--- product_id: 29853746 title: "Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO)" brand: "air gap international" price: "€ 74.96" currency: EUR in_stock: true category: "Air Gap International" url: https://www.desertcart.pt/products/29853746-reverse-osmosis-filter-air-gap-with-counter-mount-cover-inlet store_origin: PT region: Portugal --- # 1 GPM max flow rate Fits 1/4" & 3/8" tubing UPC & IPC certified durability Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) **Brand:** air gap international **Price:** € 74.96 **Availability:** ✅ In Stock ## Summary > 💧 Keep your RO system flowing flawlessly with certified splash-free precision! ## Quick Answers - **What is this?** Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) by air gap international - **How much does it cost?** € 74.96 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/29853746-reverse-osmosis-filter-air-gap-with-counter-mount-cover-inlet) ## Best For - air gap international enthusiasts ## Why This Product - Trusted air gap international brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Splash-Free Flow Control:** Maintains a dry, splash-proof air gap at 1 gallon per minute for flawless operation. - • **Counter-Mount Convenience:** Designed for easy counter mounting ensuring optimal gravity flow and hassle-free maintenance. - • **Seamless Tubing Compatibility:** Effortlessly connects 1/4-inch inlet and 3/8-inch outlet tubing for streamlined installation. - • **Kink-Free Standpipe Connection:** Includes accessories to secure a direct, kink-free feed to your drain for peak performance. - • **Certified Strength & Reliability:** UPC and IPC listed with rigorous 40lb force testing for unmatched durability. ## Overview The AG110-004 Reverse Osmosis Filter Air Gap is a professionally certified plumbing accessory designed to prevent backflow and ensure splash-free drainage at a maximum flow rate of 1 GPM. It features easy connections for 1/4-inch and 3/8-inch tubing, is tested for strength to withstand 40lb force, and mounts conveniently on counters for optimal gravity flow. Ideal for millennial professionals seeking reliable, code-compliant RO system performance with effortless installation. ## Description The AG110-004 reverse osmosis (RO) filter air gap prevents backflow from the standpipe into the RO system. This unit is a gravity flow device and, as such, must have a standpipe feeding directly to a drain without kinks, loops, sagging, or bends. The GAP-A-RO air gap’s maximum flow rate is 1 gallon per minute (GPM). The maximum flow rate through an air gap is the flow rate at which water does not splash outside an air gap. The air gap is dry on the outside at the maximum flow rate. The AG110-004 air gap must be installed per the manufacturer’s instructions and mounted on a counter. This configuration lets the discharge water stream flow freely through the outlet piping. The inlet port connects to 1/4-inch OD tubing from the reverse osmosis unit, while the outlet connects to 3/8-inch OD tubing, which directly feeds to a standpipe through a suitable standpipe adapter. The AG110-004 air gap provides the following advantages: Super strong material to provide a secure connection, tested and listed for compliance with applicable plumbing codes, is easy to install, easy to use, and easy to maintain. ## Features - ❤ FLOW RATE: The GAP-A-RO air gap’s maximum flow rate is 1 gallon per minute (GPM). The maximum flow rate through an air gap is the flow rate at which water does not splash outside an air gap. The air gap is dry on the outside at the maximum flow rate. - ❤ EASY TO CONNECT: The AG110-004 air gap’s inlet connects to 1/4-inch OD tubing from the reverse osmosis unit. The outlet connects to 3/8-inch OD tubing, directly feeding a standpipe through a suitable standpipe adapter. - ❤ STANDPIPE CONNECTION: The AG110-004 air gap’s outlet connects to a 3/8-inch OD poly tubing which feeds directly to a standpipe without kinks or bends. Included accessories are provided with the air gap to secure its connection to the standpipe. - ❤ CERTIFICATION: The AG110-004 is UPC (Uniform Plumbing Code) and IPC (International Plumbing Code) listed. Also, all the products are tested for strength to ensure that every glue joint will withstand at least 40lb of force and not break. The testing is conducted for every manufactured lot to ensure consistent performance. - ❤ COMPATIBILITY: Our reverse osmosis air gaps such as the AG110-004 are not compatible with reverse osmosis faucets with air gap. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | AIR GAP INTERNATIONAL | | External Testing Certification | NSF | | Material | Plastic | | Material Type | Plastic | | UPC | 854628005400 | | Unit Count | 1 Count | ## Product Details - **Material:** Plastic - **External Testing Certification:** NSF - **Product Benefits:** Removes impurities and contaminants, improves water flow rate, and ensures easy installation, certified to meet NSF standards. - **Brand:** AIR GAP INTERNATIONAL - **UPC:** 854628005400 ## Images ![Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) - Image 1](https://m.media-amazon.com/images/I/51bvWFMe0xL.jpg) ![Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) - Image 2](https://m.media-amazon.com/images/I/71WSEeCVEyL.jpg) ![Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) - Image 3](https://m.media-amazon.com/images/I/71nRO45FL2L.jpg) ![Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) - Image 4](https://m.media-amazon.com/images/I/716PE7qkW0L.jpg) ![Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) - Image 5](https://m.media-amazon.com/images/I/71CYgeXkajL.jpg) ## Frequently Bought Together - Reverse Osmosis Filter Air Gap with Counter Mount Cover (Inlet fits 1/4-in OD poly tubing, Outlet fits 3/8-in OD poly tubing; AG110-004, KIT S-D, GAP-A-RO) - E-outstanding Quick Straight Connector 5PCS 1/4inch to 3/8inch OD Quick Straight Push Connector Water Tube Pipe Fitting Kit for RO Water Systems Purifiers Filters - Watts Premier Universal Dishwasher / Drain Line to Garbage Disposal Adapter for Reverse Osmosis Systems, Push-In Fitting & Barb, Hose Coupler, Marine Stainless Steel Hose Clamps, No Drilling Required --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/29853746-reverse-osmosis-filter-air-gap-with-counter-mount-cover-inlet](https://www.desertcart.pt/products/29853746-reverse-osmosis-filter-air-gap-with-counter-mount-cover-inlet) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-11-06*