| 主权项 |
1. A ball valve, comprising:
a valve body including a first body member and a second body member, the valve body defining a valve axis and a fluid flow path; a ball element having a port and a ball stem, the ball element rotatable about a ball stem axis between an open position providing fluid flow through the fluid flow path and a closed position inhibiting flow through the fluid flow path; a body seal located between the first body member and the second body member, and defining a thickness that decreases as the body seal extends away from the valve axis; and a stem seal defining a substantially frusto-conical shape and arranged in the valve body, the ball stem extending through the stem seal to form a seal between the ball stem and the stem seal and between the stem seal and the valve body, |
