Its made from Borosilicate, it is used in lever gauge in boiler for water position. It is also named water Gauge Glass, level gauge glass, boiler sight glass, liquid indicator glass, borosilicate sight glass, spars for level gauge. The series include: 1) Reflex glass 2) Transparent glass 3) Round sight glass 1) Reflex gauge glass Size: A4, A5, A6, A7, A8, A9, A10, A11 B4, B5, B6, B7, B8, B9, B10, B11 The other size is optional or according to the requirements of customers. Working temperature: 260 degree C, Working pressure: 4.0MPa 2) Plain gauge glass Size: A4, A5, A6, A7, A8, A9, A10, A11 B4, B5, B6, B7, B8, B9, B10, B11 The other size is optional or according to the requirements of customers. Working temperature: 260 degree C, Working pressure: 6.3 MPa 3) Round gauge glass Thickness: 10mm-25mm Diameter: 50mm - 250mm Pressure: 6 - 25 bar Temperature: 250 degree C Packing: Each piece in a box, then in cartons.
