Metering Valves use a tapered plug-stem to give a fine adjustment to the flow in addition to a fully open or fully closed shutoff position. The PTFE all-wetted surface design works equally well with ultra-clean DI water and harsh chemical media. As with all Metering Valves, we recommend filtering the media prior to entering the valve. Our Metering Valves come in two configurations: Straight Flow Pattern and Angled Flow Pattern.