Amashanyarazi meza ni ibikoresho bikoresha amazi yo gutera inshinge cyangwa amazi meza kugirango bitange umwuka mwiza. Igice kinini ni urwego rwoza amazi. Ikigega gishyushya amazi ya deionion ukoresheje amavuta ava muri boiler kugirango habeho amavuta meza. Preheater hamwe na moteri ya tank bifata umuyoboro wicyuma udafite ingese. Mubyongeyeho, ibyuka-byera cyane hamwe ninyuma zinyuranye hamwe nigipimo cyurugero rushobora kuboneka muguhindura valve isohoka. Imashanyarazi ikoreshwa muburyo bwo kuboneza urubyaro kandi irashobora gukumira neza umwanda wa kabiri ukomoka ku cyuma kiremereye, isoko y’ubushyuhe n’ibindi birundo byanduye.