Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 23-12-2015, 17:56   #1
Registered User
azuredragon's Avatar

Join Date: Mar 2015
Posts: 1
CAV fuel filter ports

My CAV fuel filter ports take 1/2 inch UNF fittings and the only fittings I can find are straight hose tail fittings. The particular installation I am planning wants elbow fittings at the filter and this requirement has become problematic. Most of the available fittings I've been able to locate are BSP sizes. A 1/4 male BSP thread is close to fitting a 1/2 inch UNF, but not perfect. (19 tpi BSP versus 20 tpi UNF and 13.16mm vs 12.70mm O.D.) Has anyone any experience in either forcing a 1/4 BSP thread into a 1/2 UNF or, alternatively, re-tapping a female 1/2 UNF with a 1/4 BSP tap?

I suspect the first option might work as the housing is aluminium and using a thread sealant should make the joint leak proof. But I'm nervous about experimenting before I hear about someone else's success.
azuredragon is offline   Reply With Quote
Old 23-12-2015, 18:53   #2
Registered User

Join Date: Feb 2013
Location: Lago de Izabal, Guatemala
Boat: Seafarer36c
Posts: 4,386
Re: CAV fuel filter ports

Modern thread sealant works but not Teflon tape. Once you position the fittings you can't move them later or you will break the seal.
Ecos is offline   Reply With Quote

fuel, fuel filter, ports

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
CAV fuel filter / glass bowl type MB23 Engines and Propulsion Systems 2 02-08-2015 05:00
For Sale: CAV fuel filter bases meridian28 Classifieds Archive 2 17-04-2013 16:37
CAV Fuel filter Port thread Size phil23 Engines and Propulsion Systems 1 28-02-2013 21:54
Changing a CAV-Type Filter without Spilling a Drop billwa Engines and Propulsion Systems 2 23-08-2010 06:19
CAV fuel filter seafox Engines and Propulsion Systems 8 21-10-2006 01:39

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:50.

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.