The Q-Series is the ultimate "user friendly" inline filter on the market. Replacement of the spent media bed is completed in a matter of seconds by detaching the filter body from a permanent head with a twist of the wrist. The new filter body is just as easily threaded into the head and the replacement is then complete. The Q-Series is also available with the optional Twist Tap® in-head valve system, which automatically turns the supply water off when the body is disconnected from the head. No tools. No drips. No hassles.