Choosing PP-R BF fittings with fixed flanges or metal inserts mainly solves the following pain points:

Reliable transition between metal and plastic: By embedding brass inserts or flange pressure plates, mechanical locking of PP-R pipelines and metal thread/flange interfaces can be achieved, avoiding the risk of leakage caused by direct hot melting of dissimilar materials.

Anti zinc corrosion: The metal inserts of high-quality products are made of zinc resistant brass, which is less prone to zinc loss and brittle water leakage in long-term water contact environments.

Easy to disassemble and maintain: Flange connections are detachable connections that facilitate subsequent equipment replacement or pipeline modifications, which is superior to pure hot melt connections.