High pressure water valve

Details High pressure water valve High pressure water valve

1985-07-02

1987-04-28

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Cleansing fluid passage

251209, 299 17, F21C 2560

Patent

active

046608915

ABSTRACT:
A high pressure water valve (18) supplies water under very high pressure to nozzles (14) for cutting rock or concrete by water jets emitted from the nozzles. A valve plug (30,48) rotates in bearing rings (27) and cooperates with a valve bushing (22;45) of wear resistant high strength material to control the water supply to the nozzles via one or more valve openings (28;51) in said bushing or plug. High pressure water in a pressure opening (33;47) in respectively the plug or bushing forces the plug to sealingly occlude one or more valve openings (28;51) disposed diametrically opposite to said pressure opening.

REFERENCES:
patent: 4212497 (1980-07-01), Borowski et al.
patent: 4470636 (1984-09-01), Paurat et al.
patent: 4471998 (1984-09-01), Hotger
patent: 4565410 (1986-01-01), Hotger

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