REFLEX GLASS LIQUID LEVEL INDICATOR Enquiry Now Liquid level indicators are equipped with boron silicate glass, hardened by an accurately controlled heat treatment process. These level indicators are used to display the level of ammonia gas in the system. The liquid level indicators are installed with stop valves equipped with handwheels The liquid chamber is a one piece metal body covered by glass. The light striking the glass in the liquid portion is absorbed by the liquid whereas the light striking the glass in the vapour portion is reflected, making the liquid appear black. Sizes: 12", 18", 24", 30" 36", 42" 48", 54", 60". Gives safe and positive visual indication of liquid level in vessel under high pressure and temperature conditions. Suitable for R717 (Ammonia), HCFC & HFC. In case of glass break, the balls inside the valve stop the refrigeration flow immediately. Tempered boron silicate glass resistant to chemical, thermal and mechanical shocks. Safe working pressure: 400 psig (27 bar). Large chambers for boiling, flashing and surging liquids.