What's a twin hot melt ball valve?
Is a plastic ball valve, connecting France is hot melt.
Is a plastic ball valve, connecting France is hot melt.
The ball valve is defined with the ppR/PE hot melt plastic pipe connected with the ball valve hot melt connection, ordinary ball valves generally use the threaded connection or flange connection. Double hot melt ball valve is both ends of the hot melt way to connect the ball valve
