A plastic ball valve having improved ball sealing means. In a ball valve comprising a valve body, conduit portions extending from said valve body, said valve body having a chamber therein, said condui

Fluid control apparatus comprising: a valve body having first and second ends with first and second openings respectively, extending completely therethrough generally along a first axis, said valve bo

It is an object of the present invention to provide a ball valve, having a one-piece body and a valve member of composite construction, which is free from the above noted disadvantage and in which the

Floating ball valves include a spherical ball valve member mounted within a valve chamber of the valve body for limited floating movement between upstream and downstream seats on opposed sides of the

Ball valves and is especially advantageous in ball valves in which the valve ball "floats" in the sense that it is subject to displacement by the force of differential fluid pressure on the ball. The

Ball valves are already known in the prior art. The known ball valves comprise of valve body, a stem, a ball, seats, a pair of seat carriers, connecting sleeves and union nuts. The valve body has a cy

According to one aspect of the present invention, in an upstream fluid passageway of a valve housing there is fitted a valve seat retainer movable forwardly and backwardly within a given distance alon

The present invention makes it possible to fix the ball carrier to the valve body without hindering insertion of the ball, by providing projections on the inner wall surface of the valve body. In part