... 3.manufacturer of flowmeter Portable Hydrogen Gas Flow Meter 1.high quality hydrogen meter2,measure and control flow ... purging, etc. Models in stock: 0.5-8LPM,1-12LPM,2-20LPM ,3-30LPM,10-60LPM,etc.Specifications ... Fitting Float O-ring T- with O- No Brass Ss 1. ABS 2. PP 3. PVC 4. Brass 5. ... Brass chromeplate 6. Ss Ss Acrylic Agate ball PTFE 1-Silicon rubber 2-Fluorin rubber 3-Butyl Portable ...