Quick release propane couplings are an ideal safe way to disconnect propane hosing from the cylinder without the hassle of unscrewing the regulator . They can be fitted in the hosing section and are ideal if you store the propane cylinder outside but want to run the hosing through an open window while working, finish working and simply disconnect the coupling to split the hose. The coupling pushes together until you hear a click and to disconnect pull back on the top ring and the to pieces will pull apart. Both couplings comply with ISO 7289.