After the copper Brass Ball Valve FNPT fails, it usually needs to be disassembled and repaired. The following Yuhuan valve manufacturer will explain to you the preparations before the ball valve repair.

When the ball valve is closed, there is still fluid under pressure inside the valve body, so before maintenance, you need to relieve the pipeline pressure and make the valve in the open position, then disconnect the power or air source, disconnect the actuator from the bracket, and then check the ball valve Whether the downstream pipeline has been relieved of pressure before it can be disassembled and disassembled for maintenance.

After the ball valve is cleaned, it must be installed and configured after the cleaning agent of the wall to be washed is completely dissipated, but it cannot be placed there for a long time, otherwise it will rust and be covered by dust. In fact, the new components of the ball valve must be cleaned before installation and configuration, and they must be lubricated with grease. The lubricating grease must be fused with the ball valve metal material, rubber parts, plastic parts and working media. When the working medium is gas, for example, special 221 grease can be used.

Coat a thin layer of grease on the contour of the seal installation groove. The tight sealing surface of the valve stem of the ball valve and the friction surface that are in contact with each other must be covered with grease.