PMI Vent
We have become a distinguished name in the market for undertaking fabrication work for a wide range of Flashing and Trims. Suitable for construction of buildings and related structures, these flashing and trims are custom designed for our clients to match their exact requirements.
No. of Ventilators required =Ventilation Rate (Q)/Exhaust Capacity
- Required Ventilation rate ventilated (H3) =Volume x Air Charge Rate/600
- Volume of space to be ventilated (H3)= LxWxH
- Select Air Change Rate from Table A
- Select Exhaust Capacity from Table B as per your requirement
- Temperature differences (OC) and wired velocity


TABLE A : REQUIRED AIR CHANGE RATES
Type of Building | Air Change@per hour | Type of Building | Air Change@per hour |
Ware House | 4 – 6 | Engine room /Laundary & Plastic Fatory | 10 - 30 |
TextileMill/ Auditorium | 8 – 15 | Engineroom /Laundary & Plastic Fatory | 15 - 40 |
Paper Mill / Brewery Oil Mill / Packing Room | 8 – 30 |
TABLE A : REQUIRED AIR CHANGE RATES
WIND Velocity (mph) | 5 | 8 | 10 |
Temp Diff. OC | 3 | 5 | 10 | 3 5 10 | 10 |
ModelNo | STACK | 8 | Exhaust Capacity in | cpm |
HAV.500 | 10 20 30 |
939 | 1000 | 1102 | 1436 1498 1600 | 1792 1858 1958 |
1005 | 1084 | 1216 | 1503 1582 1714 | 1859 1938 2070 |
1058 | 1154 | 1314 | 1556 1652 1812 | 1916 2010 2168 |
1107 | 1216 | 1394 | 1605 1714 1896 | 1961 2070 2252 |