1.valve type flowmeter 2.nice looking,light weight 3. ... is mainly made by acrylic glass,widely used for oxygen measuring,control oxygen flow.Featured with nice figure,light weight,unbreakable,long life ... PressureLZB-6M/MTO21~10Hose connection5.0≤0.1MPa0.5~140.1~1.50.2~20.3~30.5~51~10Company ProfileCHANGZHOU ... of LZB/LZJ(-F)glass tube flow meter,LZB-W(B)micro type glass tube flow meters,G.R.F10/20/30 ...