Grout valve assembly for hydraulic down-the-hole hammer
The grout valve assembly with a moveable member and opening member addresses fluid leakage and high-pressure grouting issues, enabling efficient low-pressure grouting and seabed integrity by preventing fluid leakage during drilling.
AU2024405369A1Pending Publication Date: 2026-07-23MINCON INT
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Patent Information
- Authority / Receiving Office
- AU · AU
- Patent Type
- Applications
- Current Assignee / Owner
- MINCON INT
- Filing Date
- 2024-12-19
- Publication Date
- 2026-07-23
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Abstract
A grout valve assembly (100) comprising a body (101) having a central bore (102) therethrough, and a grout valve (103), comprising a moveable member (104) mounted in a valve chamber (114) in the central bore, the moveable member comprising a central fluid passage therethrough. The grout valve assembly also comprises at least one grout outlet (105) extending through the body from the central bore to an outer surface. The moveable member is biased in a rearward direction to a closed position in which the at least one grout outlet is obstructed by the moveable member. Fluid flowing through the central fluid passage acts on a forward pressure area (113) of the moveable member to urge it to the closed position. The assembly further comprises an opening member (115), insertable into the central bore to occlude the central fluid passage of the moveable member, thereby opening the valve.
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