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ALPHA RELIEF AIR VENTS
ROOF MOUNTED FANS
D
© FANTECH
2016
D-10
The Alpha Relief Air Vents have been designed for air intake
and exhaust applications or control of pressure within buildings.
They may be used in a ducted system where the fan is mounted
remotely to the cowl. Units are fitted with bird mesh as standard
to eliminate the risk of debris and birds entering the building.
There are 9 models in the range capable of handling air flows
from 0.04 to 6.0m
3
/s.
Typical Applications
May be used as the air intake and discharge point where the fan
is mounted remotely.
To control relief air and the pressure within buildings.
Features
O
Lightweight, corrosion-proof construction.
O
The pressure losses are approximately the same for
exhaust and air intake.
O
Protective bird-mesh guards are fitted as standard.
O
'MRV' and 'RV' units are designed for curb mounting.
O
The 'PFR' units are designed to suit a range of metal deck roofs.
O
Can be mounted at angles up to 30°.
Construction
MRV1, MRV2 and sizes 1 to 4 - Base and cowl are made of
UV-stabilised plastic.
Sizes 5 & 6 - Base is made of fibreglass with a UV-stabilised
plastic cowl.
Steel components have a corrosion-resistant finish.
Bird-mesh guards are fitted as standard.
The Relief Air Vents shall be of the MRV/RV/PFR Series (delete as
appropriate) as designed and manufactured by Fantech Pty Ltd.
Each unit shall incorporate bird-mesh guards and be constructed
from UV-stabilised plastic, or fibreglass and UV-stabilised plastic.
Steel components shall have a corrosion resistant finish.
MRV & RV - Relief Vents
Select model required to handle the air quantity nominated from
the performance graph.
PFR - Relief Vent
For the PFR30, use the How to Order below.
q
V
- Volume Flow, m /s
3
p
- Pressure Loss, Pa
0.06 0.1
0.4 0.6 1.0 2.0 4.0 6.0
0.2
20
10
30
40
60
100
Relief
Vents
MRV1
MRV2 & PFR30
RV1
RV2
RV3
RV4
RV5
RV6
E
A
B (
ma
x.)
C
D
MRV & RV - Relief Vents
SUGGESTED SPECIFICATION
HOW TO ORDER
DIMENSIONS
DESCRIPTION
Model A
B C D E
App.
wt.
kg
App.
vol.
m
3
Min.
Free
Area
m
2
MRV1
210 260 30 200 310 1.0 0.02 0.017
MRV2
350 410 55 350 570 3.0 0.14 0.073
RV1
400 500 95 380 670 5.0 0.21 0.110
RV2
510 610 90 450 770 7.0 0.32 0.170
RV3
670 770 90 560 890 11.0 0.52 0.270
RV4
780 980 85 640 1180 16.0 1.10 0.410
RV5
900 1100 85 700 1395 20.0 1.60 0.530
RV6
1100 1360 85 700 1640 23.0 2.20 0.820
PFR30..
See Below
640 -
265 570 3.0 0.13 0.073
Dimensions, mm
PFR - Relief Vent
Trimdek**
620
Klip-Lok 406** 440
Klip-Lok 700** 497
Custom Orb** 500
Spandek**
490
Brownbuilt 900
†
508
** Registered trade mark of Bluescope Steel Limited
† Available in New Zealand only
Scan the QR
code to view
more
information
online.
PFR Dimensions, mm, A*:-