X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 07 Apr 2008 00:13:36 -0400 Message-ID: X-Original-Return-Path: Received: from elasmtp-dupuy.atl.sa.earthlink.net ([209.86.89.62] verified) by logan.com (CommuniGate Pro SMTP 5.2.1) with ESMTP id 2833721 for lml@lancaironline.net; Sat, 05 Apr 2008 16:25:32 -0400 Received-SPF: none receiver=logan.com; client-ip=209.86.89.62; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=ns+ZuO9MeMkP2CtIWhru+/pTo0hjEKrMDDynsR85dt+G0JyvByYh/rHIUCshOF9h; h=Received:Message-ID:From:To:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-ELNK-Trace:X-Originating-IP; Received: from [97.91.158.76] (helo=ccaselt2) by elasmtp-dupuy.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1JiEwW-0008Ab-OZ for lml@lancaironline.net; Sat, 05 Apr 2008 16:24:52 -0400 X-Original-Message-ID: <051e01c8975b$1aa94c60$6401a8c0@nvidia.com> From: "Colyn Case on earthlink" X-Original-To: Subject: IVP fresh air valve X-Original-Date: Sat, 5 Apr 2008 15:24:51 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_051B_01C89731.316A4960" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da940625e273ea84e312c663c383aafd7e589350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 97.91.158.76 This is a multi-part message in MIME format. ------=_NextPart_000_051B_01C89731.316A4960 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I'm looking for a source for an air valve which can be opened or closed = under ram air pressure and will withstand cabin pressurization when = closed. Let me first explain my application: When I got the airplane, the previous owner had closed off the fresh air = inlet on the vstab. So instead I ran some scat tubing from the cowl = inlet to a valve on the firewall. The valve I have is a home brew = device which is not working out very well. Mainly it has trouble = overcoming ram pressure when I need to close it. Can anyone point me at a device or source for a device that might work = in this application? thanks, Colyn ------=_NextPart_000_051B_01C89731.316A4960 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I'm looking for a source for an air = valve which can=20 be opened or closed under ram air pressure and will withstand cabin=20 pressurization when closed.

Let me first explain my = application:

When I got the airplane, the previous = owner had=20 closed off the fresh air inlet on the vstab. So instead I ran some = scat=20 tubing from the cowl inlet to a valve on the firewall. The = valve I=20 have is a home brew device which is not working out very = well. =20 Mainly it has trouble overcoming ram pressure when I need to close=20 it.

Can anyone point me at a device or = source for a=20 device that might work in this application?

thanks,

Colyn

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