Our air diffuser manifolds allow you to hook up several air diffusers to a single air line. Manifolds include a check valve to prevent water from filling your air line when not in use. A polyethylene underlay keeps diffusers from settling into the mud and prevents sediment erosion during operation. Standard air diffusers are 6" long. Standard airline connection is 1/2" poly tubing. Manifolds can be custom built to a wide variety of applications.