Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

LOW PRICES and FAST SHIPPING SINCE 1999 !

99.5% Of All Items In Stock For Same Day Shipping!

Air Gap Faucets

Air Gap Faucets

Air Gap Faucets For Reverse Osmosis Systems

Air gap faucets for Reverse Osmosis systems dispense water just like standard non- air gap faucets, but have the air gap built into the base of the faucet. Air gap faucets are designed to prevent backflow by incorporating a "backflow prevention" method called an "air gap".

Air gap faucets have three connections on the bottom of the faucet. The center threaded stem of the faucet is the RO water inlet connector from the tank. This connection is the same on air gap faucets and non- air gap faucets alike, and can use 1/4" or 3/8" tube. There are two more connections on the bottom of air gap faucets. One large connector (3/8") and one small connector (1/4"). Use a piece of 3/8" poly tube to connect the 3/8" connection of the base of the faucet to the 3/8" inch drain saddle. Be very sure that there are no droops in the 3/8" drain line. Air gap faucets require a 3/8" drain line and a 3/8" drain saddle. The 3/8" line from the base of the faucet to the drain saddle is not pressurized, it will work by gravity, just like the sink drain. That is why it must be 3/8". The waste line from the Reverse Osmosis system is 1/4". The water pressure forces the water out of the system and it enters an air gap faucet via the 1/4" connector on the base of the air gap faucet. Internally, inside of air gap faucets the water enters a small chamber in the back of the faucet. The water enters at the top and falls into the larger hole and 3/8" drain tube in the bottom of the air gap. There is a hole in the back of the faucet the goes into the air gap. The hole is part of the air gap device. It must remain open and free of debris. A faucet without a hole is not an air gap faucet. This hole has waste water go into the top and out the bottom. Water drops past the hole into the 3/8" waste line. This water action creates noise that comes from the open hole in the back of air gap faucets. Air gap faucets are noisier than non- air gap faucets. Some homeowners object to the noise that can come from an air gap faucet. Non- air gap faucets are much quieter

Air gap faucets are required in some areas as a matter of local codes, not in other areas. You will need to check your local code to see if you are required to install an air gap faucet. In some locals you can install a inline check valve in the drain line for backflow prevention. This allows the use of a non- air gap faucet, thereby eliminating the noise associated with air gap faucets.

When code allows, the 1/4" waste water out of the system is connected to a 1/4" drain saddle installed on the drain pipe under a sink. This is also a very quiet installation. Air gap faucets can be installed as non air gap faucets by installing a 1/4" drain saddle. Remove the 1/4" waste water line out of the reverse osmosis system from the base of the faucet and attach it to the 1/4" drain saddle. Remove the 3/8' drain line from the air gap faucet and discard. See more on silencing noisy air gap faucets

  1. Drain Saddles For Reverse Osmosis RO Water Systems
    Drain Saddles For Reverse Osmosis Systems
    Drain Saddles For Reverse Osmosis Systems - Connects reverse osmosis system drain tube to sinks drain pipe. Standard size drain saddle is 1/4". 3/8" Drain Saddle typically used in conjunction with optional air gap faucet. Learn More
    $8.99 Special Price $5.99 As low as $3.99
  2. Replacement Air Gap Faucet For RO Reverse Osmosis Pure Water Systems
    Replacement Air Gap Faucet For Reverse Osmosis Pure Water Systems
    Replacement Air Gap Faucet For Reverse Osmosis Pure Water Systems - Calif. Low Lead Level - Usually used in conjunction with 3/8" Drain saddle. Has 3 line connections - one for the drain, one for the pure water to dispense and one for the waste water from the RO system. For use where required by code. 7" high. Long reach - Extends 5 1/2" from center of faucet. Learn More
    $59.99 Special Price $29.99 As low as $22.99
  3. Touch Flo Long Reach Faucet TF-9830-00F Air Gap Faucets
    HALF PRICE CLOSEOUT SALE - Long ReachTouch Flo Faucet TF-9830-00C Air Gap Faucet
    HALF PRICE CLOSEOUT SALE - Touch Flow Faucet TF-9830-00F Air Gap Long Reach High Quality Faucet - Well Known As The Premium Faucet Manufacturer, These are Some Of The Last TouchFlo Faucets Still Available. California Prop. 65 Low Lead Level. Distributor Closeout. One time sale price at 50% off. When they are gone, they are gone. Mix and match colors for quantity discounts. Dealers stock up now while we still have them! Learn More
    $79.99 Special Price $39.99 As low as $29.99
  4. John Guest water faucet adaptor with quick connector for poly tube
    John Guest ® water faucet adaptor with quick connector for poly tube
    John Guest ® faucet adapter with quick connector for poly tube - Easy quick connect push in installation. 7/16-24 UNS thread to attach to faucet. Cut the end of the tube square ensuring it is free of score marks and burrs. Slip all of the way into and it locks shut. Easy to remove and reuse. 7/16-24 UNS thread to attach to faucet. Choose your tube size. CI3208U7S and CI3212U7S Learn More
    $8.99 Special Price $4.99 As low as $3.49
  5. faucet-Black-AG (QMP-102 AG BL Air Gap Black Long Reach Faucet - Prop. 65)
    faucet-Black-AG (QMP-102 AG BL Air Gap Black Long Reach Faucet - Prop. 65)
    Black Designer Faucet - Air Gap Black Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  6. Faucet-BR-nickel-AG (QMP-102 AG BN Brushed Nickel Air Gap Long Reach Faucet - Pro...
    $49.99 Special Price $39.99
  7. faucet almond-AG (QMP-102 AG AL Air Gap Almond Long Reach Faucet - Prop.65)
    faucet almond-AG (QMP-102 AG AL Air Gap Almond Long Reach Faucet - Prop.65)
    Almond Colored Designer Air Gap Long Reach Faucet - Prop.65 Learn More
    $49.99 Special Price $39.99
  8. faucet Bisque-AG (QMP-102 AG BQ Air Gap Bisque Long Reach Faucet - Prop. 65)
    faucet Bisque-AG (QMP-102 AG BQ Air Gap Bisque Long Reach Faucet - Prop. 65)
    Bisque Designer Faucet - Air Gap Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  9. faucet Gold-AG (QMP-102 AG GD Air Gap Gold Long Reach Faucet - Prop. 65)
    faucet Gold-AG (QMP-102 AG GD Air Gap Gold Long Reach Faucet - Prop. 65)
    Gold Designer Faucet - Air Gap Gold Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  10. faucet Pewter-AG (QMP-102 AG PW Air Gap Pewter Long Reach Faucet - Prop. 65)
    faucet Pewter-AG (QMP-102 AG PW Air Gap Pewter Long Reach Faucet - Prop. 65)
    Pewter Designer Faucet - Air Gap White Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  11. faucet Rub-Bronze--AG (QMP-102 AG BZ Air Gap Oil Rubbed Bronze Long Reach Faucet ...
    faucet Rub-Bronze--AG (QMP-102 AG BZ Air Gap Oil Rubbed Bronze Long Reach Faucet ...
    Oil Rubbed Bronze Designer Faucet - Air Gap Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  12. QMP-102- Satin-Nickel Long Reach Air Gap Faucet- Lifestyle Photo-1000
    faucet Satin-Nickel-AG (QMP-102 AG SN Air Gap Satin Nickel Long Reach Faucet - Pr...
    Satin Nickel Designer Faucet - Air Gap Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  13. GGN - Satin-Nickel Long Reach Air Gap Faucet - 1000
    $49.99 Special Price $39.99
  14. faucet SS-AG (QMP-102 AG SS Air Gap Bright Stainless Steel Long Reach Faucet - Pr...
    faucet SS-AG (QMP-102 AG SS Air Gap Bright Stainless Steel Long Reach Faucet - Pr...
    Designer Bright Stainless Steel Air Gap Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  15. faucet white-AG (QMP-102 AG WH Air Gap White Long Reach Faucet - Prop. 65)
    faucet white-AG (QMP-102 AG WH Air Gap White Long Reach Faucet - Prop. 65)
    White Designer Faucet - Air Gap White Long Reach Faucet - Prop. 65 Learn More
    $49.99 Special Price $39.99
  16. GGN-Faucet-AG-P-Chrome Air Gap Faucet-Long Reach-1000
    $39.99 Special Price $29.99
  17. faucet_Air_Gap-TF-9830-B (Black Air Gap Faucet - Long Reach)
    $59.98 Special Price $49.98
  18. faucet_Air_Gap-TF-9830-BC (Brushed Chrome Air Gap Faucet - Long Reach)
    $59.98 Special Price $49.98
  19. faucet_Air_Gap-TF-9830-PB (Polished Brass Air Gap Faucet - Long Reach)
    $59.98 Special Price $49.98
  20. faucet_Air_Gap-TF-9830-W (White Air Gap Faucet - Long Reach)
    $59.98 Special Price $49.98
  21. JOHN GUEST- 1/4'' Natural/ Clear Poly Tube- Clear Replacement Tubing for Water Filter Systems- 1000
    John Guest ® Poly Tubing For Pure Drinking Water Systems
    John Guest ® Poly Tubing For Pure Drinking Water Systems - 1/4", 3/8" and 1/2" O.D. (Outer Dimension) High Grade Drinking Water Tubing. Speedfit quick connector compatible. Choose the 3/8" O.D. For Use With Optional Drain Saddle For Air Gap Faucet. Sold by the foot. Order 20 to get 20 feet. Learn More
    $0.27
  22. GOES GREEN-Air Gap Oil Rubbed Bronze Long Reach Faucet- 1000
    faucet Rub-Bronze--AG-GGN (GGN-Faucet-BZ-AG Air Gap Oil Rubbed Bronze Long Reach ...
    Oil Rubbed Bronze Designer Faucet - Air Gap Long Reach Faucet Learn More
    $39.99

Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.