Series RMV II Rate-Master® flowmeters employ a target-type design combined with a damage resistant magnetic linkage to drive a pointer over an easy-to-read litho scale. This unique construction fully isolates flowing media from gage front for leak-proof operation at pressures to 3000 psig (206.7 bar) with ±5% of full scale accuracy. Solid machined brass meter body is ideally suited for water flows. Body design fits standard 4-1/2" mounting hole layouts per ANSI B40.1. Inlet and outlet threads are standard 3/4" female NPT.