Drain pipe sound insulation tape
It is suitable for an extremely wide temperature range and is easy to cut and install. 
It is suitable for noise reduction and shock absorption in various drainage pipes,
wastewater pipes and air conditioning pipes.
Instructions for use: 
You can use strips of "Energy Saver Drainage Pipe Soundproofing Tape", 
cut to a suitable size, wrap it in a ring along the pipe wall, and then fix it with tape. 
Wrapping the water pipe completely and reliably can reduce the noise caused by water flowing in the pipe.