pinhole steamer in cast iron boiler


Old 09-20-12, 11:14 PM
Thread Starter
Join Date: Oct 2004
Location: wisconsin
Posts: 135
Received 0 Votes on 0 Posts
pinhole steamer in cast iron boiler

my 13 y/o cast iron oil boiler developed a pinhole leak, obviously on the bottom where i cannot reach it. i suppose i need a new boiler [you'd think they would last longer than 13 years]. on the other hand, there is no leaking when the boiler is cold; there is only some moisture and rising "steam" when the unit is on. i know for car radiators there are additives for this sort of thing. is there anything i can try for this unit??? the heating system is all composed of european flat panel radiators or 3/4" copper baseboards.
Sponsored Links
Old 09-21-12, 06:18 AM
Join Date: Apr 2011
Location: USA
Posts: 107
Received 0 Votes on 0 Posts
on steam ship boilers, we used to increase the phosphates dosage for chemical treatment, in turn it would reach the leak, come in contact with the air and coagulate the weeper. maybe there is an maintenance additive available for making such a repair?
Old 09-21-12, 07:43 PM
rbeck's Avatar
Join Date: Jul 2007
Location: Pennsylvania
Posts: 2,450
Received 2 Votes on 2 Posts
I'm confused is this a steam or hot water boiler? At first I thought it was a steam boiler.
I do not like the use of stop leaks in water boilers as it coats everything and decreases heat transfer in the boiler and radiation.
In steam boilers it affects the steaming rate.
Old 09-22-12, 06:39 AM
Join Date: Apr 2011
Location: USA
Posts: 107
Received 0 Votes on 0 Posts
good point about the film forming and reduced heat transfer effects.
larger boilers have greater circulation and the ability to bottom blow - sometimes it really is comparing apples to oranges.

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

Thread Tools
Search this Thread
Display Modes
Ask a Question
Question Title:
Your question will be posted in: