... liquid2) Temperature preservation is equipped with standard electric water heater setting,automatic temperature control exchanger, and increased anode ... inner tank5) Manifold : aluminum alloy out casing & red copper flow passage6) Glass tube: new trivalent element heat tube, ... 8mm,Insulating layer,compressed rock woolHeat Pipe pure red copper TU1+water,transfer power>=150W,Working pressure,4Mpa, ...