... Pre-heated pressure system 1.Pre-heated pressure system with copper coil in side 2.Pre-heated pressure system need pressure Pre-heated pressure system, ... water by a copper coil inside water tank.2.Pre-heated pressure system Working principle is more advanced than ... coatingInsulation55mm thickness polyurethane foamInstallation angle20,38,40,45Assistant tank capacity2L,5L,10L,20L,30L,60L,100L,150L etc