Reflex Sight Glass Reflex level gauge glass is made from High Borosilicate, They are used in level gauge in boiler for water position. Reflex type one side facing the medium chamber is provided with molded grooves set at 90 degree angles. The molding process increases the resistance of the glass grooves to wear; the skin which the glass attains during molding gives it maximum smoothness and hardness. This makes it extremely resistant to the attack of boiler water Specifications * Material: borosilicate glass, aluminosilicate glass. * Max pressure: 4Mpa. * Max temperature: 430 �°C. * Grooves: one, two, three or four grooves. * Using life: more than 20 years. * Standard: The products is strictly according to the standard of DIN7081. * Accessories: Gaskets and mica sheet can also be provided together.