5-Stage Reverse
Osmosis Filtration System

Installation and instruction Manual

Parts Checklist
RO Manifold Head
RO Membrane
3 Pre-Filter Housings and Filter Cartridges
Water Storage Tank
Air Gap RO Faucet
(Sold Separately)
Feed Water Adapter
Color Tubing Set
Drain Saddle
Storage Tank Valve (2) 1/4" MPT x 1/4" Quick Connect Inlet & Outlet Fittings
Housing Wrenches
Leak Stop Valve
Spare O-rings, Fittings, and Teflon tape (package quantity may vary)
Tool List
We recommend having the following tools on hand to help with the installation process:
Utility Knife
Phillips Screwdriver
Adjustable Wrench
Variable Speed Electric Drill
3/8" Drill Bit for drain saddle
1/8" Diamond-Tip Drill Bit (if installation requires faucet opening)
1" Diamond-Tip Drill Bit Hole Saw (if installation requires faucet opening)
Advanced 5-Stage RO Filtration Process
Stage Description Filter Life
1 SP-AP110 Sediment Filter 6 months
2 SP-GAC-10R GAC Filter 6 months
3 SP-CBC-10 Solid Block Carbon Filter 6 months
4 SP-RO-075R RO Membrane 12 months
5 SP-ROPC Polishing Carbon Filter 12 months

Use the color-coded tube connections to complete the installation more easily:

Connection Tube Color Description
Air Gap Faucet Blue Polished water to the faucet
Feed Water Valve White Tap water to the RO system inlet
Tank Valve Yellow Filtered water to storage tank
Membrane Waste Connector Black Membrane waste to 1/4" air gap faucet inlet
Air Gap Faucet Outlet Red 3/8" air gap faucet outlet to drain saddle
Preparing for Installation

Determine the location for the RO system, RO faucet, and water storage tank.

  • The faucet can be installed in a pre-drilled hole on the sink if available. If drilling a new hole, make sure not to damage any plumbing or wiring that may be under the countertop or sink.
  • The pressure storage tank can stand vertically upright or lay horizontally.
  • The storage tank and RO faucet can be up to 5 feet apart. If the tank needs to be farther away than 5 feet, we recommend a booster pump to supply adequate pressure at the faucet.
Tubing Connection Tips
Insert Tubing Release Tubing
Push tubing in until it stops.
Gently pull tubing to ensure tubing is locked in fitting.
Push in the collet. While collet is being pushed in, pull tubing out of fitting.
Installation Instructions


  • This system is for cold water supplies only. Do NOT install the system on the hot water supply line. Hot water will damage the system.
  • Installation and use must comply with all state and local plumbing codes.
  • This system unit is for indoor use only.
  • A pressure regulator is required if incoming water pressure is over 80 psi.
  • It is highly recommended to shut off the water supply to the system unit when it will not be in use for longer than a week.
  • Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.

Prepping RO:

  1. Remove all components from the box. Using the Parts Checklist, verify that all of the parts are included. Once all parts have been verified, continue on to step 2.
  2. Remove the filter cartridges from the filter housings and unwrap. Insert the filter cartridges into the filter housings.
  3. Ensure the O-rings on the filter housings are seated properly in the grooves.
    • Attention! Filter cartridges must go in a specific order: Stage 1 (SP-AP110), Stage 2 (SP-GAC-10R), Stage 3 (SP-CBC-10). Hand tighten the filter housings back onto the RO system in a clockwise direction. Use the filter wrench to tighten filter housing 1/4 turn. *Once your RO system is in service, if a filter housing is leaking, use the filter housing wrench to tighten. Do not overtighten the filter housings. Overtightening may damage the O-ring(s), cause water leaks, or affect overall system performance.
  4. Disconnect the tubing from the fitting on the 4th stage RO membrane housing cap, as shown on the top of page 11.
  5. Remove the end cap from the housing by turning it counterclockwise as shown below:
  6. Insert the RO membrane cartridge into the housing. Ensure that the O-rings on the water tube of the cartridge are fully seated in the membrane housing (the cartridge will be seated flush with the housing). Make sure that the brine seal on the membrane seals without gaps or wrinkles inside of the housing. Refer to the diagram on the top of page 12.
  7. Make sure the O-rings on the housing and in the housing cap are properly seated. Replace the housing end cap, using the housing wrench to tighten. Do not overtighten.
  8. Reconnect the tubing, using the push fitting to insert it back into the membrane housing cap.
Adapt-A-Valve Installation

Attention: The water supply line to the system must be from the cold water supply line only. Hot water will severely damage your system

  1. Turn off the cold water supply to the faucet by turning the angle stop valve completely off.
  2. Open the cold water sink faucet to relieve pressure from the water line.
  3. Ensure the O-rings on the filter housings are seated properly in the grooves.
  4. Prior to disconnecting the faucet connector, lay down a bowl or bucket to catch any water drips. Unscrew the kitchen faucet connector pipe from the cold water supply valve.
  5. Ensure the O-ring is seated inside the feed water adapter on the female end, and connect it to the cold water supply. Tighten using a wrench or pliers.
  6. Check that the O-ring in the kitchen faucet connector pipe is still properly seated. Connect the kitchen faucet connector pipe onto the male end of the feed water adapter, tightening with a wrench or pliers.
  7. Remove the blue locking clip from the adapt-a-valve. Insert the 1/4" white tubing that goes to the reverse osmosis system. Reinsert the locking clip.
Faucet Installation

Note: Some sinks have pre-drilled 7/8" to 1-1/8" holes that are suitable for installation of your Drinking Water faucet. If your sink has such a hole, skip to Step 4.

Notice: Please refer to recommendations from the countertop or sink manufacturer or a professional for drilling a hole in a countertop or sink. The RO system manufacturer and supplier do not accept any responsibility for damage resulting from installing faucets in any surface, including but not limited to granite, marble, or porcelain sinks.

Recommendation for granite or marble countertops, porcelain sinks, and other surfaces: ALWAYS use a qualified professional for drilling a hole because these materials can crack and chip easily during the process.

Notice: Always use a diamond-tip drill bit and hole saw.

  1. Determine the desired location for the faucet on your sink, and place a piece of masking tape where the hole is to be drilled. Mark the center of the hole on the tape.
  2. Using a variable speed drill set on the slowest speed, drill a 1/8" pilot hole through both the porcelain and metal casing of the sink at the marked center of the desired location. Use a lubricating oil or liquid soap to keep the drill bit cool (if the drill bit gets hot, it may cause the porcelain or surface to crack or chip).
  3. Using a 1" diamond-tip hole saw, proceed to drill the larger hole. Keep the drill speed on the slowest speed and use the lubricating oil or liquid soap to keep the hole sawcool during cutting.
  4. Gather and identify the faucet pieces from the faucet parts bag and system parts bag.
  5. Slide the escutcheon onto the bottom of the faucet, lining up the holes on the base plate with the 3 inlet/outlet port stems on the faucet. The escutcheon has the rubber O-ring preinstalled.
  6. Connect the 1/4" black tubing to the brine input and connect the 3/8" red tubing to the brine output.
  7. Insert the blue, red, and black tubing and the stem through the pre-drilled hole.
  8. From the underside of the sink, slide on the slotted metal washer, spacer, star washer, washer, and mounting nut.
    • Check the orientation of the faucet, then tighten the locking nut securely with a wrench. Do not overtighten fittings.
    • (Optional) Install the spacer if the countertop is less than 1/2" thick (e.g., a stainless steel sink). You do not need a spacer if your countertop thickness is 1/2" or more.
Mounting the Drain Saddle

Warning: The drain saddle creates a wastewater connection with the sink drain and is designed to fit a standard 1-1/2" OD drain pipe. Drain saddles should always be installed at least 1-1/2" above the nut of the p-trap on a vertical or horizontal drain. Do not install near a garbage disposal. Take extreme caution to only drill through one side of the drain pipe.

  1. Locate a spot at least 1-1/2" above the nut of the p-trap on the drain pipe that is convenient for installing the drain saddle. It is recommended to install on horizontal piping to minimize dripping noise.
  2. The small, square, black foam gasket with a circle cut out of the middle must be applied to the inside of the drain saddle. Remove the backing and stick to the drain saddle as shown.
  3. Using the 3/8" drill bit, drill into the drain pipe.
  4. Assemble the drain saddle around the drain pipe and align the opening with the hole drilled in the previous step - you may use a small screwdriver to feed through the drain saddle hole to aid with the alignment.
  5. Measure the 3/8" red tube from the faucet to the drain saddle on the drain pipe and make a straight cut to the correct length.

Notice: The red 3/8" drain tube to the drain saddle must be as SHORT and STRAIGHT as possible. Make sure there is a downward slope from the faucet to the drain saddle to allow for proper drainage without causing the tube to stretch or sag.


  1. If tubing is looped, it can cause water to come out of the air gap faucet.
  2. Looped tubing can shorten the life expectancy of the RO membrane.
Installing the Storage Tank Valve

Warning: Do not adjust the air valve on the storage tank. It has been preset to 8-10 psi by the manufacturer.

  1. Remove the plastic stand at the top of the tank.
  2. Use the Teflon tape to wrap the 3/8" fitting at the top of the tank 6 times.
  3. Place the storage tank on its stand in the desired location, and position either horizontally or vertically.
  4. Insert the yellow tubing from the 5th stage (Post Carbon Inline Filter) into the storage tank valve, about 1/2" deep (see the Advanced 5-Stage RO Filtration Process diagram for reference).
  5. Turn off the storage tank valve.
Installing the Leak Stop Valve

Note: When the leak stop valve detects a leak, it will automatically shut off the inlet water to the RO system, protecting your home from potential water damage.

Warning: The valve is highly sensitive to water. Please install with caution, as the leak stop pad easily absorbs water and will require replacement every time it comes into contact with water.

  1. Find a dry, flat surface next to the RO system to place the leak stop valve.
  2. Screw the leak detector to the cabinet floor or utilize the double sided tape to mount to the cabinet floor.
  3. Measure from the adapt-a-valve to the leak detector inlet and cut the 1/4" white inlet tubing.
  4. Connect the tubing from the feed water valve to the inlet port of the leak stop valve.
  5. Measure from the outlet of the leak detector to the 1st stage pre-filter housing.
  6. Connect the 1/4" white tubing from the outlet port of the leak stop valve to the inlet port on the 1st stage sediment pre-filter housing.
Starting the System

Warning: Make sure all tubing has been properly connected. Check that all of the connections are secure before turning on the water supply. The leak detector cartridge should be installed after initial system startup. This is to ensure the leak detector cartridge does not need to be replaced during startup due to tubing that is not inserted properly or a loose housing. Refer to the checklist on the next page and diagram below:

  • The blue faucet tubing connects to the 5th stage post-carbon inline filter.
  • The white water-supply feed tubing connects to the 1st stage sediment cartridge housing.
  • The yellow storage tank tubing connects to the 5th stage post-carbon inline filter at the union tee fitting.
  • The 1/4" black wastewater tubing from the RO faucet connects to the flow restrictor.
  • The 3/8" red wastewater tubing from the RO faucet connects to the drain saddle.
  1. Close the storage tank valve.
  2. Turn on the cold water supply and the undersink adapter valve. If leaks are present, turn off the cold water supply valve and correct the problem before proceeding.
  3. Open flush valve for 3 minutes to purge RO membrane. Close flush when completed.
  4. Turn on the RO faucet to release any air from the system.
  5. After several minutes, water will begin to drip or trickle from the RO faucet.
  6. Let it trickle for approximately 10 minutes, then turn off the RO faucet.
  7. Turn on the storage tank valve. It will take 1 to 3 hours for the storage tank to fill, depending on your home’s water pressure. You will know the tank is full when you hear the water stop running to the drain pipe.
  8. After the tank is full, flush the system by turning on the RO faucet until the water in the tank is completely discharged.
  9. After the tank is full, flush the system by turning on the RO faucet until the water in the tank is completely discharged.

    Warning: Do NOT drink the first tank of water produced by the system. We recommend refilling and flushing the tank twice before use.

  10. After the tank is emptied, turn off the RO faucet and allow the tank to refill. Refilling will usually take 1 to 3 hours.
  11. Turn on the faucet and allow the tank to flush once more.
  12. Turn off the faucet and allow another 1 to 3 hours for the tank to refill.
  13. Once you have determined the RO system has no leaks, close the adapt-a-valve, open the leak detector drawer, and install the cartridge/pad. Close the leak detector drawer and open the adapt-a-valve.
  14. After the tank has refilled for a third time, you can begin to enjoy your clean, freshly filtered water.

Check daily for leaks during the first week of use. Check for leaks periodically after the first week.

Water may be milky or cloudy during the first week of use. This is caused by air bubbles in the water and is normal. The water is completely safe to drink and use.

Tubing Connection Checklist
Feed Water Adapter Drain Saddle
Feed Water Valve Line to Stage 1 (Sediment Housing)of RO system.
Stage 3 (Carbon Block Housing) Shut-off Valve
Stage 4 (RO Membrane Housing) Wastewater Line & Flow Restrictor (RO Membrane Housing)
Yellow water line to storage tank & white water line to RO membrane housing Blue filtered water faucet tubing & 1/4" black wastewater line & 3/8" red wastewater line
Recommended Maintenance

To help your system achieve maximum efficiency and service life, perform the following recommended maintenance procedures.

Note: This RO system utilizes filter cartridges that must be periodically replaced to maintain system performance. Frequency of changes may vary depending upon water quality.

Filter Replacement Set
SP-RO125 One Year Filter Replacement Set for SP-RO100 RO Systems
Stage Description Filter Life
1 SP-AP110 Sediment Filter 6 months
2 SP-GAC-10R GAC Filter 6 months
3 SP-CBC-10 Solid Block Carbon Filter 6 months
4 SP-RO-075R RO Membrane 12 months
5 SP-ROPC Polishing Carbon Filter 12 months
  • Filters may be stored for several years.
  • Store unopened, sealed filters in an airtight container to extend shelf life and protect from unwanted odor.
Membrane Cartridges
  • Dry-packed RO membrane cartridges typically have a one-year shelf life. To extend shelf life, keep the unopened, sealed membrane element in a refrigerator.
  • After the first use, run the RO system every day for 10-15 minutes to maintain membrane performance.
  • If the RO system will not be used for several weeks, drain the storage tank completely. Open the flush valve for 3 minutes to purge the RO membrane. Be sure to fill and drain the tank 2 times before using the system again after a period of non-use.
Replacing Filter Cartridges
  • Use a drip pan or similar container to catch any water that may spill when the filter housing is removed.
  1. Shut off the water supply to the RO system.
  2. Turn off the storage tank valve.
  3. Turn on the RO faucet.
  4. Open the leak detector drawer and remove the cartridge/pad. Close the leak detector drawer.

    Note: If the housing is difficult to unscrew, try unplugging the fitting or tubing to release air and water pressure inside the housing.

  5. Once the housing is opened, remove the used filter and discard.
  6. Unwrap and insert the new filter cartridge.
  7. Make sure the O-ring is in place, then replace the housing on the system by screwing it back on in a clockwise direction. Use the housing wrench to tighten, being sure not to overtighten.
  8. Repeat the process for the 2 remaining filter cartridges.
  9. Once all of the cartridges have been replaced, turn on the water supply and check for leaks.
  10. If there are no leaks. Ensure the area is dry. Open the leak detector drawer and install the cartridge/pad. Close the leak detector drawer.
  11. Warning: Do NOT drink the first tank of water produced by the system. We recommend refilling and flushing the tank twice before use.
Replacing Membrane Cartridges
  1. Unscrew the cap of the membrane cartridge housing.
  2. Slide out the used cartridge and discard.
  3. Unwrap and insert the new RO membrane cartridge, with the two O-ring side entering the housing first. Be sure the cartridge is fully seated in the housing. Refer to the diagram:
  4. Screw the cap back onto the housing, ensuring that the O-ring is still in place.
  5. Open flush valve for 3 minutes to purge the RO membrane. Close the flush valve when completed.
  6. It may take 10-20 minutes for flow rate to return to normal after installation of the new membrane.
  7. When flow rate has returned to normal, turn on the storage tank valve. After 1 minute, turn off the RO faucet.
  8. Warning: Do NOT drink the first tank of water produced by the system. We recommend refilling and flushing the tank twice before use.
System Cleaning

Note: We recommend performing the following cleaning procedures for the system and tank every 12-18 months.

  1. Shut off the water supply to the RO system.
  2. Open the RO faucet to depressurize the RO system and storage tank.
  3. Remove the filter cartridges, post-filter cartridges, and RO membrane cartridge. Discard and prepare for cleaning. If reusing the RO membrane, place it in a clean, sanitary place.
  4. Wash the internal housing areas with warm, soapy water and a brush or sponge. Do not scratch the surfaces.
  5. Remove the O-rings and replace or clean. Make sure to clean O-ring grooves on housings thoroughly.
  6. Rinse off housings with clean water.
  7. Replace O-rings and lubricate according to the O-ring manufacturer specifications.
  8. Leaving the filters out, replace the Stage 2 and 3 empty filter housings by hand tightening them onto the unit. Measure and pour 1/4 cup of common household bleach into the first filter housing (Stage 1) and hand tighten onto the unit.
  9. With the RO faucet in the closed position, turn on the incoming water supply to the system. Let the unit fill with water (approximately 8 minutes), allowing the bleach to dilute.
  10. Let the system sit idle for 1 minute and turn off the incoming water supply.
  11. Drain the system completely by opening the RO faucet. Close the RO faucet once the system is completely drained.
  12. Open the angle stop. Let the system fill again (approximately 8 minutes) and sit idle 10 minutes before draining the system again.
  13. Turn off the incoming water at the adapt-a-valve and open the faucet to make sure all the water has been drained.
  14. Open the RO membrane housing and reinstall the RO membrane. Refer to page 30 for directions on installing the membrane.
  15. Remove the filter housings for Stages 1, 2, and 3 and empty the water.
  16. Insert the new cartridges for Stages 1, 2, and 3. Then screw housings back onto the RO manifold.
  17. Make sure the storage tank is empty. Check the pre-charge pressure with a pressure gauge. The average empty tank pressure should be 8-10 psi.
  18. Follow the start-up instructions on page 23.
  19. Keep a maintenance record for the RO system that includes information such as replacement parts, services performed and dates, and service providers.

Warning: Turn off the system before servicing or inspection.

Problem Possible Sources Solution
Milky Water Air bubbles in the system This is a normal occurrence upon system startup. The milky color will disappear with normal use in one to two weeks.
Faucet Noise
  • Air gap faucets
  • Drain saddle location
  • Restricted drain line
  • Will stop when the system shuts down.
  • Make sure the drain saddle is located above the p-trap.
  • Drain line blockages can be caused by debris from garbage disposals or dishwashers.
Lack of Water Flow from Faucet
  • Fresh system startup
  • Low air pressure in storage tank
  • Low water pressure
  • Kinked tubing
  • Full pre-filter cartridges
  • Full RO membrane cartridge
  • Upon startup, the storage tank will take about 1 to 3 hours to fill.
  • Add pressure to the storage tank. The air pressure should be 8-10 psi when empty.
  • Add a booster pump.
  • Check that all tubing lines are straight and free from kinks.
  • Replace the pre-filter cartridges.
  • Replace the RO membrane cartridge.
System not Draining Clogged flow restrictor Replace the flow restrictor.
System Leaks
  • Loose fittings
  • Twisted O-rings
  • Drain saddle valve misaligned
  • Tighten fittings as needed.
  • Replace the O-rings, using the correct lubricant.
  • Realign the drain saddle valve with the drilled hole.

SpiroPure warrants that the water filtration system delivered will be free from any defects in workmanship or materials. If your SpiroPure water filtration system fails because of a manufacturing defect within one (1) year from the date of the original purchase, SpiroPure will exchange the defective water filtration system for a new SpiroPure water filtration system without charge.

SpiroPure's obligation to the customer under these warranties shall be limited, at its option, to replacement of items covered by these warranties.

Damage to any part of this system because of misuse, misapplication, negligence, alteration, accident, installation, or operation contrary to our instructions, incompatibility with accessories not installed by SpiroPure, or damage caused by freezing, flood, fire, or Acts of God are not covered by this warranty. In all such cases, regular charges will apply. This limited warranty does not include service to diagnose a claimed malfunction in this unit. This warranty is void if the claimer is not the original purchaser of the unit or if the unit is not operated under normal municipal water or well water conditions.

We assume no warranty liability in connection with this system other than that specified herein. This warranty is in lieu of all other warranties, expressed or implied, including warranties of fitness for a particular purpose. SpiroPure’s liability hereunder shall not exceed the cost of the product. Under no circumstances will SpiroPure be liable for any incidental or consequential damages or for any other loss, damage, or expense of any kind, including loss of use arising in connection with the installation or use or inability to use the covered items. These warranties may change at any time without notice.

Some states do not allow limitations on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages. Therefore, the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from state to state. You should consult applicable state laws to determine your rights. So far as is consistent with implied warranties of merchantability and fitness for a particular purpose, the warranties are limited in duration to one (1) year from the date of original shipment.

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