Positive Pressure Respirator?

ddavelarsen

ddavelarsen

Joined
Dec 7, 2000
Messages
5,179
Greetings! You folks are great, thanks for all the advice and warm nature.

I've been looking for some time for a positive pressure respirator -- that is to say, one that pumps filtered air into the mask. I have lung disease and don't want to get a bunch of dust all inside me, and I have a beard so a normal respirator won't seal.

Believe me, your lungs are intimately linked to your life, and I sure hope everyone includes this in their safety thinking.

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Dave Larsen
----
Love wouldn't be so blind
if the braille weren't so great.
-Armistead Maupin
 
I know Mike Draper made one for his Master Smith wife Audra. You might want to chase him down and ask how he did it.

(I added that Master Smith qualification in there because Audra is definitely not your average wife.)

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Jerry Hossom
www.hossom.com
 
We use a hood at my day job for electro-static painting that is hooked up to an air compressor.It works great and the guy's really prefer this to the standard type respirator.Dave
 
I worked a job in a shop about 4 years ago, welding copper nickel, (ver bad) we used a plastic mask, like they use for oxy, in the ambulance, hooked that to a breathing air regulator and a bottle of breathing air
DO NOT USE OXYGEN use breathing air or a compressor for that purpose.

We ran a airhose to a hook on our belts and rigged a quick disconnect from the line. we used the 1/4" tubing with the mask, this was a very comfortable arrangement. This requires a special reg. for the breathing air bottles too, to prevent someone from using oxygen in place of the breathing air.

I have heard good things about the setup that George was talking about.

Caution should be taken when setting up one of these in order to have everything right.

A good safety co. should set you up with everything you need.

another build it yourself, is a remote and filtered squirell cage fan with a length of vaccum cleaner type flex hose, fitting into the top of a hard hat so that the air is forced dowen over your face, behind your face shield.

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Sola Fide
 
3M makes a very nice one, may want to contact them directly.

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"Never hit a man unless you must, but if you must, knock him down" Teddy Roosevelt.

www.lameyknives.com
 
Dave,I have to agree with you about the lungs, Audra was in the hospital for 3 days last Feb. when her lungs shut down...kinda scary. I made her a positive supply respirator out of a diaphram type compressor, the type that is made for an airbrush, it is an oil-less design so you dont inhale any crud from the compressor. I used the medical tpye hose and fittings from an old nebulizer, plumbed it into a 3M type dust mask (07048). Set the compressor outside (in front of the air conditioner in the summer) she gets a supply of clean, cool, fresh air. With this set up she has had very few problems breathing, and can grind even the rankest smelling sheephorn without getting a whiff of it...EVERYBODY else leaves the shop...As a bonus the positive air pressure keeps your safety glasses from fogging up. We also have a dust collector system and an old evaporative type downdraft air conditioner fastened to the ceiling, install new filter materal, to catch the small stuff floating around in the air. Hope this helps, stay safe! Mike
 
Thank you for all the input. I did some digging online, the least expensive setup so far around $550, and it goes up from there.

I'll do some looking around for compressors and other stuff I'd need to build my own; somehow it never matters how much I accumulate, it's never enough!
smile.gif
But given all the great ideas here, I should be able to come with something.

Worst case I save my pennies and hold off on that nice grinder a bit longer... Maybe I can get a prescription and make it a tax deduction!

Thanks again,

------------------
Dave Larsen
--
Love wouldn't be so blind
if the braille weren't so great.
-Armistead Maupin
 
Try looking here for some inexpensive hood type :

www.jlindustrial.com

www.mscdirect.com

These are both industrial supply houses that should have PPR's much cheaper than 500 bucks. The one I used only costs around 200 bucks, and it's a helmet type with everything built in. Only thing on your belt is the battery pack. This is MUCH safer than building your own.
 
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