High pressure pouring machine accessories - high-pressure sealing the needle: the

use of the principles and ring fastening. Head of a one-way valve to prevent slurry

under high pressure push down spray. Central part of expanded rubber casing

pressure, diameter 13MM, 14MM stuffed aperture of the grouting hole, tighten the

pressure bolt ring, compressed rubber casing, so that grouting mouth fixed in the

grouting holes. (Grouting nozzle check valve to 0. 4KN more pressure to open, so

grouting pressure must be higher than this value.