GREENHOUSE O2 INFUSION SYSTEM
OPERATION AND MAINTENANCE MANUAL
Toob Sales Company
Ph: (800) GET- HEAT
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Table of Contents
Overview .............................................................................................................................................................3
System Parts .......................................................................................................................................................4
Infusor Module ...................................................................................................................................................4
Installation ..........................................................................................................................................................8
Shutdown..........................................................................................................................................................10
SPECIFICATIONS ................................................................................................................................................11
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Overview
Operation:
Water flows at a constant rate through a fiber module cluster, where it passed over the large
surface area of the gas-filled fibers.
Scientific Principles: The supersaturation of water is made possible by the equilibrium that
exists between the dissolved concentration of a gas in a liquid, and the partial pressure of that
gas above the liquid. The proportionality constant that relates the partial pressure to the
concentration in the dissolved phase is called Henry’s Constant. The mass transfer modules
contain hydrophobic microporous hollow fibers that provide a very large interface area of fiber for
the mass transfer of gas into the liquid. Presently no other equipment can infuse as much
stabilized gas (e.g. CO2, oxygen, propane, ethene, etc) into water with as small amount
of gas lost to the atmosphere or the potential for vapor intrusion.
Figure 1 Microporous hollow fiber
Figure 2
Fiber module
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System Parts
Infusor Module
1. The infusor module is used to infuse water with oxygen to create highly oxygenated water.
a. Oxygen
Metering Valve
d. Check valve
e. Water inlet
b. Push To
Connect
f. Mounting
Bracket
g. Vent
c. Oxygen Supply
Tubing
h. Water outlet
Figure 3
oxygen infusion module
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a. Oxygen Metering Valve
This valve is factory set and meters a preset amount of oxygen
into the device. Do not tamper with this unless the unit is to be used for special applications in
conjunction with a gas flow rotameter.
b. Push To Connect
c.
d.
e.
The Push To Connect fitting is used to quickly disconnect the tubing and
re insert quickly. Simply push the ring on the fitting inward to release, and at the same time pull
the tubing outward. To re insert, make sure the tubing is not marked or deformed on the end,
and that it is cut square, and simply push the tubing firmly into the fitting until it seats.
Oxygen Supply Tubing Connect Polyethylene tubing is used to transfer oxygen from the
gas hose adaptor to the oxygen metering valve.
Check Valve There is an in line check valve to prevent oxygen gas from going back into the
water supply. It also allows the water flow to be turned off downstream of the unit, without
turning the oxygen gas supply off. The gas flow to the unit will stop automatically.
Water inlet ½” NPT female pipe thread inlet. A water hose connection fitting is pictured.
This inlet can be plumbed in permanently if desired using plastic hose, PEX, or copper plumbing
connections.
Mounting Bracket There are two brackets included to mount the unit to a wall.
f.
g. Vent
h.
The purpose of this vent is to remove excess nitrogen and oxygen from the water
removed by the infusion process. It may drip some water occasionally, and it is provided with a
½” male thread that a drain can be connected to drain piping. DO NOT hard pipe this vent into
plumbing drain without an air gap to vent gas to atmosphere.
Water outlet The outlet is ½” NPT Female. A water hose connection fitting is pictured. This
outlet can be plumbed in permanently if desired using plastic hose, PEX, or copper plumbing
connections.
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Figure 4 infusor installation
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1. The unit can be used as a stand alone system with a hand held sprayer, with drip irrigation, or
even a fully automatic greenhouse watering system.
Figure 5 infusor unit with spray head
Figure 7 drip irrigation
Figure 6
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Installation
1. Mount the infusor unit vertically in a secure convenient location such as a wall near the
associated water lines for each unit.
2. Connect the oxygen regulator to the oxygen bottle, and connect oxygen hose to the regulator.
Figure 8 oxygen regulator
3. Connect the oxygen hose type “A” adaptor/push to connect to the Polyurethane tubing. Then
connect the green oxygen hose as shown in figure 10.
Figure 9
type “a” oxygen adaptor
Figure 10
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4. Attach the polyurethane tubing to the oxygen metering valve.
Push to
connect
5. Connect the inlet water line to the ½” NPT fitting or water hose connection.
Figure 11
6. Connect the outlet water line or hose to the ½” female outlet connection
Figure 12
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7. Connect the outlet water line to desired watering application device.( spray wand, drip
irrigators, ect.
8. Turn on the oxygen supply, set pressure at 5psi above maximum water pressure from the
incoming supply. example: if incoming water (with valves turned off) is 60 psi, set the
oxygen regulator at 65 psi.
Main shut
off valve
Regulated pressure
reading
Pressure regulator
control valve
Figure 13 oxygen regulator
Shutdown
1. Short term shutdown
When shutting down the unit for limited periods, such as a few hours or days, the oxygen would
not have to be turned off as long as water pressure is maintained, and not flowing from outlet
pipe. This means that there would be a valve on the downstream water line that would not
allow water to continuously flow when not in use.
NOTE: If the water is shut off upstream of the unit and the oxygen is left on, the gas will
continue to flow. If the water is turned off upstream, the gas must be turned off.
2. Long term shutdown
When shutting down the unit for long periods, when the water is not going to be used for
watering frequently, the water can be turned off upstream of the unit, and the water pressure
released or drained from the system. In this case, the oxygen bottle must be turned off using
the main knob on tank.
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SPECIFICATIONS
Water plumbing size requirements
Oxygen hose
Supply hose size
Pressure rating
Connection type
Clear polyurethane tubing
¼” ID. Goodyear (or equivalent ) grade “R”
200 psig
9/16 18 r/h oxygen type “B” male.
¼” od, 1/8” id,
o2 regulator setting
5 psi above supply water pressure
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Toob Sales Company
Ph: (800) GET- HEAT