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Date: Wed, 17 Jul 1996 08:30:10 -0400
To: emdx@ac*.ne*
From: Michael McDiarmid <Michael.S.Mcdiarmid.1@gs*.na*.go*>
Subject: Re: the quarter-turn myth
Cc: techdiver@terra.net

At 10:39 PM 7/15/96 -5, you wrote:

>What the hell is SO DIFFICULT with making a SIMPLE 1/4 turn valve???
>Gee, railroads have been using them on air brake couplings for the
>last century! And they're intuitive (not to mention touch-feelable):
>in line with the pipe, it's OPEN, perpendicular to the pipe, it's
>CLOSED. Why bother with zillion-turn valves that have to be either
>OPENED or CLOSED???? 
>
They do.  Scubapro markets a quarter turn valve overseas.  Two positions, ON
and Off.  It does not utilize a burst disk (interesting concept).

Mike

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