Penn Plax Lok-Tite Plastic Valve with Hanger 5 Gang ValveThe Penn Plax Lok Tite Gang Valve will allow you to control multiple airlines from one or two air pumps. The standard sized barb fittings hold your airline firmly in place, and the control knobs are easy to set with no need for constant readjustment. Easily installs on your aquariums frame, with airline hose clips that will save you from a tangled mess of hosing Easy to use Extra 1 2 valve Automatic anti siphon Made of tough plastic Will not corrode