The water pressure test of the corrugated compensator of the pump room water supply system before leaving the factory is very important

Before leaving the factory, perform a water pressure test on the corrugated compensator of the pump room water supply system. In general, DN300 small-diameter corrugated expansion joints require hydrostatic testing, and DN500 large-diameter corrugated expansion joints require penetration. So, why can't we ignore hydraulic tests? What are the advantages of hydrostatic testing?

The pipeline believes that the advantage of the water pressure test of the corrugated compensator of the pump room water supply system is to check whether there is water leakage in the corrugated pipe and the welding seam, so as to better check the air tightness of the corrugated compensator of the pump room water supply system.

The pressure test of the compensator system is allowed not to exceed 1.5 times the nominal pressure.

For the compensator and its connecting pipe used for gas medium, during the hydrostatic test, it should be considered whether it is necessary to add temporary support on the connecting pipe of the compensator when replenishing water.

The water used in the hydrostatic test must be clean and non-corrosive, and the chloride ion content in the water must not exceed 25ppm.

After the hydrostatic test, the water in the bellows should be drained and the inner surface of the bellows should be quickly dried.

During the operation of the pipeline with the compensator, the valve should be gradually opened and closed to avoid sudden changes in the temperature and pressure in the pipeline, causing damage to the bracket or the compensator.