Gaps between a core of the valve and the plug. It is possible to use two ways of measurement. – To insert the valve into the plug. To raise the valve on 3 mm from a saddle and to shake here and there, to measure lateral movings of the valve. – To measure internal diameter of the plug and external diameter of a core of the valve. To take a difference of diameters. Openings of directing plugs can be developed for the bigger repair size, see fig. Expansion of openings of plugs. In this case it is necessary to use valves with the increased diameter of a core. |
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