Matters needing attention in pressure test of ductile iron pipe

The pressure test of the ductile iron pipe is to ensure that the quality of use of the ductile cast iron pipe can be guaranteed after it is installed to prevent water leakage. At the same time, when doing suppression experiments, there are also some points that need to be paid attention to. If it is not handled well, it will affect the effect of suppression. The following ductile cast iron pipe manufacturers tell you what should be paid attention to in the process of punching?

Ball ink tube suppression experiment

Note 1: When carrying out the suppression experiment, the division of labor should be clear, unified command, and a special person should be responsible for checking the back, buttress, interface, exhaust valve, etc., and clearly specify the contact signal when a problem is found.

Note 2: After the ductile pipe connection is completed, the back, gate, tee and other pipe fittings should be reinforced. Enter water from low point and exhaust gas from high point. After being filled with water and soaking for 24 hours, when the pressure drop is not more than 0.05Mpa for 10min under the test pressure, it is qualified.

Note 3: The water pressure experiment should be gradually boosted, and each boost is preferably 0.2Mpa. After each boost, the boost is continued when there is no problem in the voltage stabilization check. During the water pressure test, no one should stand near the back, support, pipe end, etc., and the inspection should be carried out when the pressure rise is stopped.

Note 4: The weather in winter is relatively cold, so you should take anti-freezing measures, appropriately heighten the backfill of the ductile pipe, and wrap the exposed interface with multi-layer grass curtains; wrap the temporary pipeline for water stringing and pressure test to keep it warm. Empty in time when not using water.

In summary, the suppression experiment is not very simple. It is necessary to invite professional suppression personnel to conduct the test to ensure the test result. If a bad situation occurs during the test, we can solve it in time. I hope that the information brought by the ductile iron pipe manufacturers will be helpful to you! 
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