Periodic maintenance of limit expansion joints

The limit expansion joint can reduce the blind pushing force in the pipeline operation and has certain maintenance for the pipeline, especially it gives a great degree of convenience for the installation and maintenance of the pipeline. When installing the limit expansion joint, the fillet of the foot bolt should be extended to both sides of the connection head, and the foot bolt of each flange bore is constantly and evenly torqued according to the top angle stamping to avoid pressure deviation. The threaded joint head should be torqued evenly with a standard wrench, and the airbag damping rod should not be used to add force to make the tee joint slip, slide prongs and rupture, and should be maintained regularly to prevent loosening from leading to dislodgement or leakage.
 
The equipment is erected at the root of the original characteristics of the limit expansion joint, and locked with double nuts at the larger expansion type volume. The pipeline can be expanded and contracted at will in the allowed amount, and once it exceeds its larger expansion amount, it has the ability to ensure the reliable operation of the pipeline, especially for the connection in the pipeline with vibration or sharp turns with certain inclination. Prevent the natural environment of high temperature, ozone oil and strong acid and alkali. The pipeline used in outdoor or sunrise facing the rain should build a shade frame, prohibit exposure to the sun, rain, wind turbidity. The connection head surface layer is prohibited to paint and coil insulation material.
 
Limit expansion joint all normal applicable substances is temperature 0-60°C general water, unique substances such as: oil, strong acid strong alkali, high temperature and other corrosion and texture solid situation, should take the relative nature of the corresponding special resistant raw materials, can not blindly follow the wind string or generality. High-rise residential water supply and drainage or hanging in the air water supply and drainage, the pipe should be stabilized on the bracket, fixed bracket or anchor frame, cut not to let the connection head bear the total weight of the pipe itself and axial force, or the connection head should be configured to prevent pull-off equipment (its bearing capacity must exceed the axial force of the pipe).