Pressure drop information for extractor vents

NB It is important not to reduce the exhaust pipe diameter through the roof terminal, i.e. don't take a 125mm pipe out through the 100mm diameter roof terminal. 

Tileline Tilevent
Airflow resistance when used as SVP/extract terminals  Calculated using SUA (Soil Universal Adaptor).
54m³ /hr (15 litres/sec) 17 Pa
108m³ /hr (30 litres/sec) 67 Pa
216m³ /hr (60 litres/sec) 265 Pa


TileLine Half Round Ridge  Vent
Airflow resistance when used as SVP/extract terminals
100mm Pipe diameter
54m³ /h (15 litres/sec) 2.5Pa 
108m³ /h (30 litres/sec) 8.1Pa 
216m³ /h (60 litres/sec) 29.6Pa

125mm Pipe diameter
54m³ /h (15 litres/sec) 2.3Pa 
108m³ /h (30 litres/sec) 9.3Pa 
216m³ /h (60 litres/sec) 36.9Pa

TileLine 90^o Angle Ridge Vent
Airflow resistance when used as SVP/extract terminals
100mm Pipe diameter
54m³ /h (15 litres/sec) 6.7Pa 
108m³ /h (30 litres/sec) 26.2Pa 
216m³ /h (60 litres/sec) 103.8Pa

125mm Pipe diameter
54m³ /h (15 litres/sec) 5.8Pa 
108m³ /h (30 litres/sec)26.5Pa 
216m³ /h (60 litres/sec) 110.3Pa

TileLine 105^o Angle Ridge 
Airflow resistance when used as SVP/extract terminals
100mm Pipe diameter
54m³ /h (15 litres/sec) 3.7Pa 
108m³ /h (30 litres/sec) 14.5Pa 
216m³ /h (60 litres/sec) 57.2Pa

125mm Pipe diameter
54m³ /h (15 litres/sec) 4.4Pa 
108m³ /h (30 litres/sec)16.4Pa 
216m³ /h (60 litres/sec) 63.2Pa

TileLine 115^o Angle Ridge 
Airflow resistance when used as SVP/extract terminals
100mm Pipe diameter
54m³ /h (15 litres/sec) 3.2Pa 
108m³ /h (30 litres/sec) 11.7Pa 
216m³ /h (60 litres/sec) 44.9Pa

125mm Pipe diameter
54m³ /h (15 litres/sec) 3.9Pa 
108m³ /h (30 litres/sec)13.9Pa 
216m³ /h (60 litres/sec) 52.9Pa