These valves are available to set up your own plumbed system for a large aviary using your parts or to change out valves on your existing Bird Butlers or pipe system. The valves come pre-wrapped with tape and are ready to screw in. The heavy valve is recommended for Quakers, Senegals, Pionus, Ringnecks, small Amazons, Timneh Greys, Solomon Island Eclectus, and similar sized parrots. Has 1/8" male pipe thread. Price is for valve ONLY.