DEVICE TO PROTECT PIPELINE AGAINST DAMAGE IN CASE OF WATER FREEZING Russian patent published in 2013 - IPC E03B7/10 

FIELD: construction.

SUBSTANCE: device comprises a pipeline with an actuating mechanism for water drainage with a valve and a screw with a sealing gasket. The valve covers the body seat. The body is made with a cover in the bottom part and drain holes in walls of the body and the cover. The upper part of the actuating mechanism body is made with a guide. On the guide there is a piston installed with sealing rings capable of vertical displacement. The lower surface of the guide is in the centre of the inner cavity of the piston. The piston is spring-loaded relative to the cover of the actuating mechanism body. The inner cavity of the piston is filled with heavy water. The piston bottom is a valve. The actuating mechanism body is fixed inside the protected pipeline.

EFFECT: increased reliability of device functioning.

1 dwg