Use a 3/16th drill bit, then insert valve into drill chuck and screw in slowly being careful not to over tighten. Use a clean cut piece of airline tubing when attaching. Periodically check for hardened aquarium airline tubing creating a loose connection. For ultimate flow control in a fish room, we use the an Air Control Valve near the aquariums for fine tuning eliminating the need to get up on a ladder when using these metal valves in a fish room air manifold loop.
- Threaded Metal Valve
- Precise Air control
- Long Lasting
These valves are meant to be screwed into pvc. Often used with a Linear Air Piston Pump to run an air loop around a room filled with aquariums. Build your own custom gang valve using these. These last a lifetime and are used by most fish stores and fish breeding facilities.