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The
ASR-50-OP wall mount version
$145.00
(USD)
ASR-50-OP-W
Wall Mount
Click on the star to order
The ASR-50-OP ceiling mount version
$145.00
(USD)
Click
on the star to order
ASR-50-OP-C Ceiling Mount
Click
on the image above
to download the installation and operation manual for the
Overpressure Relief Valve (PDF)
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This
overpressure relief valve is critical to creating an overpressure
in the protected space by adding the proper, metered resistance
to the outgoing airflow. The valve is normally closed and
will not open unless the air pressure inside the shelter
is slightly greater than the outside air pressure.
This
gives you true ventilation - air in through
the Safe Cell and out through this valve preventing the
buildup of carbon dioxide exhaled by the occupants. Carbon
dioxide poisoning will incapacitate and kill the occupants
of an enclosed space without ventilation long before oxygen
deprivation.
Please
specify at time of ordering whether or not you are mounting
this valve directly on the wall or ceiling - or if you are
going mount it to the blast
valve. We will configure your overpressure relief valve
so it either has a mounting flange for the wall or ceiling
or a slip-fit connection for the blast valve.
A
good rule of thumb is that if you are underground, you need
blast valves and if you are above ground, you do not - unless
you have a hardened structure above ground. There is not
much need for blast valves unless you have a hardened, blast
resistant structure.
Any
protected space will benefit from this valve, especially
if it is well sealed, then this overpressure relief valve
is a necessity - if you want true ventilation.
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