Modular, Windowsill, Air Powered, Hydroponics Herb Garden/Experimenter

Step 5 Manifold Assy

Note - Manifold only necessary if multiple lines required... aka DWC unit. Should the DWC unit not be desired to take advantage of excess air, as in my first unit, Expandable Hydroponics System from Junk - Flood and Drain, the "self tapping screw valve" can be "installed" directly on the reservoir bottle cap. The soft plastic will provide a good seal and it will cost nothing to fix if you screw up again and again and again..... Gotta love seemingly endless, FREE, building materials, eh?

Please note that a gang valve, with it's individual line controls, would be preferred for multiple lines, but for those who do not require such controls................

WHAT I USED

1 ea several inch length of 1/2 inch CPVC tube
2 ea end caps for same
1 ea 13/64 inch drill bit
1 ea 1/64 inch drill bit
1 ea small, self tapping screw
Air tubing as required during assembly

WHAT I DID

2. Install end caps on each end.
1. Drill 1 ea 1/64 inch hole, near one end, into, but not through tube.
3. Tap 1/64 hole using small, self tapping screw and screw in fully when complete.
1. Drill 3 ea 13/64 inch holes into, but not through, tube as shown.
3. Insert aquarium air tubing securely into holes as required.(not shown)

PRESTO - A one input / two output (at least in this case) air pressure manifold with a passive, adjustable, pressure relief valve. Please excuse any incorrect terminology. Additional holes (ports) could be added as required until maximum air usage limit is reached or reservoir no longer empties completely.