Slide valve plate and method of making the same

摘要

The slide valve plate comprises the plate main body 11 and the sleeve 13 having the jaw part fitted in the through hole 12 formed in the plate 12, and the plate 11 and the sleeve 13 are integrally joined with the mortar, while the releasing member 15 is interposed between the part corresponding to the jaw part of the sleeve and/or the vicinity of the edge part of the through hole and the jaw part of the sleeve and/or the vicinity of the jaw part.