Axeon Water, water flow Meters are durable and high quality acrylic body Meters with polypropylene connections and 316SS guide and float. All flow Meters have an easy to read scale which has been silk-screened onto the one piece injected molded body. Models with integrated 316 SS needle Valves also available. Technical Specifications Solid one piece injection molded acrylic body Stainless steel float and internals Calibrations in GPM and LPM Individually packaged100% O-Rings Polypropylene connections Maximum pressure 150 PSI Temperature rating 120F Accuracy 5%