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Showing results 1 to 11 of 11
Search took 0.00 seconds. Search: Posts Made By: osirissail
Forum: Plumbing Systems and Fixtures 08-01-2012, 20:04
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

Don't get your feathers in a fluff - I was not insulting you but making the point that all too many people are too busy with other things to keep up with all the "supposed to do . . ." maintenance...
Forum: Plumbing Systems and Fixtures 08-01-2012, 19:19
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

I must admit that my Marelon seacocks are more than a decade old and do not have any "locking pin" nor are they "glued." I will have to examine carefully what is currently on the shelves these days....
Forum: Plumbing Systems and Fixtures 08-01-2012, 18:25
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

Why would you dismount (remove the through-hull) of a flanged Marelon Seacock for a broken handle?

The Marelon flanged seacocks come in 3 parts, base, ball and body (not counting the hose...
Forum: Plumbing Systems and Fixtures 06-01-2012, 06:23
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

Unfortunately, that is not true. See: Boat Marine Plumbing Ball Valve Thru Hull (https://www.forespar.com/products/boat-marine-plumbing-ball-valve-thru-hull.shtml)

"All valves sold throughout the...
Forum: Plumbing Systems and Fixtures 05-01-2012, 14:57
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

Comments added in red. Some of the questions I feel are not relevant and I doubt that anybody on this forum is set up to do lab tests on the materials in any valid way. I suspect we are all basing...
Forum: Plumbing Systems and Fixtures 24-12-2011, 10:02
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

Diverging off the primary discussion - there are non-metallic hydraulic lines made from some form of really high pressure "plastic" that can be used instead of copper tubing. They are shown in the...
Forum: Plumbing Systems and Fixtures 24-12-2011, 09:02
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

Actually Marelon comes in 2 types - actual "Seacocks" which are normally flanged and made to be attached using "Through-hull" fittings and have threading to match standard "Through-hull" fittings.
...
Forum: Plumbing Systems and Fixtures 23-12-2011, 19:35
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

I believe the Schedule 40/80 applies to PVC pipe and joints not valve-type fittings. I have never seen any "second" version of ball valves, etc. From the photo below the NPT threaded parts seem to...
Forum: Plumbing Systems and Fixtures 23-12-2011, 15:18
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

I forgot to paste this graphic to my post #9. It shows the comparative properties of all the different seacock materials. What is of special interest is the notes down on the bottom left side where...
Forum: Plumbing Systems and Fixtures 23-12-2011, 06:11
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

Wow, there are some sharp-eyed folks on this forum! I missed the copper pipes and then the really unacceptable electrical wiring in the first photo. But I get the impression the boat is still...
Forum: Plumbing Systems and Fixtures 22-12-2011, 19:17
Replies: 63
Views: 17,539
Posted By osirissail
Re: PVC Seacocks..?

The concern on a vessel is breaking a seacock and then the vessel sinks. So the standards are set such that side impacts or pressure on the seacock will not break it. For instance, if you are...
Showing results 1 to 11 of 11

 
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