Abstract: An apparatus and method for burning fuel in a combustion chamber having an exhaust port. The invention includes a combustion device having a burner head for burning fuel to produce a volitilization zone of high heat. The burner head is positioned in the combustion chamber directly beneath the exhaust port to assure a substantially vertical flame. The upright flame produces a zone of volatilization that continuously contacts the fuel on the burner to vaporize or volatilize a higher percentage of the fuel than in previous combustion apparatuses.

Abstract: A water tank assembly for a pressure resistance measuring apparatus for testing containers comprises a vertical water tank, an auxiliary water tank connected with the vertical water tank at an upper end portion of the vertical tank wherein the vertical tank has a smaller diameter than that of the auxiliary water tank, a cover attached to the vertical water tank, a nozzle assembly connected to the cover wherein a container to be tested is fixed to the lower end of the nozzle assembly, an opening end portion of the vertical water tank protruding into the auxiliary water tank, and wherein the vertical water tank and the auxiliary water tank store water and the water level of the auxiliary water tank is above the upper end portion of the vertical water tank.