Everything about Blast Valve totally explained
A
blast valve is used to protect a shelter, such as a
fallout shelter or
bunker, from the effects of sudden outside air pressure changes. A
nuclear weapon creates a shock wave, which may produce sudden pressure changes of more than an atmosphere (about 15 pounds per square inch) even several miles or kilometers from the detonation point. After the shock wave passes, a sudden negative pressure follows.
If such pressure waves enter a shelter, that'll likely do substantial harm to occupants and equipment. A blast valve is placed in air intake/exhaust pipes, that remains open normally, but automatically closes when strong pressure is applied in either direction.
A typical blast valve has entries of 6-12" diameter (150-300 mm), and a larger center section. Within the center section is a disk mounted on an axle, with weak springs that keep it centered, away from both entries. Pressure displaces the disk along the axle, until it plugs one entry or the other. After the blast, the springs return the disk to the center, re-opening the valve.
Further Information
Get more info on 'Blast Valve'.
|
External Link Exchanges
Do you know how hard it is to get a link from a large encyclopaedia? Well we're different and will prove it. To get a link from us just add the following HTML to your site on a relevant page:
<a href="http://blast_valve.totallyexplained.com">Blast valve Totally Explained</a>
Then simply click through this link from your web page. Our crawlers will verify your link, extract the title of your web page and instantly add a link back to it. If you like you can remove the words Totally Explained and embed the link in article text.
As long as your link remains in place, we'll keep our link to you right here. Please play fair - our crawlers are watching. Your site must be closely related to this one's topic. Any kind of spamming, dubious practises or removing the link will result in your link from us being dropped and, potentially, your whole site being banned. |
