The luxury air gap lead-free drinking water faucet (N-109-AG-LF) is designed for reverse osmosis systems. It provides a dedicated dispensing faucet for purified water while also routing the RO drain line through a built-in air gap. That air gap helps prevent drain water from backing up into the RO system, which is why air gap faucets are commonly used in RO installations.
This faucet is a luxury-style option with a long-reach spout, ceramic disc valve, and multiple finish choices to match kitchen hardware.
What an air gap faucet is and why it matters
An air gap faucet is used with reverse osmosis systems that require an air gap connection. In addition to the purified water connection, the faucet includes two drain hose barb connections. Drain water leaves the RO system, travels up to the faucet, passes through the air gap, and then exits through a separate line that connects to the sink drain. This design provides a physical separation that helps prevent drain water from siphoning backward into the RO unit.
If your RO system requires an air gap and you install a non-air-gap faucet, you may not be able to complete the drain connection correctly.
Who Should Buy the Air Gap Lead-Free Drinking Water Faucet (N-109-AG-LF)?
Choose the N-109-AG-LF if you:
- Have a reverse osmosis system that requires an air gap drain connection
- Want a lead-free brass faucet that meets lead reduction requirements
- Prefer a long reach spout for easier filling and everyday use
- Want a ceramic disc valve for smoother operation and reduced drip risk
- Want a faucet available in multiple finishes to match your kitchen
Finish options
This faucet is available in multiple finishes, including matte black, chrome, brushed nickel, black, white, almond, polished brass, and oil rubbed bronze. Select the finish that matches your sink and hardware.
Key features
- Available in multiple finishes
- Air gap faucet design for reverse osmosis systems
- Lead-free brass construction
- Compliant with the Lead Reduction Act
- Elegant long-reach spout for easier filling
- Quarter-turn handle flow control
- Ceramic disc valve mechanism
- 1-year leak warranty
- Higher quality than standard faucets with rubber washers
Compatibility and Installation for the N-109-AG-LF
- Air gap faucets are used almost exclusively with reverse osmosis systems, but not all RO systems require one.
- This faucet includes the additional drain connections needed for an air gap RO drain setup.
- Before ordering, confirm whether your RO system requires an air gap faucet and verify you have a drain connection layout that supports air gap routing.
- Faucets are sold individually. Case quantity is listed for bulk ordering and inventory planning.
How do I choose between an air gap faucet and a standard RO faucet?
Choose an air gap faucet when:
- Your RO system is designed to use an air gap connection
- You want the added backflow protection built into the faucet
Choose a standard RO faucet when:
- Your RO system does not require an air gap connection
- Your drain setup uses a different drain method and does not route through an air gap faucet
FAQs: Air Gap Lead-Free Drinking Water Faucet (N-109-AG-LF)
Q: What is an air gap faucet used for?
A: It is used with reverse osmosis systems that require an air gap drain connection and helps prevent drain water from backing up into the RO system.
Q: How is this different from a standard RO drinking water faucet?
A: A standard RO faucet only dispenses purified water. An air gap faucet also includes drain connections that route the RO drain line through an air gap.
Q: Does every reverse osmosis system need an air gap faucet?
A: No. Some RO systems require an air gap, and others do not. Confirm your RO system requirements before ordering.
Q: Why does the faucet have extra hose connections underneath?
A: Those are the drain hose barb connections used for the air gap drain routing.
Q: Is this faucet lead-free?
A: Yes. It is constructed from lead-free brass and complies with lead-reduction requirements.
Q: What type of valve does it use?
A: It uses a ceramic disc valve, which is designed for smooth operation and long-term reliability.
Q: What warranty is included?
A: The faucet includes a 1-year leak warranty.
Q: Can I install this myself?
A: Many homeowners can, but you must connect both the purified water line and the air gap drain lines correctly. If you are unsure, an installer can help ensure the drain routing is correct.
If your RO system requires an air gap, choose the N-109-AG-LF faucet in your desired finish and complete your installation with a cleaner look and built-in backflow protection.
Faucet Dimensions
