Re: [PSUBS-MAILIST] Depth\Pressure Gauge

Hi James,

I think it was Brian Ryder that had a Grainger depth gauge screwed into a through hull

with a "solder sucker" on the seaward side. This was all filled with oil & was very accurate.

He posted me an image of it ages ago. He has a picture of the gauge on his project page but not

with solder the sucker. I guess that's the purpose of Dan's diaphram; fill it with oil so you aren't exposing

the gauge to sea water

Regards Alan

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

From: James Frankland

To: personal_submersibles@psubs.org

Sent: Wednesday, April 27, 2011 3:25 AM

Subject: [PSUBS-MAILIST] Depth\Pressure Gauge

Hi All,

I have a couple of questions regarding plumbing as im at that stage now, at last. Ive nearly completed everything else.

1. Depth Gauge. Where is this supposed to go on the standard K350? Dont tell me im going to have to add another 1/2 inch pipe nipple pleeeaasse. I've stuck fairly rigidly to the plans but looking at them now, i cant see where its supposed to go. Also looking at pictures of other peoples subs, they all seem to have the depth gauge mounted to a standard 1/2 inch nipple. I cant roll my sub around any more so i really dont want to have to weld in another pipe nipple....Better get practicing my overhead welding...? Could i pipe it off the high pressure air for the forward tank maybe?

2. Same subject. Dan's Persistance seems to have some sort of diaphram on the other end of the depth gauge inlet. Whats that?

3. There seems to be litterally hundreds of different pressure gauges i could get. Anyone recomend anything good?

Thanks as always
James