Propellant valve

A space vehicle comprising:

• a fluid reservoir;
• and
• a propellant valve configured to control a release of fluid from the fluid reservoir, the propellant valve comprising:
• a ferromagnetic shell comprising:
• a side section;
• an upper section that is perpendicular and continuous to the side section;
• and
• a lower section that is perpendicular and continuous to the side section, wherein the side section, the upper section, and the lower section define an opening of the ferromagnetic shell;
• a pair of coils within the opening of the ferromagnetic shell;
• a bobbin extending from the upper section of the ferromagnetic shell to the lower section of the ferromagnetic shell, wherein the bobbin seals the opening of the ferromagnetic shell;
• an upper ferromagnetic pole coupled an upper portion of the bobbin and to the upper section of the ferromagnetic shell;
• a lower ferromagnetic pole coupled to a lower portion of the bobbin and to the lower section of the ferromagnetic shell;
• a ferromagnetic filter retainer coupled to the upper ferromagnetic pole;
• and
• a magnet configured to move between a top portion of the lower ferromagnetic pole and a bottom portion of the ferromagnetic filter retainer based on a magnetic field generated by the pair of coils.

A method comprising:

• applying a first current to a pair of coils within an opening of a ferromagnetic shell to open a propellant valve, wherein the propellant valve comprises:
• the ferromagnetic shell comprising:
• a side section;
• an upper section that is perpendicular and continuous to the side section;
• and
• a lower section that is perpendicular and continuous to the side section, wherein the side section, the upper section, and the lower section define an opening of the ferromagnetic shell;
• a bobbin extending from the upper section of the ferromagnetic shell to the lower section of the ferromagnetic shell, wherein the bobbin seals the opening of the ferromagnetic shell;
• an upper ferromagnetic pole coupled an upper portion of the bobbin and to the upper section of the ferromagnetic shell;
• a lower ferromagnetic pole coupled to a lower portion of the bobbin and to the lower section of the ferromagnetic shell;
• a ferromagnetic filter retainer coupled to the upper ferromagnetic pole;
• and
• a magnet configured to move between a top portion of the lower ferromagnetic pole and a bottom portion of the ferromagnetic filter retainer based on a magnetic field generated by the pair of coils;
• and
• applying a second current to the pair of coils to close the propellant valve.