Metal tube water/air rotameter, variable area flow meter 1. ... 5,4.0,6.4MPa 3.Tem:-80~+300C Metal tube water/gas rotameter, variable area flow meter IntroductionLZ steel ... PTFE. Other special materials are available for order, in order to measure corrosive fluid, i.e. Chlorine, Salt, Hydrochloric Acid, Nitric ... 1.6, 2.5, 4.0, 6.4MPa, according to GB/T17241.6-68(Other special order available, please quote ...