Check valve for high-pressure fluid reservoir

A system for fluid comprising:

• a high-pressure fluid reservoir having an entrance;
• a plug assembly disposed in the entrance, wherein the plug assembly has a supply conduit with an opening at a first end and a plug end at a second end, wherein the plug assembly has at least one outlet hole between the opening and the plug end, wherein the at least one outlet hole extends from the supply conduit to an outside plug surface of the plug assembly;
• a check valve disposed within the supply conduit of the plug assembly;
• and
• a fluid source connected to the plug assembly, wherein the fluid source has a supply passageway.

A plug assembly for fluid comprising:

• an first section having a valve chamber;
• a check valve disposed in the valve chamber, wherein the check valve comprises a valve seat, a spring, and a poppet disposed on the spring, wherein the spring biases the poppet against the valve seat;
• a second section connected to the first section, wherein the second section has an opening on one end and the valve seat on another end;
• at least one fluid outlet hole formed in the first section and in fluid communication with the valve chamber.