| 摘要 |
<p>A pair of seals (58) is structured to prevent fluid flow when a rotatable valve element is in first position. Each seal defines a seal contact area with respect to the valve element. The rotatable valve element defines a radial distance that is perpendicular to an axial distance. DEPENDENT CLAIMS are also included for the following: (a) Rotatable element for ball valve assembly; and (b) Assembling method of ball valve.</p> |
