Flanged Ball Valves

ball valves
A one-way valve that is opened and closed by pressure on a ball that fits into a cup-shaped opening
(Ball Valve) A simple non-return valve consisting of a ball resting on a cylindrical seat within a liquid passageway.
(Ball valve) A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it. The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur.
(ball valve) any valve that checks flow by the seating of a ball

flanged
A flange is an external or internal rib, or rim (lip), for strength, as the flange of an iron beam or I-beam (or a T-beam); or for a guide, as the flange of a train wheel; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc.
(Flangs) The part of a window that surrounds the frame; for mounting in place and installation.
A hollow forging with one or more protruding ?ribs? or flanges on the outside diameter.