VALVE WITH ROTARY ELEMENTS

摘要

A fluid flow regulating valve having a central hollow split ball valve element rotatably controlled within an inner split ball valve housing, both being fabricated of elastomeric resilient materials such as nylon or Teflon and the like. The inner split housing is of frusto-conical form to lend itself to compressive self-sealing adjustment within a complementally shaped recess within the main outer valve housing or body. The ball element and housing are diametrically apertured to provide for selective fluid passage therethrough, with the inner housing apertures provided with peripheral resilient annular sealing seats to complementally sealingly engage with the spherical surface of the ball valve element responsive to manual adjustment as well as to fluid pressure. The construction is such that fluid pressure of the flow media being valved is able to partially deform the upstream portion of the ball element and its annular inner housing seat to admit fluid pressure into the interior of the hollow ball and to greatly assist in pressure sealing, not only the downstream side of the ball and valve seat, but also subsequently the upstream side upon equalization of the fluid pressure within the ball element.