Abstract: Vaporizers are provided. A representative vaporizer includes multiple ovens, multiple valve seats, a needle valve, and an adjustment wheel. The multiple ovens are configured to vaporize a substance that is placed within the multiple chambers. The multiple valve seats that are coupled to the multiple ovens and each includes a valve chamber, outside air path, and oven path, wherein the multiple valve seats is configured to allow outside air to enter the multiple valve seat from the outside air path through the valve chamber and the oven path and into the multiple ovens. The needle valve that is rotatably received in the valve chambers of the multiple valves. The adjustment wheel that includes a thread bore, wherein the threads of the needle valve is rotatably received in the thread bore, wherein the adjustment wheel rotates and moves the needle valve to adjust the opening of the valve chambers, which adjusts the amount of air entering the multiple ovens.

Abstract: A representative vaporizer includes a main body assembly that includes the following: a power source, and a heating element that is electrically coupled to the power source; a cartridge assembly having at least one chamber that is coupled to the heating element and is configured to facilitate vaporizing a substance that is placed within the at least one chamber; a swivel hub that is attached to the main body assembly; and a swivel structure that extends from the cartridge assembly and couples to the swivel hub enabling the cartridge assembly to revolve around the main body assembly.