... , light weight, easy and convenient installation, beautiful appearance.Work condition:.Work pressure≤0.4MPa,work temperature≤49°C,maximum vacuum 127mmHg(5"Hg ... )Work mediator:water ,Acid, alkali and other chemicals corrosive liquids.Application: ... first year,if the products on serious defects,and can not work. Engineer remind you: when use diameter 750 above shell of ...