Two-piece valve and gas cylinder

A gas cylinder, comprising:

• a body having a first end, a second end, and an axial bore providing a passageway for flow of fluid;
• a chamber for containing fluid, the chamber being attached to the second end of the body;
• a collar being mounted and rotationally fixed on the first end of the body;
• and
• a core being inserted into the body;
• whereby the collar is maintained between the body and the core when the core is inserted into the body.

A valve for filling or discharging a gas cylinder comprising:

• a body having a first end, a second end, and an axial bore for providing a passageway for flow of fluid;
• a spring disposed within the axial bore of the body supported by the second end of the body;
• a pin disposed within the axial bore of the body, the pin being biased against the spring for movement between a sealed position, arresting flow of fluid through the axial bore, and an open position, allowing flow of fluid through the axial bore of the body;
• a collar having an outer surface for engaging an external member for accepting or discharging fluid, the collar removably mounted and rotationally fixed on the first end of the body;
• and
• a core having an axial bore for receiving the pin and providing a passageway for flow of the fluid, the core being removably received by the body;
• wherein the core has a head for retaining the collar on the body when the core is received by the body.

A method for making a valve for a gas cylinder, comprising:

• mounting a collar on a body in a rotationally fixed position, the body having an axial bore providing a passageway for flow of fluid;
• and
• attaching a core to the body;
• whereby the collar is maintained between the body and the core when the core is attached to the body.

A method for making a gas cylinder, comprising:

• attaching a syphon to a body having an axial bore defining an axis, the syphon having a distal end that terminates away from the axis;
• attaching the body to a chamber, the syphon being inside the chamber;
• mounting a collar on the body in a rotationally fixed position, the body having an axial bore providing a passageway for flow of fluid;
• and
• attaching a core to the body;
• whereby the collar is maintained between the body and the core when the core is attached to the body.

A method for making a gas cylinder, comprising:

• attaching a syphon to a body having an axial bore defining an axis, the syphon having a distal end that bends away from the axis;
• attaching the body to a chamber, the syphon being inside the chamber;
• upon attaching the body to the chamber, providing a chamber mark on the chamber to indicate the direction in which the distal end of the syphon is pointed;
• fitting the collar securely to an ASA on a paintgun;
• providing a collar mark on the collar to indicate the upward orientation of the paintgun when the paintgun is in a firing position;
• detaching the collar from the paintgun;
• mounting the collar on the body in a rotationally fixed position so that the collar mark is aligned with the chamber mark;
• and
• attaching a core to the body;
• whereby the collar is maintained between the body and the core when the core is attached to the body and the distal end of the syphon is oriented upward when the chamber is attached to the ASA.