Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 11-08-2011, 00:54   #16
Registered User

Join Date: Mar 2009
Location: Sydney
Boat: Lexcen 40 - Leverage
Posts: 383
Re: Watermaker High Pressure Hose Length ?

Originally Posted by delmarrey View Post
If you're willing to hard plumb you could use SS tube or refrigeration copper tube. The fittings should be a bit less and the tube a lot less. You just have to get the bends right.

BTW- Teflon tape is generally for tapered threads (pipe) to prevent galling and add to the seal. Straight thread fittings use a lip seal of some sort, the threads are to just draw it tight, not seal.

I would love to hard-plumb, but there's no way I could get it through all the bends in one piece, I would need to do it in a bunch of pieces. :\ Interesting that copper would also work though, I would have thought it too thin. Are we talking just flared connections or sweated/soldered? Or either/or?

As for the teflon tape - the threads are all NPT which is tapered. So I'm assuming by your note above that teflon is OK. Again, quite suprizing that teflon tape is OK in a high pressure environment. I'm very happy to hear that instead of "go out and buy Magic Permatex Gasketing Sealant Number X".


akio.kanemoto is offline   Reply With Quote
Old 11-08-2011, 08:24   #17
Senior Cruiser
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,725
Images: 122
Re: Watermaker High Pressure Hose Length ?

Refrigeration copper tube has a thicker wall. Places that do large refer installs would know where your supplier would be. You could do it in sections with connections at the bulkheads.

Flared connections adapted to pipe fitting would work and they can be purchased in SS or brass. McMaster-Carr

When I use to do the connections for the CNG compressors (5000 psi) I would use teflon tape (the SS type). The main thing is not to get any pieces in the line.

For the flared connections you would need a good aircraft tubing 37 flare tool, about US$120. Add up the numbers. It could be less then the AU$1300.

Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
High Oil Pressure - Only at Idle windsaloft Engines and Propulsion Systems 10 22-04-2011 07:10
Compressor Cuts Out: Differential Pressure Too High svpresent Plumbing Systems and Fixtures 8 14-11-2010 15:45
High Oil Pressure on 4-108 Perkins brakauskas Engines and Propulsion Systems 9 13-07-2010 06:24
Bilge Pump Hose Length kcmarcet Plumbing Systems and Fixtures 2 10-09-2009 08:02
Still have high oil pressure-ideas please? Mexico Mike Engines and Propulsion Systems 5 26-05-2008 15:57

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:45.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.