Sewage valve installation method

Multi-pass drain valves must be installed vertically on horizontal pipes. The valve can only be installed after the pipe has been cleaned.

1. Turn the hand wheel valve stem counterclockwise to drive the valve core upward gradually, the sealing surface.......

Application of Density Meter and PH Meter in Measurement

1 The cause of slurry fouling It is well known that during the course of forming a gypsum after a series of reactions, limestone slurry will have a lot of soft dirt or hard dirt if the PH value of the slurry changes violently or the oxidation degree decreases;.......

DC protection testing instrument to fill the gap

A few days ago, China Southern Power Grid Co., Ltd. passed the acceptance test for the development of a DC protection test instrument. Experts at the meeting believed that the results of the project were innovative and filled the gaps in the country. They have.......

China Lighting Network: 2014 grows with you

—— cum “exciting, only because you and me” theme annual meeting January 26, 2014, all the staff of China Lighting Network gathered together, held the "2014, wonderful only because you and me" theme conference in the Imperial Court. The annual meeting was full.......