Could you tell me how to connect 2 pipes, one cast iron and the other stainless steel, DN150? The fluid concerned is hot water at 80°C, pressure at 6 bar. Problem is I wanted to use a PAM-type Ultralink coupling (quick). Unfortunately the supplier informs me it cannot be used with hot water. (Gaskets may not hold over time)
I can weld a flange onto the stainless steel 316 pipe, but what can I use on the iron pipe to connect it?
Hello, the solution is therefore welded flange on steel and flange adapters on cast iron. Most manufacturers offer gaskets adapted to different temperatures and different fluids. Specify the temperature: example ethylene propylene for water up to 90 degrees or polyacrylic for up to 130 degrees.
I have used silicon bronze to join dissimilar materials such as stainless to steel , iron to steel with great results when TIG applied . This application would be dependant on accessibility of course.