Glass water-indicating corrugated Klingera (State standard specification 1663-81) for indexes of level of liquid are made of thermally tempered borosilicate glass and are applied in boilers and in the vessels containing petrochemical products. One party of this glass (viewing) is ground and polished; other party adjacent to working liquid has prismatic risks with a solid angle in 90 °; liquid to seem through it dark, and steam - light area; corrugated glasses are applied in boilers to 3,5 MPas (35 atm.).
Specialists of LLC Evronorma can in the choice of the necessary equipment. A wide choice of backpressure valves in a warehouse of LLC Evronorma