Re: [PSUBS-MAILIST] Pressure testing with a vacuum pump

["Alan James" <alanjames@xtra.co.nz>]

Yeah, don't rub it in, I'm a bit technically challenged in some areas.

Glad you people are there to put me right.

Alan

----- Original Message -----

From: ojaivalleybeefarm @dslextreme.com

To: personal_submersibles@psubs.org

Sent: Friday, January 21, 2011 9:22 AM

Subject: Re: [PSUBS-MAILIST] Pressure testing with a vacuum pump

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On Tue, Jan 18, 2011 at 1:42 PM, Alan James <alanjames@xtra.co.nz> wrote:

Hi,

I just started thinking about the idea of doing a preliminary pressure test on my hull (when it's made)

by fitting a vacuum pump to the outside. This would be done on the bare hull but with the dome view port in place.

I would need to have a negative pressure of 250 psi.

Does this sound reasonable? Are there cheap vacuum pumps that can produce this negative pressure or are there

air pumps that I could modify & attach the intake to the hull ???

Or has anyone done this?

Regards Alan