System and method for refilling propane tank

A method of using a tank refilling system, wherein the system comprises a valve assembly and an overpressure valve operably disposed in a wall of a refillable tank, wherein the valve assembly comprises a fill valve, and a connection assembly comprising a first length of tubing, a first connector affixed at a first end of the tubing, a second connector affixed at a second end of the tubing, and a manually operated valve, the first connector operably, fluidly connects to the valve assembly of the refillable tank and the second connector operably, fluidly connects to a source tank, and the manually operated valve operably, fluidly connecting the first connector with the second connector, wherein the valve assembly further comprises an overfill valve assembly comprising an overfill valve and a hand operated actuator that operably opens a fluid path between an inside of the refillable tank and outside the refillable tank to a surrounding environment, and wherein the first connector comprises a second prong, the second prong sized and shaped to engage with and actuate the fill valve when the first connector is operably affixed to the valve assembly, the method comprising:

• operably connecting the second connector to the source tank;
• operably connecting the first connector to the refillable tank;
• opening the fluid path using the hand operated actuator;
• operably activating the manually operated valve, resulting in fluid flowing from the source tank to the refillable tank;
• and
• closing the fluid path using the hand operated actuator when fluid is indicated at an output of the overfill valve assembly.

A tank refilling system, comprising:

• a valve assembly and an overpressure valve operably disposed in a wall of a refillable tank, wherein the valve assembly further comprises a fill valve and an overfill valve assembly, wherein the overfill valve assembly that operably provides a fluid path between an inside of the refillable tank and outside the refillable tank to a surrounding environment, the overfill valve assembly comprising:
• an overfill valve normally biased in a closed position;
• an outlet;
• a manually activated actuator that, when actuated, opens the fluid path that fluidly couples the outlet to the inside of the refillable tank, wherein the actuator comprises a cam assembly fixedly engaged with a post normally biased in a closed position, and wherein the cam assembly comprises a ramp that operably allows the post to translate against the bias to an open position at least until the cam rotates to an end of the ramp;
• a connection assembly comprising a first length of tubing, a first connector affixed at a first end of the tubing, a second connector affixed at a second end of the tubing, and a manually operated valve, the first connector operably, fluidly connects to the valve assembly of the refillable tank and the second connector operably, fluidly connects to a source tank, and the manually operated valve operably, fluidly connecting the first connector with the second connector, and the first connector disposed at a ninety degree angle to the second connector,
• wherein the first connector comprises a first prong and a second prong, the first prong sized and shaped to engage with and actuate the overfill valve to move the overfill valve to an open position, and the second prong sized and shaped to engage with and actuate the fill valve to move the fill valve to an open position, when the first connector is operably affixed to the valve assembly.