Abstract: A quick-disconnect gas pipeline comprises a quick-disconnect device (QDD) which comprises a QDD male end and a QDD female end, and a gas hose. The QDD male end is connected to the gas pipeline inside the heating system and the QDD female end is connected to the gas hose outside the heating system. When the heating system is not used, it is easy to disconnect the QDD to prevent people from tripping over the long gas pipeline.

Abstract: Provided herein are, among other things, a power sprayer comprising a housing, a trigger, a battery, a pump switch, a hose connector, a spray nozzle having a spray inlet and a spray outlet, a valve having a valve inlet and a valve outlet, a motor powered pump within the housing having a pump inlet and a pump outlet, wherein the valve outlet is in fluid communication with the spray nozzle inlet, the pump outlet is in fluid communication with the valve inlet, the pump inlet is in fluid communication with the hose connector, and the pump switch is electrically coupled to the motor powered pump and the battery.