It is a kind of reciprocating air compressor.It is a machine that uses the reciprocating motion of the piston or diaphragm in the cylinder block to change the volume of the chamber and extract and squeeze air.
PPR hot water supply pipe,is Ppr Plastic Water Tube,used to transport hot water in house water system .Plumbing ppr pipe to transport heat water and shower water. PPR hot water supply pipe can bear 95℃ water,its the best choice to transport hot water.