Pyramid

The Pyramid out blowing hood is designed specifically for out blowing the exhaust air on the roof of the buildings. The air is blown upwards with a high velocity and small pressure loss.

The unique construction of the Pyramid prevents water penetrating into the duct system.

  • Product code
  • Technical information
  • Autocad blocks

Product code

All internal and external components are fabricated in aluminium zinc steel sheets, alternative materials are stainless steel and galvanized steel (on request).
Also available painted (RAL colors).
pyramid code eng



Dimensions


 Size A B C H ø D E  Air flow rate Pressure loss  Weight 
 200  420 240  180  335 212 220-400 l/s 40-120 Pa 10 kg
 250  420 240  180  335  262 300-550 l/s 40-120 Pa 10 kg
 315  670  390  220  465  327  – 500-1000 l/s 40-120 Pa 15 kg
 400  670  390  220  465  –  400 750-1300 l/s 40-120 Pa 15 kg
 500  840  490  250  550  –  500 900-1500 l/s 35-90 Pa 30 kg
 630  1055  615  290  660  –  630 1500-2100 l/s 40-90 Pa 50 kg
 800  1340  780  330  810  –  800 2100-3800 l/s 40-120 Pa 70 kg
 1000  1675  975  380  980  –  1000 3800-5500 l/s 40-90 Pa 100 kg
1250  2095 1220  450  1220  –  1250 5500-9000 l/s 50-120 Pa 150 kg

Pyramid dimensions

 


Pyramid velocity of out blowing


Velocity of out blowing

Formula for the velocity of out blowing

ulospuhallusnopeus kaava

 

v= velocity of out blowing, m/s
d= ductdiameter, m
p= total pressure loss, Pa
k= coefficient

Duct size
 ø200  0.092
 ø250  0,120
 ø315  0,252
 ø400  0,304
 ø500  0,548
 ø630  0,852
 ø800  1,380
 ø1000  2,120
 ø1250  2,880