4-Seasons valve

Effective areas in cm2 with different valve dimensions
Height: 30 cm 32 cm 34 cm 36 cm 40 cm Length
Eff. area: 1020 cm2 1110 cm2 1200 cm2 1300 cm2 1485 cm2 50 cm
1458 m3 1587 m3 1716 m3 1859 m3 2124 m3 m3 at 10 PA
1240 cm2 1350 cm2 1460 cm2 1570 cm2 1770 cm2 60 cm
1773 m3 1930 m3 2087 m3 2245 m3 2530 m3 m3 at 10 PA
1460 cm2 1590 cm2 1720 cm2 1860 cm2 2120 cm2 70 cm
2087 m3 2273 m3 2460 m3 2660 m3 3030 m3

m3 at 10 PA
1680 cm2 1830 cm2 1980 cm2 2140 cm2 2450 cm2 80 cm
2400 m3 2600 m3 2830 m3 3060 m3 3500 m3 m3 at 10 PA
1900 cm2 2070 cm2 2240 cm2 2420 cm2 2760 cm2 90 cm
2700 m3 2950 m3 3200 m3 3450 m3 3950 m3 m3 at 10 PA
Other sizes also available
Standard sizes (more readily available for delivery)
Width of house: till 14 m 14-16 m 16-18 m 18-22m from 22 m

Calculation for m3 air output of the different valve dimensions at 10 Pa vacuum: ....cm2 x 1,43.
Recommended air intake at 10 Pa vacuum: 0,7 cm2 per 1 m3 ventilation

Usual ventilation capacity: Net intake:
Broilers 7 m3 5 cm2
Mothers 14 m3 9,8 cm2
Layers 7 m3 5 cm2
Layers (breed) 5,5 m3 3,8 cm2


Height till 34 cm: A - 13 cm
from 36 cm : A - 15 cm

For batteries we can place air vents next to each other; part of the vents will be placed in opposite direction. They are used to direct the air downwards for maximum air distibution.


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