assembly, the degree of screw down the bolt and the order has a direct impact on the quality of the assembly. For general tighten bolts of better do, fittings is not loose, it can be. But the bolt tightening of gasket, packing structure, is due to have a uniform, symmetry, after take turns to tighten. When every bolts are tight strength, should check whether the flange is skewed, measure the clearance between the flange are consistent, in order to correct. Then symmetrical took turns to tighten bolts, tighten the volume is smaller, for a quarter - at a time About 1/2 circle, prestressing force of screw until needed. Pay special attention not to twist too tight, so as not to crush gaskets, generally not to twist to the shall prevail. Final inspection of the flange clearance, its clearance should be consistent and keep in more than 2 mm. In this paper, the keyword search: more Industrial Valves product supply information
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