1. before installation, the interior of pipe accessories and equipment shall be cleaned up without sundries.
2. Before formal installation, valves, condensate tanks and compensators shall be separately tested for strength and tightness according to the requirements of their product standards. Equipment and accessories that pass the test shall be marked and test records shall be filled in.
3 The pressure gauge used in the test must pass the calibration, and within the validity period, the measuring range should be 1.5 ~ 2.0 times of the test pressure, and the accuracy grade of the pressure gauge used in the valve test should not be lower than 1.6.
4 each installation should be completed at one time, and the operation of the purged pipeline should not be polluted again during installation.
5 after the installation of pipe accessories and equipment, the connecting parts shall be protected against corrosion in time.
6 valves, compensators, voltage regulators and other facilities are strictly forbidden to participate in pipeline cleaning.
7 after the installation of pipeline accessories and equipment is completed, the leak test shall be carried out together with the pipeline.
1.1 before installation, the interior of pipe accessories and equipment shall be cleaned up without sundries. 1.2 Before formal installation, valves, condensate tanks and compensators shall be separately tested for strength and tightness according to the requirements of their product standards. Equipment and accessories that pass the test shall be marked and test records shall be filled in. 1.3 The pressure gauge used in the test must pass the calibration, and within the validity period, the measuring range should be 1.5 ~ 2.0 times of the test pressure, and the accuracy grade of the pressure gauge used in the valve test should not be lower than 1.6. 1.4 each installation should be completed at one time, and the operation of the purged pipeline should not be polluted again during installation. 1.5 after the installation of pipe accessories and equipment, the connecting parts shall be protected against corrosion in time. 1.6 valves, compensators, voltage regulators and other facilities are strictly forbidden to participate in pipeline cleaning. 1.7 after the installation of pipeline accessories and equipment is completed, the leak test shall be carried out together with the pipeline.
