The Elite 4-way air control valve allows you to run up to 4 air driven products at once. Each valve has a flow adjuster which enables you to regulate air output to each devise. The valve is leak proof and suitable for fresh or saltwater aquariums. • Splits the airflow into multiple streams • Molded design, no seal rings, screws, rivets, joints or seams • Will not leak up to 5 p.s.i. • Hanger fits all standard aquariums • Suitable for fresh or saltwater