Choosing the right wall mount air gap is essential for protecting your drinking water and ensuring a splash-free, compliant drainage setup. This guide highlights five reliable options from AIR GAP INTERNATIONAL and Everpure, focusing on compatibility with RO systems, water softeners, and condensate drains. Each product is described with key features, installation notes, and practical considerations to help you compare options quickly and confidently.
Summary of selected products:
- Reverse Osmosis Filter Wall Mount Air Gap (AG110-003, GAP-A-RO) — 1 GPM max flow; 1/4″ to 3/8″ connections; standpipe ready
- Reverse Osmosis Filter Air Gap (AG110-002, GAP-A-RO) — 1 GPM max flow; 1/4″ to 3/8″ connections; mounting bracket included
- Dual Air Gap for Water Softener and RO (AG130-001, GAP-CAP) — dual inlets; up to 7–8 GPM; splash protection
- Everpure Wall-Mount Air Gap Adapter (EV312339) — commercial-grade compatibility for Everpure faucets
- Water Softener Air Gap for Washing Machine Box (AG140-001) — 2″ drainbox fit; splash guards; 15–7 GPM range
Reverse Osmosis Filter Wall Mount Air Gap (AG110-003)
The GAP-A-RO AG110-003 serves as a compact wall-mount air gap for RO installations. It supports a 1/4-inch OD inlet from the RO unit and a 3/8-inch OD outlet feeding a standpipe, with included accessories for a secure mount. Its maximum flow rate is 1 GPM, and the unit stays dry on the outside at this maximum flow, reducing splash risk. This model emphasizes straightforward connection and reliable standpipe feeding, making it suitable for kitchen RO setups in homes and apartments.
- Inlet: 1/4-inch OD tubing; Outlet: 3/8-inch OD tubing
- Standpipe compatible; includes mounting accessories
- Maximum flow rate: 1 GPM; splash-free operation at max rate
Reverse Osmosis Filter Air Gap (AG110-002)
The AG110-002 air gap is designed for RO systems, with a 1/4-inch OD inlet and a 3/8-inch OD outlet that feeds a standpipe. It ships with mounting accessories to secure installation. Like the AG110-003, it emphasizes a dry exterior at the rated flow and a simple, reliable connection to the standpipe. This model is a practical option for homeowners upgrading an RO faucet or replacing an aging air gap component.
- Inlet: 1/4-inch OD; Outlet: 3/8-inch OD
- Includes mounting bracket, clamps, screws
- Maximum flow: 1 GPM; standpipe-ready
Dual Air Gap for Water Softener and RO (AG130-001)
The Gap-Cap air gap combines a 1/2-inch OD inlet for typical plumbing and a 3/8-inch inlet port to support RO lines. It can accommodate 5/8-inch tubing, 1/4-inch tubing, and standard RO adapters. The unit is designed for direct insertion into 1-1/2-inch and 2-inch standpipes and includes splash guards to minimize splashback. With a maximum design flow around 7–8 GPM and an optimum range of 4–5 GPM, it suits high-demand setups like combined water softeners and RO systems in larger homes.
- Inlets: 1/2-inch OD and 3/8-inch OD; supports 5/8-inch and 1/4-inch tubing
- Standpipe compatibility: 1-1/2-inch and 2-inch; splash guards
- Maximum flow: up to 7–8 GPM; recommended 4–5 GPM
Everpure Wall-Mount Air Gap Adapter
Designed to accompany Everpure drinking water faucets linked to reverse osmosis systems, this wall-mount air gap adapter delivers a premium, dependable connection. Everpure products are known for consistent water quality and robust performance in both residential and commercial settings, making this adapter a stable choice for households already using Everpure filtration components or those seeking a commercial-grade compatibility option.
- Compatibility: Everpure faucets with RO systems
- Commercial-grade quality and reliability
- Specifically built for Everpure integration
Water Softener Air Gap for Washing Machine Box (AG140-001)
This air gap is designed for installation within a washing machine box and uses a 2-inch drainpipe. It features a 1/2-inch OD inlet and a 2-inch standpipe, with splash protection designed to minimize spillage during discharge events. It’s suitable for installations where a combined drain with a water softener or similar system feeds into a standard standpipe, ensuring a dry exterior and reliable drainage performance.
- Inlet: 1/2-inch OD; Standpipe: 2 inches
- Designed for recessed washing machine boxes
- Tested at 15 GPM; recommended operation around 7 GPM
Buying Guide: Key Considerations For Selecting A Wall Mount Air Gap
When choosing a wall mount air gap, several factors influence performance, safety, and long-term reliability. The following considerations help you pick a model that best fits your system, space, and maintenance preferences.
- System compatibility: Match inlet/outlet sizes to your tubing (usually 1/4″, 3/8″, 1/2″, 5/8″). Consider whether you need a dual-inlet design for RO and softener applications.
- Standpipe and drain compatibility: Ensure the unit fits your standpipe diameter (1-1/2″, 2″, or 1-?”). Confirm that the outlet can feed the standpipe without kinks or sharp bends.
- Flow capacity: RO air gaps often specify up to 1 GPM, while gap-capacitated designs for softeners or condensates may permit higher flow. Choose a model with a comfortable margin above your system’s typical flow.
- Splash protection: Look for splash guards or funnel designs to minimize water splashing outside the gap during discharge surges.
- Installation accessories: Brackets, clamps, mounting hardware, and adapters simplify mounting and reduce the risk of leaks.
- Material and durability: Corrosion-resistant materials extend life in moist kitchen and utility environments.
- Brand and warranty: Reputable brands with good warranties provide reliability and easier replacement parts.
- Maintenance: Consider ease of cleaning and accessibility for occasional inspections or replacements.
Practical considerations include whether you want a single-application unit (RO-only) or a dual-inlet design that covers RO and water softener needs. If your space is tight or you have a recessed cabinet or box, units designed for wall mounting and standpipe compatibility are particularly advantageous. For commercial or high-usage settings, a higher flow capacity model with splash protection can reduce the risk of overflow and splash-related damage.
In sum, selecting the right wall mount air gap depends on your tubing sizes, standpipe diameter, and whether you need a dual-inlet configuration. The options above cover common residential RO installations, water softeners, and condensate drainage in a range of flow capacities. Evaluate the installation space, the components you already own, and your preferred maintenance approach to determine the best match.