Patent ID: 6095186
Filing Date: 2000-08-01
Classification: F16K,Y10T

Abstract:
A valve arrangement comprising:a valve housing which has a flowthrough passage extending between an inflow opening and an outflow opening; anda shutoff device for closing the flowthrough passage, said shutoff device having a valve seat surrounding the flowthrough passage and a valve cone which is movable in an axial direction perpendicular to the valve seat between an open valve position and a closed valve position and which corresponds with the valve seat such that, in the closed valve position, sealing surfaces on the valve cone and valve seat come into metallically sealing contact and thus close off the flowthrough passage,wherein there is arranged between the valve seat and the valve cone a soft-sealing seal arrangement which, in the closed valve position, provides an effective seal in addition to the metallic seal effected by the sealing surfaces;wherein the soft-sealing seal arrangement has a sealing element retained on the valve seat, said sealing element being positioned so that:during a closing operation the valve cone comes into contact against the sealing element before the closed valve position is reached, andas the closing operation proceeds, the sealing element presses against an elastic return force in the direction of the valve seat; andwherein the sealing element is configured as an annular disk which in the region of its outer rim is retained on the valve seat and in the region of its inner rim is supported elastically on the valve seat.