Side Exit Research Articles

Experimental Research on Disc Valve (6th Report)

In the valve box of angle valve type described in the 5th Report, the diameter of the side exit hole was changed to 30.4 mm and the inside height of the valve-chamber to 45 mm. Flat-seated valves of five kinds and conical-seated valves of two kinds, which varied in diameter, were in turn combined with valve-chambers of six kinds varying in inside diameter, and each of these combinations was tested with water under a head of about two meters. Center height of the side exit-hole, radius of the corner rounding of the exit hole and inside height of the chamber were also varied. Experimental results thus obtained were compared with those from the valve-chamber of vertical cylindrical type and those in the case of free discharge of water into the air. Finally we have described the results of wider considerations on the valve characteristics and the matters to be attended in valve designing.