Return-Path: Received: from sam.the-i.net ([206.136.176.251]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Mon, 4 Dec 2000 10:28:34 -0500 Received: from pavilion (ccd168.the-i.net [216.86.8.168]) by sam.the-i.net (Vircom SMTPRS 4.4.184) with SMTP id for ; Mon, 4 Dec 2000 09:36:30 -0600 Message-ID: <000f01c05e08$bbbf4e40$a80856d8@pavilion> From: "J. N. Cameron" To: "Lancair List" Subject: Sight gauges Date: Mon, 4 Dec 2000 09:41:51 -0600 X-Mailing-List: lancair.list@olsusa.com Reply-To: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> In light of David Jones' comments, let me modify my statement about using Pyrex for a sight gauge. Lots of commercial flowmeters are made with glass tubes, but the glass sections are very thick-walled, and are enclosed in a housing. The housing is usually metal on two sides with polycarbonate sections screwed onto the front and back. At the top and bottom there are usually large metal blocks with O-ring seals to the glass, so the chances of glass breakage are minimized. Like anything else, I guess, a glass sight gauge would have to be carefully engineered. Other kinds of plastic tubing would probably work OK. In Cole-Parmer's catalog, they list a new Tygon 2075 tubing that is supposed to be OK with " . . MEK and other highly aggressive chemicals . . .." Unfortunately, it only seems to be sold by the 50' roll, which is $80 for the 1/4" I.D. size. Jim Cameron, ES builder >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html LML Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>