Rust in old radiators.

Pete_11

I am building my house & using a hot water system with old cast iron radiators. While water testing for leaks, I have noticed some of the radiators are very rusty inside. I have blown them out with air, & flushed them out with water - a lot has come out. I am worried though that some large chunks will become dislodged while the heating system is in operation and damage a circulator. What should I do? Is there a filter system I can install?

Glenn Harrison_2

Here's two company's that make products.

First is Spirotherm, maker of the infamous spirovent, also make a dirt separator calle the Spirotrap,

http://www.spirotherm.com/dirt/

Another company is Garber Filters, known for their spin on fuel oil filters. They have a replacement boiler filter. Unfortunatly, they don't have info on their website, butI have seen magazine ads for it. E-mail them for more info.

http://www.garberfilters.com/

Please note I have not used either of these products, I'm just aware they are out there.

bob young

new concept

install wye strainers before pump if circulator is pulling. if pumping away ,not necessary , garbage will end up in boiler.