Pe pipe testing machine value requirements specification requirements:
a. The test pressure of the cold water pipe shall be 1.5 times of the working pressure of the piping system design, but not less than 1.0Mpa, and the time shall not be less than 1 hour.
b. The test pressure of the hot water pipe shall be 2.0 times of the working pressure of the piping system design, but not less than 1.5Mpa, and the time shall not be less than 1 hour.
c. Pipeline hydrostatic test should meet the following requirements:
1. The pipe connected by hot (electric) fusion shall be hydrostatically tested after the interface has been completed for more than 24 hours. The total length of the pipe of a
pe pipe testing machine shall not exceed 500m;
2. Before the water pressure test, the pipeline shall be fixed firmly and reliably, and the joint shall be exposed. Except for the valve, the branch end shall not be connected with the water distribution parts of the sanitary appliance;
3. The pressure should be pressured by hand. The pressure gauge for pumping pressure should be installed at the lowest point of the bottom of the pipeline system (the pressure value should be converted to the geometric height difference when it is not at the lowest point), and the accuracy of the pressure gauge should be 0.01 Mpa;
4. After the pipeline is filled with water, the air in the pipeline is discharged first, and the exhaust outlets are sealed to check the water tightness;
5. Slowly boost, the boosting time should not be less than 10min, rise to the specified test pressure (in 2min, allow 2 times to apply pressure to the test pressure), stabilize the pressure for 1h, the test should be free of leakage, the test pressure drop should not exceed 0.06 Mpa;
6. Under the condition of 1.15 times of design working pressure, the pressure should not exceed 0.03Mpa for 2h, and no leakage is found at the same time. The water pressure test is qualified.
7. Pipes directly buried in the floor and wall,
pe pipe testing machine must be carried out before the surface layer is poured or plugged. After the pressure test requirements are met, the civil works can continue construction. The pressure test can be carried out on branch pipes or on separate floors, but must pass.
It should be noted that when the system strength is pressed, water equipment, such as water nozzles, float ball valves, etc., are not included. These joints with metal inserts during pressure test can be temporarily sealed with pressure-resistant plastic plugs. Also pay attention to the loading and unloading, do not use too much force, so as not to damage the threaded fittings, causing leakage at the joint. In the rigorous test, all water equipment such as water nozzles should be installed to check the reliability of the entire system.
