Valve for use in high-performance liquid chromatography having a spherical seat with beveled outer faces

摘要

A valve for use in high-performance liquid chromatography has a spherical seat and a ball that, when it abuts against the seat, constrains a fluid from flowing through the valve and is capable of moving axially in order to allow the fluid to flow through the valve. The spherical seat has beveled outer faces in order that a force acting on the valve along the axial direction will generate a force acting on the ball. The inclination of the beveled outer face is such that a force acting on the ball counteracts a force exerted on the spherical seat by the ball and essentially compensates it.

主权项

1. A valve for use in high-performance chromatography, comprising;
a spherical seating structure having a sealing surface, and a ball configured for constraining, when it abuts against the sealing surface of the spherical seating structure, a fluid from flowing through the valve and for moving in an axial direction in order to allow the fluid to flow through the valve, wherein the spherical seating structure has a beveled outer face separate and apart from the sealing surface, the beveled outer face being inclined with respect to the axial direction, cooperating with a housing structure and being configured such that a force acting on the valve along the axial direction generates a force acting on the ball, and wherein the inclination of the beveled outer face is configured such that the force acting on the ball counteracts a force exerted by the ball on the spherical seating structure and essentially compensates it.