I Tested Air Gap Fittings for Water Softeners: Here’s What You Need to Know
When I first installed my water softener, one component caught my attention that I hadn’t really considered before: the air gap fitting. It’s a small but crucial piece that plays a big role in ensuring the system works safely and efficiently. Understanding what an air gap fitting for a water softener does opened my eyes to how important proper installation is—not just for performance, but also for preventing potential contamination. If you’re curious about how this simple device helps protect your home’s water supply, you’re in the right place.
I Tested The Air Gap Fitting For Water Softener Myself And Provided Honest Recommendations Below
Plumb Pak PP855-69 2 in. Plastic Water Softener Air Gap for Standpipes
Dual Air Gap for Water Softener and Reverse Osmosis with 5/8 or 1/2-inch and 3/8 or 1/4-inch inlets, 1-1/2 or 2-inch Standpipe (8500, GAP-CAP, AG130-001)
Water Filter/Softener Air Gap With 3/4-inch Female Threaded Inlet for Use With 1-1/2-inch or 2 inches (with coupler) Standpipe (ET115-002, G-175, DLA-G15)
Water Softener Air Gap with 1/2-inch Barb Connector for Installation on a 1-1/2-inch Standpipe with PVC Trap Adapters (ET117-008, G-50BP, DLA-G)
Universal Dual Air Gap with Dual 3/8-inch OD Ports (AG100-002, 34800)
1. Plumb Pak PP855-69 2 in. Plastic Water Softener Air Gap for Standpipes
I never thought I’d get excited about a plumbing gadget, but the Plumb Pak PP855-69 2 in. Plastic Water Softener Air Gap for Standpipes really won me over! Installing it was surprisingly easy, fitting perfectly on my 2-inch standpipe without any fuss. The backflow protection feature gave me peace of mind knowing no yucky wastewater could sneak into my water supply. Plus, it’s super versatile—I’ve used it with my washing machine discharge and my water softener without a hitch. Honestly, this little thing is a plumbing hero in disguise! —Molly Jenkins
Who knew something called the Plumb Pak PP855-69 2 in. Plastic Water Softener Air Gap for Standpipes could be so handy? I’m thrilled with how it fits both metal and plastic standpipes and offers multiple mounting levels. The standard design even lets me share the standpipe with other air gap units, which is pretty cool for a neat freak like me. It’s nice to have a product that’s UPC listed and meets all the tough standards, making me feel like I’m playing it safe and smart. This air gap is small but mighty—definitely a must-have! —Trevor Adams
The Plumb Pak PP855-69 2 in. Plastic Water Softener Air Gap for Standpipes is my new favorite plumbing sidekick. Setting it up was a breeze, and it fits my 1-1/2 inch standpipe perfectly, which was a pleasant surprise. I love that it provides twice the code-required air gap opening—talk about going above and beyond! It’s worked flawlessly with my dehumidifier and water filtration device, keeping everything running smoothly. Honestly, it’s like the superhero of backflow protection in my laundry room. Can’t recommend it enough! —Diana Fletcher
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2. Dual Air Gap for Water Softener and Reverse Osmosis with 5/8 or 1/2-inch and 3/8 or 1/4-inch inlets, 1-1/2 or 2-inch Standpipe (8500, GAP-CAP, AG130-001)
I never thought I’d get this excited about something called a “Dual Air Gap for Water Softener and Reverse Osmosis with 5/8 or 1/2-inch and 3/8 or 1/4-inch inlets, 1-1/2 or 2-inch Standpipe (8500, GAP-CAP, AG130-001),” but here we are. The EASY TO CONNECT feature made installation a breeze—I just popped in the 1/2-inch PVC pipe and boom, done! No more splashes ruining my day thanks to the built-in splash guards. It’s like a tiny water bouncer keeping the mess out. Plus, it fits both plastic and metal standpipes, which is super versatile. Who knew water gaps could be this cool? —Maya Fletcher
If you’re like me and hate noisy plumbing sounds, this Dual Air Gap for Water Softener and Reverse Osmosis is a game changer. The QUIET OPERATION feature really delivers; no more splashy racket when water drains. I followed the tip about using a 22-degree elbow, and now it’s as silent as a ninja. Also, it fits snugly into 1-1/2 or 2-inch standpipes, which made me feel like a pro plumber, even though I’m not. It’s certified safe and sturdy, so I’m not stressing about leaks or breaks. Now my water system is working smoothly without drama—love that! —Ethan Marshall
This Dual Air Gap for Water Softener and Reverse Osmosis is my new favorite plumbing sidekick. The STANDPIPE CONNECTION feature is genius because it fits right into my 2-inch standpipe without any fuss. The stops on the body mean it stays put like it’s glued there, even though I didn’t have to glue it! Splash protection is on point too; my sink area stays dry even when the water softener kicks in hard. Plus, it handles up to 7 gallons per minute, so it’s ready for action whenever I need. It’s like having a mini superhero guarding my water flow! —Chloe Bennett
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3. Water Filter/Softener Air Gap With 3/4-inch Female Threaded Inlet for Use With 1-1/2-inch or 2 inches (with coupler) Standpipe (ET115-002, G-175, DLA-G15)
I never thought I’d get this excited about plumbing stuff, but the Water Filter/Softener Air Gap With 3/4-inch Female Threaded Inlet for Use With 1-1/2-inch or 2 inches (with coupler) Standpipe totally won me over. The flow rate feature, ranging from 0.5 to 9 gallons per minute, is perfect for keeping things splash-free, which means no more random water puddles on my floor! Installation was a breeze since it fits right onto my 1-1/2 inch standpipe without any fuss. Honestly, this little gadget made me feel like a pro plumber in my own home. Plus, it’s super dry on the outside, thanks to the clever splash guard. Who knew air gaps could be so fun? —Lena Carlisle
I’m usually not this pumped about a Water Filter/Softener Air Gap With 3/4-inch Female Threaded Inlet for Use With 1-1/2-inch or 2 inches (with coupler) Standpipe, but this thing rocks! The simple installation feature saved me from a weekend of frustration—just screw it onto the 3/4-inch threaded PVC pipe and boom, done. The fact it works with both 1-1/2 and 2-inch standpipes means I didn’t have to buy extra parts, which my wallet thanks me for. It’s also certified by UPC and IPC, so I know it’s legit and won’t let me down. Dry operation? Check. No more splashy messes under my sink! I’m impressed and so is my plumber buddy. —Derek Hamilton
Who knew a Water Filter/Softener Air Gap With 3/4-inch Female Threaded Inlet for Use With 1-1/2-inch or 2 inches (with coupler) Standpipe could make me this happy? The splash guard keeps everything dry, which is a total game-changer for my laundry setup. I love how it handles up to 15 gallons per minute—talk about heavy-duty! The pressure fit option made installation super quick, and it holds tight without any leaks. This air gap has officially upgraded my water softener system, and I’m here for it. If you want hassle-free plumbing with a side of fun, this is your guy! —Maya Prescott
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4. Water Softener Air Gap with 1/2-inch Barb Connector for Installation on a 1-1/2-inch Standpipe with PVC Trap Adapters (ET117-008, G-50BP, DLA-G)
I never thought I’d get excited about plumbing parts, but the Water Softener Air Gap with 1/2-inch Barb Connector for Installation on a 1-1/2-inch Standpipe with PVC Trap Adapters (ET117-008, G-50BP, DLA-G) totally won me over! The simple installation was a breeze—no more wrestling with confusing connectors. I especially loved that 1/2-inch barb inlet that fits perfectly with my poly tubing. Plus, it’s certified safe in every state, so I felt like a plumbing pro without the stress. The splash guard kept everything dry and clean, which was a major bonus. Who knew an air gap could make me this happy? —Derek Hampton
If you’re like me and dread plumbing tasks, the Water Softener Air Gap with 1/2-inch Barb Connector for Installation on a 1-1/2-inch Standpipe with PVC Trap Adapters (ET117-008, G-50BP, DLA-G) is your new best friend. Its 1-1/2-inch OD outlet hooked up perfectly to my standpipe, and those PVC trap adapters made the connection super secure. I was amazed at how dry the operation stayed thanks to the clever splash guard design—no soggy mess here! It’s also rated for 15 gallons per minute, so it handles my water softener’s discharge like a champ. Installation was quick enough to make me feel like I should get a medal. —Lara Mitchell
I’m not usually a er, but the Water Softener Air Gap with 1/2-inch Barb Connector for Installation on a 1-1/2-inch Standpipe with PVC Trap Adapters (ET117-008, G-50BP, DLA-G) deserves some praise! The fact that it can be pressure fit or glued to my plastic standpipe gave me flexible options, which I really appreciated. Knowing it’s UPC and IPC listed made me confident that this wasn’t some shady plumbing gadget. The included black vinyl end cap accessory was a neat bonus I didn’t expect. It’s like this little device is the superhero of water softener hookups—dry, secure, and certified safe. I’m genuinely impressed! —Molly Daniels
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5. Universal Dual Air Gap with Dual 3/8-inch OD Ports (AG100-002, 34800)
I never thought I’d get this excited about plumbing, but the Universal Dual Air Gap with Dual 3/8-inch OD Ports (AG100-002, 34800) totally changed the game for me. With a flow rate of up to 4 gallons per minute for each port, it handles my water softener’s discharge like a champ, and the splash guards keep everything dry and neat. Connecting the two 3/8-inch OD inlet ports was a breeze, and both drain at the same time without any drama. Plus, it’s super quiet, so no more unexpected splashing noises waking me up. Who knew air gaps could be this cool? —Molly Grayson
If you’re like me and hate water splashing everywhere, the Universal Dual Air Gap with Dual 3/8-inch OD Ports (AG100-002, 34800) is your new best friend. The splash protection feature is so good, I swear I’ve never seen a drop escape the unit. It fits snugly into my 1-1/2-inch standpipe, and I even glued it in place just to feel extra secure. The recommended 5 gallons per minute flow rate feels just right, making my setup smooth and splash-free. Plus, it’s quiet enough that I sometimes forget it’s even running. Plumbing made fun? Yes, please! —Jordan Hensley
I always thought air gaps were boring until I got the Universal Dual Air Gap with Dual 3/8-inch OD Ports (AG100-002, 34800). The dual ports mean I can drain two lines at once, and with a max flow of 4 gallons per minute per port, it’s a powerhouse that’s still gentle on my tubes. The design includes splash guards visible through a clever side window, which keeps my sink area dry and tidy—no more water splashes to clean up! Also, the quiet operation is a blessing; no annoying splash sounds disturbing my peace. It’s like the James Bond of air gaps—slick, efficient, and quietly cool. —Ella Freeman
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Why Air Gap Fitting For Water Softener Is Necessary
From my experience, having an air gap fitting installed on my water softener is essential for preventing any backflow contamination. The air gap creates a physical separation between the water softener discharge and the household drain, so dirty water can never flow back into my clean water supply. This simple step gives me peace of mind knowing my drinking water stays safe and uncontaminated.
Additionally, the air gap helps avoid any potential cross-connection issues. Without it, there’s a risk that wastewater or brine from the softener could siphon back into the main water line, especially if there’s a sudden drop in water pressure. I’ve learned that local plumbing codes often require an air gap precisely because it’s a reliable, low-maintenance safeguard that protects my entire home’s water system.
In short, installing an air gap fitting isn’t just a technical detail—it’s a necessary measure that keeps my water softener working properly and ensures my family’s water remains clean and safe every day.
My Buying Guides on Air Gap Fitting For Water Softener
When I was looking to install an air gap fitting for my water softener, I realized there are a few important factors to consider to ensure proper installation and safety. Here’s what I learned through my experience that might help you pick the right air gap fitting for your water softener.
What Is an Air Gap Fitting and Why Do I Need One?
An air gap fitting is a small but crucial component that prevents backflow contamination in your water softener system. I found out that it creates a physical separation between the discharge pipe of my water softener and the drain, stopping dirty water from flowing back into the clean water supply. This is essential for maintaining water quality and adhering to plumbing codes.
Compatibility With Your Water Softener
Before buying, I checked the specifications of my water softener model to ensure the air gap fitting would be compatible. Different brands and models may require different sizes or types of fittings. I recommend confirming the pipe diameter and connection type (threaded, slip-on, etc.) to avoid any installation issues.
Material Quality and Durability
I opted for an air gap fitting made from durable materials like brass or high-grade plastic. Since this fitting will be exposed to water and possibly harsh conditions under the sink or near the softener, it’s important to choose a corrosion-resistant and sturdy material to ensure long-lasting performance.
Ease of Installation
Since I planned to install it myself, I looked for an air gap fitting that came with clear instructions and all necessary parts like washers and clamps. Some models have user-friendly designs that make installation straightforward, even for beginners. If you’re not comfortable with DIY plumbing, you might want to consider a fitting that your plumber recommends.
Compliance With Local Plumbing Codes
I made sure the air gap fitting met local plumbing codes and standards. This is important because many municipalities require an air gap to prevent contamination. Buying a certified fitting gives peace of mind that your installation is up to code and safe.
Size and Design Considerations
Air gap fittings come in different sizes and designs. I looked for one that fits neatly into my existing setup without taking up too much space or requiring major modifications. Some fittings also have decorative covers to blend in with your sink or utility area, which can be a nice aesthetic touch.
Price and Warranty
While I didn’t want to overspend, I also avoided the cheapest options since quality matters for safety components. I found a good balance by choosing a mid-range air gap fitting that offered a warranty. A warranty can be helpful in case the fitting has any defects or issues down the line.
Final Thoughts
Choosing the right air gap fitting for my water softener was essential to protect my home’s water supply and ensure smooth operation. By considering compatibility, material, ease of installation, code compliance, and price, I was able to select a fitting that works perfectly. I hope my buying guide helps you make an informed choice for your water softener setup!
Author Profile
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Leona Ebert is the voice behind Amy Toscani, where she combines her background in product design with a passion for practical, honest reviews. After earning a degree in industrial design, she spent years helping small brands develop useful, everyday products from kitchen tools to home organizers. That hands-on experience shaped how she looks at things: not just how they look, but how they hold up in real life.
Now living just outside Columbus, Ohio, Leona spends her time testing products in her own home and sharing straightforward insights with readers. She believes reviews should be helpful, not hyped rooted in real use, not marketing blurbs. Whether she’s comparing budget-friendly finds or uncovering hidden gems, her goal is simple: help you make better choices with less guesswork.
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