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The shedding stroke of a water jet loom varies with the beating-up stroke, and differs between single-nozzle and double-nozzle looms, as well as plain shedding and dobby shedding systems.

The injection angle of the main nozzle shall be set based on the shed clarity of the left-side warp yarns.

When the heald frame height is excessively high, beating-up will occur at the upper section or even the top edge of the reed air guide part

A large shed opening height generates high tension on warp yarns at the heddle area, which easily causes warp breakage.