Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
IPS header fitting leaks
I have a vexing problem on a pressurized glycol system in the Boston area. All of the 1" NPT fittings of my SunMax VHP tube collector headers are leaking - a slow weeping drip. None of the other threaded connections leak in the system, just those at the headers. I have attached either copper female adapters, brass 1" threaded couplings, or brass female unions screwed onto these header nipples - all three types leak in the same way. And even with the couplings it is only the header side not the other side of the fitting. I originally used just Loctite 580 on them, then took it all apart and used blue teflon and high-temp dope. Same leak. Any thoughts? SunMaxx just says dope and blue teflon. And avoid over-tightening. I have lots of systems and lots of IPS connections with no other problems. Is this a known SunMaxx issue?
Jamie
Jamie
0
Comments
-
loctite
Is it a gasketed connection, or just threaded?
dis-assemble, clean and dry the threads and use a loctite 272. This is a high temperature thread sealent. Not all Euro machined NPT threads seal well. They sometimes try to taper or modify a BSP, or machine a NPTF. Glycol is a tough fluid to seal, "gluing them together with loctite is a workable option. Give it 15 minutes or so to set before you re-fill and pressurize the system.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0
Categories
- All Categories
- 86.2K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 99 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 63 Pipe Deterioration
- 915 Plumbing
- 6K Radiant Heating
- 381 Solar
- 14.8K Strictly Steam
- 3.3K Thermostats and Controls
- 53 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements