We recommend using the existing brass connection for the connection because it is installed at the lowest possible point of the tank. Depending on the available space, portable use of the tank a “flexible" connection has proven its worth. This can be easily installed using hose nozzles and a connecting piece of hose. For safety/space reasons, it often makes sense to guide the connection along the tank wall with an angle of 90 degrees. Especially in portable use a flexible connection better resits occurring vibrations, and thus prevents possible damage/breaking of connections.