Oil, Chemical, Liquid Flowmeter medium: petroleum, high water-content crude oil, low/middle/high viscocity petrochemical etc. The Positive Displacement Flow ... , 1.6, 2.5, 4.0, 6.3medium: petroleum, high water-content crude oil, low/middle/high viscocity petrochemical & chemical solvents.indicator function ... : IP65connect: flange GB-/T9113.1-2000 standard: JB/T9242-1999 Oil, Chemical, Liquid Flowmeter