IMPROVED VALVE FOR TESTING AND DRAINING SPRINKLER SYSTEMS

摘要

Improved valve for testing and draining sprinkler systems comprising a half body with an inlet channel and a half body with an outlet channel which define a housing chamber which houses the valve shutter and is in continuous fluid communication with the inlet channel. The ball shutter has a trough channel with end openings having a different diameter as well as a third opening of a joining channel the axis of which is at right angle to said through channel and said joining channel opens out into the latter. Within the outlet channel the shutter is supported by an annular gasket whereas at the inlet side the shutter is supported by a springing insert which has apertures and causes turbolences in the flowing flow.