Cryogenic cylinder control system, globe valve, and solenoid valve

A valve for conveying fluid, comprising:

• a valve body comprising a valve seat and defining an inlet and an outlet in fluid communication with one another;
• a gland nut coupled to the valve body;
• a lower spindle threadably engaged to the valve body, wherein the lower spindle defines a first bore;
• a seat disc mounted to the lower spindle;
• an upper spindle defining a spring bore, wherein a portion of the upper spindle is received in the first bore of the lower spindle to matingly engage the upper spindle to the lower spindle such that rotation of the upper spindle causes rotation of the lower spindle;
• and
• a spring extending between the upper spindle and the lower spindle and at least partially disposed in the spring bore of the upper spindle, wherein the spring is configured to bias the upper spindle to sealingly engage the gland nut, wherein the valve is movable between a closed configuration in which the seat disc sealingly engages the valve seat and prevents fluid flow from the inlet to the outlet and an open configuration in which the seat disc is disengaged from the valve seat and enables fluid flow from the inlet to the outlet.

A valve for conveying fluid, comprising:

• a valve body;
• a valve seat;
• a gland nut coupled to the valve body;
• a lower spindle threadably engaged to the valve body, wherein the lower spindle comprises an upper spindle engaging surface that defines a first bore;
• a seat disc mounted to the lower spindle and configured to engage the valve seat in a closed configuration and be disengaged from the valve seat in an open configuration;
• an upper spindle comprising a lower spindle engaging portion defining a spring bore, wherein the lower spindle engaging portion is received in the first bore of the lower spindle to matingly engage the upper spindle to the lower spindle such that rotation of the upper spindle causes rotation of the lower spindle;
• and
• a spring extending between the upper spindle and the lower spindle and at least partially disposed in the spring bore of the upper spindle, wherein the spring is configured to bias the upper spindle to sealingly engage the gland nut.