply with the local water authority's requirements.
Fig. 9
*i.e.:
- if the water outlet is lower than the inlet.
- if the water cut-off is before the dispenser.
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DosatRoN INteRNatIoNaL / 44