... , it is used in lever gauge in boiler for water position. Level Gauge Glass It’s made from Borosilicate, ... water position.It is also named: Reflex Gauge Glass, Sight glass, Reflex GlassesReflex sight glass, Spares For level GaugeThe category is ... , Working pressure: 8.0 MPa The material:Borosilicate Glass Level Gauge Glass Physical PropertyTesting ItemStandard Rules1. Appearance1) Air bubble:Diameter≤ ...