1>Z-500 series plastic flow meter 2>alarm switch is optional 3>max press.0.6MPa,max temp.80C 4>+/-5% Polycarbonate,S.S. Z-500 series pipeline flow meter with alarm switchmaterial of taper tube is polycarbonate(PC),the connectors are polyvinyl chloride(PA66),the float material can optional S.S.304,316 or ABS.also have polysulfone body type.1>max working pressure:6bar(87psi) max temperature:158F( ...