Air control valve controls how much air flows through the air stones - to not bother betta fish. Mason Jar Aquaponics system with 3 jars, and an air pump that delivers air to plant roots Herb garden/ salad garden / indoor garden all in one.
Idle Air Control Valves (IACV) are Electro-Mechanical Components tasked with maintaining idling speeds when a vehicle is cold and at normal operating temperatures. Attached to the intake manifold of an engine’s cylinder head by usually 2 or more hold down screws.
Controller valves sometimes end up in places where I don't want them, like right in the most visible spot in the garden! So rather than digging up half the garden to move them I chose in this case to hide them with an antique tool box that blended in nicely with everything around it. I cut the bottom of it out, set it down over the valves and voila`, problem solved. I guess this is what you call thinking inside the box.
Hydraulic Control Valve have the characters of high pressure, high flow rate and low pressure drop. By the using of wet-type solenoid, the valves have long product life. Low noise and no oil leakage. High pressure, high flow rate. This series of valves have greatly enhanced the pressure and flow rate compare with our conventional products. http://www.bstind.com/hydraulic-valve/hydraulic-control-valves.html
Cool Top 10 Best Directional Control Valves - Top Reviews