Pressure retaining sleeve

摘要

A magnetic core (106) is adapted for a solenoid valve (100). The magnetic core (106) includes a base (113), a stem (112), and an inner cavity (115). The inner cavity (115) is formed in a portion of the base (113) and in a portion of the stem (112). The inner cavity (115) defines a thin wall (108) of the stem (112). The magnetic core (106) further comprises a non-magnetic pressure retaining sleeve (420). The non-magnetic pressure retaining sleeve (420) is arranged in such a way that either the non-magnetic pressure retaining sleeve surrounds at least a portion of the thin wall of the stem or that at least a portion of the thin wall portion surrounds the non-magnetic pressure retaining sleeve.

主权项

1. A solenoid valve, comprising: a magnetic core having a base portion and a stem portion; wherein the base portion has a greater width than the stem portion; a coil assembly; a coil housing that houses the coil assembly; an inner cavity formed in a portion of the base and in a portion of the stem, wherein the inner cavity defines a thin wall of the stem; and a non-magnetic pressure retaining sleeve located within the coil housing and surrounding at least a portion of the thin wall of the stem, wherein said non-magnetic pressure retaining sleeve includes an inner circumference and an outer circumference, said inner circumference of said non-magnetic pressure retaining sleeve is adapted to accept the stem and surround the thin wall, the outer circumference of said non-magnetic pressure retaining sleeve is sized to abut an inner circumference of said coil housing, said non-magnetic pressure retaining sleeve includes a bottom surface that abuts said base, and said non-magnetic pressure retaining sleeve includes a top surface that abuts a bottom surface of the coil assembly.