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1. Before installation, carefully check whether the retractor processing is consistent with the actual pipe size. If the three arms of the retractor are in a horizontal plane, use a level ruler to view and adjust the support so that the retractor position, elevation, and slope meet the design requirements.
2. When installing, the stretcher should be pre-stretched, and the pre-stretching amount should be 1/2 of the heat-stretching amount. The tensile test method can use a pipe puller or use a jack to stretch the arms of the extender.
3, the pre-stretched weld, should be selected from the bending point of the expansion point of 2-2.5m as well, not too close to the retractor, before cold drawing should check whether the cold-welded gap clearance value.
4. When installing horizontally, it should be the same as the slope direction of the pipeline; when installing vertically, set the exhaust valve at the high point and the drain valve at the low point.
5. Bend the square retractor and bend the whole pipe. If the interface needs to be set up, the interface should be set in the center of the straight arm.
6. The first bracket on both sides of the compensator should be located 0.5-lm away from the bending starting point of the compensator elbow. The bracket should be a movable bracket.
The installation distance of the pipeline retractor is determined according to the size of the caliber, and is also calculated through rigorous calculations. The caliber below DN200 needs to be installed within 10 meters of the pipeline, while the DN300-600 can be installed at 20 meters. It needs to be determined according to the actual action of the construction site. From the construction point of view, as long as the column is connected with strength and height sealing requirements, there is no remaining request.
Gongyi integrity water supply equipment has been established so far, always adhere to: "science and technology as a precursor, depending on the quality of life, the user as God" business philosophy, adhere to the principle of excellence in product quality, professional R & D and production of various products and equipment. Our company adhering to the "innovation, excellence, unity, dedication," the spirit of enterprise, casting a batch after another batch of excellent quality, excellent performance of the famous products, new and old customers have won critical acclaim.
Several things to do before installation of pipeline retractors - site construction
Preparation work for pipe expansion joints before construction is divided into several steps. Pipe expansion joints are a kind of telescopic compensation connection pipe which is indispensable for pipeline operation. It is connected with the butterfly valve. According to our company's years of production and guidance installation experience Outgoing, six preparations need to be done before product installation.