Saim Air Regulator Valves VAT-3.5 3-Outlet Aquarium Air Control Pump Accessories for Fish Tank

Accurate Visual Controls - visual air flow
Convenient Flip Cover - protects against mineral build-up and helps maintain a clean appearance
Extra Input / Output - allow connection of additional pump or valve
Adjustable Universal Hanger - your valve is designed to fit securely on all tank frames
Non-Corrosive - all plastic construction makes this valve suitable for both fresh and salt water applications, safe anti-siphon