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The installation of indoor drainage flexible cast iron pipe - - Operation process

by:XEX     2021-01-14
The installation of indoor drainage flexible cast iron pipe - - Operation process 1, riser installation: first of all, according to the requirements of the design coordinates, and messenger wire, will be reviewing the reserved hole are vertically, the hole size may not be too big, more do not damage reinforced, line in the picture on the wall position, stents, stent installing height of 1 from the ground. 8米( The same inside toilet water supply and drainage pipe supports should be unified level) 。 Cleaning up before installation, pitched operation platform, according to need. Will have preformed riser to the installation site. Review the riser bracket. Right after the box card tighten the riser. Then looking for is straight, and measure the roof is in line with the requirements from the center of three mouth. Riser inspection hole center height of 1 m from the ground level ground installation. Ventilation pipe installation should be 300 mm above roof, but must be greater than the maximum thickness of snow, the ventilation pipe exports less than 4 m with a door, window, vent should be higher than 600 mm or to slam shut the door, window top, on one side of the window. Riser closed water test, with inflatable rubber plug seal check upper mouth, closed water test, filled with water for 15 minutes after the water drop, then watch 5 minutes, liquid level does not drop, no leakage for qualified for pipeline and interface. After passing from rubber plug, check mouth sealed. Irrigation irrigation water should be paid attention to safety when discharge, outdoor and basement should not cause damage. 2, process flow, preparing to prefabrication, installation installed main and riser to card is fixed, the sealing plug hole to close water test, water test 3, prefabrication, and connecting with the actual situation, according to your drawings according to the size of obligate mouth position measurement, sketch drawing processing. According to the sketch measured pipe size, carries on the broken pipe. Fracture will flush with interior and exterior stab fly cutter or knife to remove the fracture. Then precast, prefabricated entrance notice. Flexible cast iron pipe flange installation, socket expansion amount of compensation shall be made in 5 ~ 10 mm. 4, main installation: first of all, according to the requirement of design drawing coordinates, elevation the reserved hole. Buried, according to the design coordinates, elevation, slope direction, slope excavation grooves and compaction. Using crane tube when installation should be according to the design coordinates, elevation, slope to do a good job, hanger. , construction conditions have been met to precast processed section, according to the number shipped to the installation site for installation. The flange connect pipe to pipe straight, slope to uniform, the reserved position accurately. Main installation slope gradient is designed according to the drawings, if no label drawing, can choose corresponding gradient value in accordance with the requirements for the following table: main closed water test should be done after installed, the water height shall be not less than the height first. Export with inflatable rubber closed, filled with water for 15 minutes after the water drop, then watch 5 minutes, liquid level does not drop, no leakage for qualified for pipeline and interface. After the closed water test should be timely to obligate mouth seal and plug hole. 5, water test: after fittings installed, open the toilet water distribution points, respectively, observe whether unobstructed, drain water appliance bearing water apparatus whether there is water overflow. 6, pass the ball test: riser: from the top riser in drainage riser pipe diameter should not less than two-thirds of the rigid plastic rubber ball, in a layer of inspection door plank stopped out. After the test block at the top of the stand pipe. Main: from the discharge pipe of cleaning mouth hard light into not less than two-thirds main drain pipe diameter plastic rubber ball, water will be rubber ball to outdoor, stop, if not out of small submersible pump circulating water pressure is taken out of. After the test should check whether glue ball number lack, counting the inventory.
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