air-admittance valve DallVent Maxi, DN 70/DN 90/DN 100

conforming to EN 12380
for internal venting of soil and waste systems

specification:
- removable insect screen
- integral thermal insulation (frost proof to -20°)
- lip seal for connection to DN 70, DN 90 and DN 100 vent pipes

material:
ABS/PP
air flow capacity 32.7 l/s
classification AI (table 1, EN 12380)