... in petroleum, petrochemical, natural gas, chemical, paper making industry, used to measure the small diameter of the micro-flow measurement. (1 ... stainless steel, PPS, bronze, etc.;Bearing Materials There are many to choose from: ceramics, bronze, Hastelloy alloys, carbides, PPS, stainless steel ... , Teflon for choice;turndown ratio of 10:1 up to 50:1;an accuracy of ± 1% and ± 0.5% of two, repeatability ...