Area of use
Two-stage ventilation valve for release rates of 450 to 2000 m3/h in coarse and 20-40 m3/h in fine ventilation. For DN 80 and 100 housing material: EN-GJS-400-15, coating EKB; for DN 150 housing material S235 JR or P355 T1 and the coating consists of a wastewater-resistant Permacore thick micaceous iron ore coating
DN 100 - 800
PN 10
Housing: EN-JL1040, 1.0116
Coating: TPE, EGD
Product features
- First, air escapes during the first stage (coarse ventilation), until the medium closes off the first stage as it continues to flow.
- Any remaining air then escapes more slowly through the second stage (fine ventilation), until it is also closed.
- Gases collect, causing the fine ventilation to open once again until the medium closes this stage as well as it continues to flow.
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