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PCE
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CPC Subgroup
E02B 9/06

Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates (driving inclined galleries E21D9/02; valves in general F16K; conduits in general F16L)

Full Title

Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same > Water-ways > Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates (driving inclined galleries E21D9/02; valves in general F16K; conduits in general F16L)