3-Valve Aluminum Air Manifold With Valves3 Valve Air Manifold Made from high grade anodized aluminum, all brass fittings, and NEW! Micro Adjust precision ball valves make these air manifolds the best built valved outlets available in this industry by far. Each manifold comes standard with our powder coated oven baked steel mounting bracket with 6 mounting holes. This complete air manifold is designed to be mounted either inside or outside your building, on your dock or anywhere else you want