KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel
4.8Editor score
Solid brass cover for durability
Corrosion resistant finish
Universal design compatibility
In this guide
A dishwasher air gap is a critical plumbing component that prevents contaminated water from flowing back into your clean dishes. This simple yet essential device protects your kitchen health and ensures your appliance operates safely without risking cross-contamination during the wash cycle.
We compared ten highly rated air gap units and replacement covers based on durability, design, and ease of installation. Our analysis focuses on materials like brass and plastic, compatibility with standard sinks, and how well each option maintains a clean aesthetic on your countertop.
Each selection highlights specific benefits like corrosion resistance, universal fit, and stylish finishes to match your kitchen decor. Prices may vary over time so check current listings before purchasing to ensure you get the best value for your specific installation needs.
Top 3 Picks for Best Air Gap for Dishwasher
Dishwasher Air Gap Cover Solid Brass with Brushed Nickel
4.8Editor score
Skirted design covers body
Prevents water buildup
Easy slip on installation
Westbrass Plastic Air Gap 2 Pack Polished Chrome
4.6Editor score
Standard cap design
Plastic body included
Affordable two pack
Top 10 Best Air Gap for Dishwasher in 2026 Compared
This side-by-side comparison outlines the key specifications and features of each air gap unit and cover to help you identify the best fit for your kitchen sink and plumbing code requirements.
ProductsSpecificationsEditor scorePrice
Best Budget
KRAUS Dishwasher Air Gap KAG-1SFS
Height 9 inches
Cap diameter 1.8 in
Solid brass cover
Corrosion resistant
4.8Editor score
Editor's Choice
2-Pack Silicone Splash Guard Grey Black
Silicone material
Water ramp design
Catches drips
2 color choices
4.3Editor score
Editor's Choice
Dishwasher Air Gap Cover Brushed Nickel
Solid brass cap
ABS plastic body
1.8 inch diameter
Curved top design
4.7Editor score
Westbrass Plastic Air Gap 2 Pack
Plastic body
Chrome finish
2-1/4 cap height
9 inch overall
4.6Editor score
Air Gap Kit with Escutcheon Chrome
Includes flange
Solid brass cap
7 color options
Universal fit
4.6Editor score
Dishwasher Air Gap Cover Brushed Nickel
Solid brass core
Skirted design
2.28 inch height
Removable cover
4.8Editor score
Dishwasher Air Gap Cover Black Only
Solid brass
Matte black finish
Skirted design
8 color options
4.7Editor score
Prime-Line MP53045 Stamped Steel Cover
Stamped steel
Chrome plated
Single pack
Push on fit
4.5Editor score
KRAUS Dishwasher Air Gap Matte Black
Solid brass cover
ABS plastic body
Matte black finish
Universal design
4.8Editor score
Dishwasher Air Gap Cover Matte Black
Solid brass cap
ABS plastic body
1.8 inch diameter
Curved top
4.7Editor score
1. KRAUS Air Gap – Premium Durability and Style
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel
Corrosion resistant finish
Solid brass cover
Universal design fit
1 year warranty
The KRAUS air gap stands out for its premium Spot Free All-Brite Stainless Steel finish which resists corrosion and maintains a clean look. It prevents wastewater from backing into your dishwasher effectively ensuring your clean dishes stay safe from contamination during the wash cycle.
Pros
- Premium high-end look
- Prevents wastewater backflow
- Resistant to rust
- Complements any faucet
- Flush installation design
Cons
- Higher price point
- Requires specific hole size
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This unit includes a solid brass cover that offers superior durability compared to standard plastic options. The corrosion-resistant finish will not dull or fade over time making it a reliable choice for kitchens with hard water or high humidity conditions.
While it requires a pre-drilled hole of 1 1/2 inches this is standard for many sinks. The universal design ensures it works with all dishwashers on the market giving you peace of mind regarding compatibility before you make your purchase.
This air gap is ideal for homeowners who want a high-end appearance without compromising on plumbing code compliance. It is a solid investment for those prioritizing both function and form in their kitchen sink setup.
Superior Durability with Brass
The solid brass cover ensures this unit lasts longer than typical plastic models and adds a touch of elegance to your countertop.
Reliable Backflow Prevention
Built to prevent wastewater from contaminating clean dishes this air gap meets code requirements in many states for safe dishwasher operation.
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2. Silicone Splash Guard – Practical Leak Protection
2-Pack Silicone Splash Guard Grey Black
100% food-grade silicone
5.12 inch size
Water ramp design
Grey and black colors
This silicone splash guard acts as a practical accessory for your existing air gap to catch drips and direct water into the sink. It measures 5.12 by 2.1 inches with an inner hole of 1.5 inches making it a snug fit for most standard air gap covers.
Pros
- Catches drips effectively
- Prevents wet mess
- Food-grade material
- Easy to clean
- Includes two colors
Cons
- Not an air gap unit
- Accessory rather than fix
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The 4-degree slope on the water ramp helps drain water efficiently to keep your countertop dry and clean. Made from 100% food-grade silicone it is safe odorless and more durable than other materials that might crack or degrade over time.
Although it does not replace the air gap itself it solves the common issue of water splashing all over your counter. This accessory reduces the need to wipe down surfaces frequently and adds a touch of elegance to your kitchen decor.
It is best suited for those who already have an air gap but need to manage overflow or splashing issues. This affordable solution allows you to choose between grey or black to match your sink or countertop aesthetic easily.
Efficient Water Drainage
The angled ramp design ensures water flows into the sink instead of pooling on your counter top around the sink area.
Stylish and Safe Material
Food-grade silicone ensures safety for your kitchen environment while the timeless colors blend seamlessly with your existing home décor.
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3. Brushed Nickel Cover – Elegant and Efficient
Dishwasher Air Gap Cover Brushed Nickel
Solid brass cap
Brushed nickel finish
1.8 inch diameter
Curved top design
This replacement kit features a solid brass cap with a high-end brushed nickel finish that enhances the visual appeal of your kitchen. It prevents wastewater from backing up into your dishwasher to ensure your dishes remain clean and your environment is hygienic.
Pros
- Prevents water vapor buildup
- High-end brushed finish
- Flush installation
- Easy no tool setup
- Matches many kitchens
Cons
- Replacement cap only
- Check hole size first
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The curved top design on the cap helps prevent water vapor buildup which reduces the risk of paint peeling on your countertop. It includes a matching escutcheon that covers the entire air gap body for a clean and seamless look against the sink deck.
Installation is straightforward and requires no special tools allowing you to set it up quickly. The dimensions of 1.8 inches diameter make it suitable for most kitchen sinks and dishwashers on the market today.
It is an excellent choice for those looking to replace a worn out cap without changing the entire plumbing system. The durable ABS plastic body combined with the brass cap ensures exceptional corrosion resistance for long term use.
Stylish Visual Appeal
The brushed nickel finish and classic sensible design complement any home decor while maintaining a flawless appearance over time.
Hassle Free Installation
Designed for easy setup this kit allows you to install it securely to your sink deck with minimal effort or tools.
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4. Westbrass 2-Pack – Simple and Standard
Westbrass Plastic Air Gap 2 Pack
Plastic body included
Polished chrome cap
1-5/8 cap diameter
9 inch overall height
This two-pack from Westbrass offers a standard air gap solution with a polished chrome cap and a plastic body. It is designed to provide essential backflow prevention without adding unnecessary complexity to your plumbing installation.
Pros
- Affordable two pack
- Standard air gap cap
- Polished chrome finish
- Fits most models
Cons
- Plastic body material
- Lip may be exposed
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The cap has a diameter of 1-5/8 inches and a height of 2-1/4 inches which aligns with many common air gap requirements. The inlet and outlet sizes are standard to allow for proper water flow and ventilation during the dishwasher cycle.
While the plastic body is durable enough for regular use it may not offer the same premium feel as metal alternatives. Note that the cap leaves the lip of the air gap body exposed when installed which is a design choice to be aware of.
It is a practical choice for contractors or homeowners who need multiple units or spares at a lower cost. The polished chrome finish adds a touch of style while remaining functional for everyday kitchen needs.
Cost Effective Value
Getting two units in one pack provides excellent value for those covering multiple units or needing a spare for future use.
Standard Compatibility
With standard dimensions and fittings this unit is designed to fit over most air gaps for dishwashers without custom modifications.
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5. Chrome Kit with Escutcheon – Complete Look
Air Gap Kit with Escutcheon Chrome
Solid brass cap
Includes escutcheon
Polished chrome finish
Seven color options
This air gap kit comes with a solid brass cap and a matching escutcheon to provide a complete and cohesive look for your sink. The skirted cap covers the entire air gap body when installed flush to the deck for a clean aesthetic.
Pros
- Covers entire body
- Classic design styling
- Multiple color choices
- Easy to install
Cons
- Check existing hole size
- Replacement kit only
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It is designed to prevent wastewater from backing up into your dishwasher eliminating the risk of contaminating your clean dishes. The polished chrome finish is part of a range of seven color options to help you match your specific kitchen faucet or sink.
The combination of a durable ABS plastic body and solid brass cap ensures maximum durability against corrosion and rust. It offers years of reliable performance and represents good value for money given the quality materials used.
Ideal for those upgrading their kitchen look without replacing the entire plumbing line this kit simplifies the installation process. Its classic and sensible styling complements any home decor making it a versatile option for many users.
Customizable Color Match
Choose from seven color options to perfectly match your kitchen sink and kitchen faucet for a unified and professional appearance.
Durable Material Combo
Solid brass construction cap paired with ABS plastic body delivers resistance to corrosion and rust for long-lasting reliable performance.
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6. Brushed Nickel Cover – Skirted Elegance
Dishwasher Air Gap Cover Brushed Nickel
Solid brass core
Skirted design
2.28 inch height
Removable for cleaning
This dishwasher air gap cover prevents dirty water from flowing back into the dishwasher avoiding cross-contamination issues. It features a solid brass core with a brushed nickel finish that offers excellent corrosion resistance and prevents water stains from forming.
Pros
- Prevents cross-contamination
- Stain resistant surface
- Curved top design
- Universal size fit
- Matches kitchen ideally
Cons
- Check height before buying
- Replacement only
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The skirted design covers the entire air gap tubing providing a clean look that matches your kitchen ideally. The curved top prevents water accumulation which helps avoid paint peeling on your countertop after installation.
With a standard diameter of 1.80 inches and height of 2.28 inches it fits most air gap bodies of dishwashers on the market. The smooth surface allows for easy cleaning and the removable design simplifies routine maintenance and blockage clearing.
It is a top choice for homeowners seeking a high-end finish that is easy to maintain. Simply slip the cover onto the base for a secure fit that won't shift or fall off over time.
Long-Term Durability
Engineered for longevity this cover combines solid brass with a finish that does not leave water stains ensuring good durability.
Effortless Maintenance
The smooth stain-resistant surface allows easy cleaning and the removable design simplifies routine maintenance and blockage clearing.
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7. Matte Black Cover – Modern Minimalism
Dishwasher Air Gap Cover Black Only
Solid brass cap
Matte black finish
Skirted design
Eight color options
This matte black air gap cover provides a modern look with a solid brass construction that ensures maximum durability. It features a skirted design that covers the air gap body and installs flush to the sink deck or countertop.
Pros
- Classic design look
- Resistant to rust
- Fits most brands
- Value for money
Cons
- Matte may show water spots
- Check compatibility first
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The classic design and good looking styling complement any home decor making it suitable for various kitchen themes. It is resistant to corrosion and rust offering years of reliable performance that translates to better value for money.
With eight color options available you can choose the one that perfectly matches your kitchen sink and faucet. It fits most of brand's air gap bodies making it a universal solution for many households.
It is designed for hassle-free installation so you can update your kitchen hardware without professional help. Ensure you check the hole size before purchasing to guarantee a proper fit for your specific model.
Style and Function
Combines a classic design with good looking styling that complements any home while providing reliable corrosion resistance.
Universal Fit
Standard size fits most of brand's air gap bodies and choosing from eight color options to match your decor.
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8. Prime-Line Cover – Basic and Functional
Prime-Line MP53045 Stamped Steel Cover
Stamped steel
Chrome plated finish
Single pack
Push on install
This Prime-Line cover is constructed from stamped steel with a chrome plated finish to provide a durable yet affordable solution. It is designed to fit over most air gaps for dishwashers and serves as a replacement vent cover.
Pros
- Simple push on install
- Chrome plated finish
- Fits most air gaps
- Affordable option
Cons
- Only one pack
- Basic material
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The installation is an easy push on process over the air gap of your dishwasher meaning no tools are required. It allows air or water to vent from your dishwasher effectively during the wash cycle.
While it is a basic option compared to more premium kits it fulfills the essential function of covering the air gap. The single pack contains one air gap cover making it convenient for single unit replacements.
It is best for those who need a quick and simple fix without extra features. Ensure your air gap matches the standard dimensions to avoid any fit issues during installation.
Simple Installation
Designed for easy push on installation over the air gap of your dishwasher without the need for tools or adjustments.
Basic Chrome Finish
Constructed from stamped steel with a chrome plated finish to offer a functional and affordable look for your sink.
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9. KRAUS Matte Black – Sleek and Refined
KRAUS Dishwasher Air Gap Matte Black
Solid brass cover
Matte black finish
Universal design fit
1 year warranty
This KRAUS unit combines a durable ABS plastic body with a solid brass cover to deliver a high-end appearance in matte black. It prevents wastewater from backing up into your dishwasher eliminating the risk of contaminating your clean dishes.
Pros
- High-end appearance
- Corrosion resistant
- Prevents wastewater backflow
- Clean flush look
- Satisfaction guaranteed
Cons
- Requires specific hole
- Higher cost
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The premium corrosion-resistant finish will not dull or fade over time which is vital for maintaining a pristine kitchen look. It features a universal design compatible with all dishwashers on the market ensuring broad usability.
Installation results in a clean look as the cap covers the entire air gap body and installs flush to the sink deck. A one-year warranty ensures satisfaction with best-in-industry customer support that puts you first.
It is perfect for homeowners who want a sophisticated look that stands out in modern kitchens. While it requires a pre-drilled hole of 1 1/2 inches this is standard for most installations.
Superior Material Quality
Solid brass cover offers superior durability and a high-end appearance that resists corrosion and rust effectively.
Code Compliance
Air gaps are required for dishwasher installations by plumbing codes in many states and this unit meets those standards.
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10. Matte Black Cover – Reliable Replacement
Dishwasher Air Gap Cover Matte Black
Solid brass cap
Matte black finish
1.8 inch diameter
Curved top design
This replacement kit is designed to prevent wastewater from backing up into your dishwasher effectively keeping your dishes clean. The air gap cap is made from high-quality brass while the body is crafted from durable ABS plastic for exceptional durability.
Pros
- Prevents backflow
- Elegant design
- Easy installation
- Universal fit
Cons
- Replacement kit only
- Check pipe sizes
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The high-end matte black finish enhances the visual appeal of your kitchen with a curved top design that prevents water vapor buildup. This reduces the risk of paint peeling and maintains a flawless appearance over time on your countertop.
The two air gap pipes measure 7/8 inches and 5/8 inches in diameter making it suitable for most kitchen sinks and dishwashers. A matching escutcheon covers the entire air gap body and installs flush with the sink deck or countertop.
Enjoy a hassle-free installation process as it requires no special tools allowing you to install it securely with minimal effort. It is a sensible design that complements any home decor while providing essential protection.
Elegant Visuals
Feature high-end matte black finish that enhances the visual appeal of your kitchen while preventing water vapor buildup.
Universal Fit Details
The air gap cap has a diameter of 1.8 inches making it suitable for most kitchen sinks and dishwashers.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Choosing the right air gap involves considering material quality, design style, and compatibility with your existing plumbing setup.
Material Quality
Look for units made with solid brass caps and durable ABS plastic bodies to ensure long-lasting performance and resistance to corrosion. Premium materials like brass offer a high-end appearance and better durability compared to plastic-only options.
Prioritize brass or high-quality plastics to prevent rust and ensure the air gap lasts for years without needing replacement.
Design Style
Select a finish like brushed nickel, polished chrome, or matte black to match your existing kitchen faucet and decor style. A skirted design that covers the entire air gap body provides a cleaner look compared to exposed models.
Choose a style that complements your sink and countertop to maintain a cohesive and professional kitchen aesthetic.
Compatibility
Verify that the air gap unit fits the pre-drilled hole size in your sink typically around 1 1/2 inches in diameter. Ensure the pipe connections align with your dishwasher hose to avoid leaks or installation issues.
Check your sink's hole size and hose dimensions to ensure the unit fits without needing custom modifications or adapters.
Installation Type
Decide if you need a full kit with a body and cap or just a replacement cap depending on whether your existing unit is broken or just old. Most kits are designed for easy installation without special tools using a simple push-on mechanism.
Opt for a kit with escutcheon if you want to hide the air gap body for a more finished and professional appearance.
Code Requirements
Ensure the air gap meets local plumbing codes which often require a specific type of backflow prevention device for dishwashers. Many states mandate air gaps to prevent wastewater from contaminating clean dishes in your kitchen.
Always check local regulations to confirm that the unit you choose is compliant with required safety standards in your area.
Durability Features
Look for corrosion-resistant finishes that will not dull or fade over time especially in kitchens with hard water or high humidity. Features like a curved top design can help prevent water buildup and protect your countertop from peeling.
Choose units with proven corrosion resistance and durable coatings to ensure the finish remains pristine for years of use.
Price and Warranty
Compare prices across different options as some kits offer better value for money with included accessories like escutcheons or multiple colors. A warranty such as one-year satisfaction guarantees indicates the manufacturer stands behind their product quality.
Balance the cost with the included features and warranty to ensure you are getting a reliable product that fits your budget.
Color Options
Many modern kits offer multiple color choices ranging from chrome and black to stainless steel to match your specific faucet style. Having the option to choose allows you to update your kitchen look without replacing plumbing pipes.
Take advantage of available color options to find a match that perfectly coordinates with your current kitchen fixtures.
How to Use and Care for Your Air Gap for Dishwasher
After installation ensure that the air gap cap is securely in place and flush with your sink or countertop. Check periodically that the water drains freely without pooling on the top of the cap during or after the dishwasher cycle.
If you notice water leaking or pooling check for clogs in the lines connecting the dishwasher to the air gap and the air gap to the drain. You may need to clean the air gap cap or the connected hoses to restore proper function.
Clean the exterior of the air gap regularly with a soft cloth and mild detergent to maintain its finish and remove any hard water spots. Avoid harsh chemicals that might damage the corrosion-resistant coating and dull the appearance over time.
Frequently Asked Questions
What is an air gap for a dishwasher?
An air gap is a plumbing device installed on your countertop that prevents wastewater from flowing back into your dishwasher. It creates a physical separation between your dishwasher drain line and the household drain to ensure clean dishes stay free from contamination during the wash cycle.
Do I need an air gap for my dishwasher?
In many states and local areas plumbing codes require an air gap for dishwasher installations to prevent cross-contamination. Check your local regulations to confirm if your home requires one though it is often a good practice for ensuring safety and hygiene in your kitchen.
Can I hide the air gap in my sink?
Yes there are options to hide or replace the visible air gap with a more decorative cap or cover that fits into your sink. However you must ensure that the backflow prevention function remains intact to comply with plumbing codes.
How do I clean my dishwasher air gap?
To clean your air gap remove the cap and check for any debris or clogs in the opening. Flush it with water to clear out any buildup that might be causing water to back up onto your countertop during use.
Why is water coming out of my air gap?
Water coming out of the air gap usually indicates a blockage in the drain line where the dishwasher hose connects. This blockage causes the water to back up through the air gap which is designed to release pressure instead of forcing it back into the dishwasher.
What materials are best for an air gap?
Brass caps combined with ABS plastic bodies are considered best for durability and corrosion resistance. These materials prevent rust and maintain a clean look over time even in environments with hard water or high humidity.
Is an air gap easy to install?
Yes most air gap kits are designed for easy installation without requiring special tools or professional help. You typically just need to connect the hoses and push the cap onto the base to secure it in place on your sink deck.
How do I choose the right finish?
Select a finish that matches your kitchen faucet and other hardware such as chrome brushed nickel or matte black. This ensures a cohesive look and prevents the air gap from standing out awkwardly in your kitchen design.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
We reviewed ten top-rated air gap units and covers that offer reliable protection against wastewater backflow. The KRAUS premium models stand out for their durability while affordable options like the Westbrass two-pack provide practical value.
Prioritize materials like solid brass and finishes that resist corrosion to ensure your unit lasts for years. A skirted design can enhance the visual appeal of your kitchen while maintaining necessary plumbing code compliance.
Always verify current prices and compatibility before purchasing to ensure you select the right model for your specific sink and dishwasher. Investing in a quality air gap protects your kitchen from contamination and keeps your dishwasher running smoothly.