Railway damper valve assembly, and railway damper comprising such a railway damper valve assembly

Abstract

The present invention relates to a railway damper valve assembly (10, 10′, 10″) comprising—a valve body (11) with a primary chamber (12) for connecting to a hydraulic flow passage (13);—a sleeve (20) slidably arranged on an outer circumference of the valve body (11) and delimiting the primary chamber (12);—a spring (15) configured to bias the sleeve (20) towards a meeting surface (16) on a stop (17) to reach a closed position, said closed position being a position where the primary chamber (12) is outwardly sealed for preventing a flow of hydraulic fluid from the primary chamber (12) out of the valve assembly (10, 10′, 10″) between the meeting surface (16) and the sleeve (20); wherein the valve assembly (10, 10′, 10″) is pressure-balanced by the spring (15) such that a predetermined opening pressure of hydraulic fluid in the primary chamber (12) causes the sleeve (20) to move away from the meeting surface (16), thereby enabling a flow of hydraulic fluid from the primary chamber (12) in a radial direction (R) out of the valve assembly (10, 10′, 10″). The invention also relates to a railway damper (100) comprising such a railway damper valve assembly (10, 10′, 10″).

Dependencies are inferred from the claim text.