| 摘要 |
A check valve construction is provided having: a movable disc with a flat surface on a first side and a convex shaped surface on the opposing side, a first seat on for the flat surface and a second seat for the convex surface, where the narrowest portion of the fluid path is defined by the equation: G 3 = 12 μ W Qπ D Δ P Wherein G: the gap of most narrow passageway between the flat surface of the disc and disc seat;μ: dynamic viscosity of the fluid; D: mean diameter of the flat sealing surface of the disc; Q: desired fluid flow rate; W: breadth of the flat sealing surface of the disc;ΔP: pressure differential across the gap (G). |
