Westbrass Plastic Air Gap 2 Pack Polished Chrome
4.6Editor score
Two units included in pack
Polished chrome finish
Standard air gap cap design
In this guide
A dishwasher air gap is a essential plumbing component that prevents contaminated wastewater from flowing back into your clean dishes. Installing the right unit ensures hygiene, meets local plumbing codes, and protects your kitchen from unpleasant odors and potential health risks associated with cross contamination in your drain lines.
We evaluated ten top rated air gap models based on build quality, design aesthetics, ease of installation, and customer feedback. Our analysis focuses on materials like solid brass and durable plastics, along with finish options that complement various kitchen styles. We also considered universal fitment to ensure compatibility with most standard dishwasher setups.
Each pick in this list highlights specific strengths such as corrosion resistance, sleek finishes, or budget friendly pricing. You will find detailed breakdowns of features, pros, and cons to help you choose the perfect fit for your home. Note that product availability and pricing may change over time, so verify details before purchasing.
Top 3 Picks for Best Air Gap for Dishwasher
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
Dishwasher Air Gap Cover Solid Brass Brushed Nickel
4.7Editor score
Premium brass construction
Elegant brushed nickel finish
Curved top design
Top 10 Best Air Gap for Dishwasher in 2026 Compared
This side by side comparison reviews all ten selected air gap models to help you understand their unique features and specifications at a glance.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Stainless Steel Air Gap
Solid brass cover
ABS plastic body
Corrosion resistant
Universal fit
4.8Editor score
Editor's Choice
Silicone Splash Guard 2 Pack
Food grade silicone
Grey or black color
Four degree slope
Universal accessory fit
4.3Editor score
Best Premium
Brass Brushed Nickel Cap
High quality brass
Curved top design
One point eight inch diameter
Flush installation
4.7Editor score
Westbrass Chrome 2 Pack
Polished chrome finish
Plastic body included
Two units in box
Standard air gap
4.6Editor score
Solid Brass Chrome Cap Kit
ABS plastic body
Solid brass cap
Multiple color options
Includes escutcheon
4.6Editor score
Brass Brushed Nickel Skirted
Skirted design
Solid brass core
Stain resistant surface
Universal standard size
4.8Editor score
Brass Matte Black Skirted
Matte black finish
Solid brass construction
Eight color options
Standard cap size
4.7Editor score
Prime Line Stamped Steel
Stamped steel build
Chrome plated finish
Push on installation
Single pack
4.5Editor score
KRAUS Matte Black Air Gap
Solid brass cover
Matte black finish
Corrosion resistant
Universal design
4.8Editor score
Brass Matte Black Cap Kit
Matte black finish
Brass cap body
Curved top design
Includes escutcheon
4.7Editor score
1. KRAUS Stainless Steel Air Gap – Best Overall
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel
Solid brass cover
ABS plastic body
Nine inch height
One point seven eight diameter
This KRAUS model stands out as a top choice for homeowners seeking reliability and style. With a high rating, it offers a solid brass cover combined with a durable ABS body to ensure long lasting performance in demanding kitchen environments.
Pros
- Superior durability with brass
- Premium corrosion resistant finish
- Fits all dishwasher types
- Clean flush installation look
- One year warranty included
Cons
- Requires specific hole size
- Higher price point
We may earn a commission when you buy through this link, at no additional cost to you.
The stainless steel finish is designed to resist corrosion and rust over time, keeping your sink area looking pristine. Its universal design ensures compatibility with virtually all dishwashers, making installation straightforward for most standard setups without needing custom modifications.
While the price is higher than basic plastic options, the build quality justifies the investment. The only minor tradeoff is the need for a pre drilled hole of specific dimensions, which is standard for most installations but worth verifying before purchase.
Ideal for those prioritizing hygiene and aesthetics, this unit effectively prevents wastewater backup. It is a reliable solution for anyone looking to upgrade their kitchen plumbing with a high quality air gap that meets code requirements.
Premium Material Quality
The solid brass cover provides superior strength compared to standard plastic caps, ensuring it withstands daily use without degrading.
Code Compliance Assurance
This air gap meets plumbing code requirements in many states, offering peace of mind that your installation is legal and safe.
We may earn a commission when you buy through this link, at no additional cost to you.
2. Silicone Splash Guard – Best Accessory
Silicone Splash Guard 2 Pack
Food grade silicone
Two color options
Five point one two inch length
Four degree slope design
This accessory is perfect for protecting your countertop from water drips coming from your air gap. Made from food grade silicone, it is safe, odorless, and durable enough to handle frequent cleaning without losing its shape or color.
Pros
- Prevents water splashing
- Easy to clean material
- Adds aesthetic touch
- Fits most air gaps
- Affordable two pack
Cons
- Not a full replacement
- Requires existing air gap
We may earn a commission when you buy through this link, at no additional cost to you.
The two pack allows you to have a spare or choose between grey and black to match your sink decor. Its four degree slope efficiently directs water into the sink, reducing mess and keeping your kitchen workspace dry and tidy.
While it does not replace the air gap itself, it complements existing setups by managing overflow. The main limitation is that it only works if you already have a functional air gap installed, so it is an add-on rather than a primary solution.
Homeowners who want to minimize wiping down counters after dishwashing will find this helpful. It is a cost effective way to improve kitchen hygiene and aesthetics with minimal installation effort.
Splash Protection
The splash guard catches drips before they spread, keeping your countertop dry and reducing cleaning time significantly.
Material Safety
Made from non toxic silicone, this accessory is safe for use in food preparation areas without any chemical concerns.
We may earn a commission when you buy through this link, at no additional cost to you.
3. Brushed Nickel Brass Cap – Premium Design
Dishwasher Air Gap Cover Solid Brass Brushed Nickel
High quality brass cap
Durable ABS body
One point eight inch diameter
Curved top design
This premium cap offers a sophisticated look with its brushed nickel finish and high quality brass construction. It is designed to replace worn out or unattractive caps while ensuring the underlying plumbing remains secure and functional.
Pros
- Elegant brushed nickel finish
- Prevents water vapor buildup
- Includes escutcheon cover
- Universal fitment
- Easy installation process
Cons
- Only cap replacement
- Verify existing body condition
We may earn a commission when you buy through this link, at no additional cost to you.
The curved top design is particularly effective at preventing water vapor accumulation, which can cause paint peeling around the sink area. Its universal fit makes it compatible with most standard air gap bodies found in typical kitchen sink installations.
The main consideration is that this is a replacement kit for the cap and escutcheon, not the full body. If your existing plastic body is damaged, you may need a complete kit rather than just this cover.
For those upgrading an older kitchen or replacing a tarnished cap, this is an excellent choice. It combines functionality with style to restore a clean look to your sink deck effortlessly.
Vapor Protection
The curved design reduces moisture buildup that often leads to paint damage or corrosion on the sink deck.
Style Upgrade
The brushed nickel finish complements modern faucets and hardware, elevating the overall appearance of your kitchen.
We may earn a commission when you buy through this link, at no additional cost to you.
4. Westbrass Chrome Air Gap – Value Pick
Westbrass Plastic Air Gap 2 Pack Polished Chrome
Two units included
Polished chrome cap
Plastic body included
Nine inch overall height
This two pack from Westbrass offers excellent value for households needing a spare or replacement unit. The polished chrome finish provides a classic look that matches many standard kitchen fixtures while maintaining functional performance.
Pros
- Two units for backup
- Polished chrome look
- Affordable price
- Standard sizing
- Complete kit
Cons
- Plastic body durability
- Lip remains exposed
We may earn a commission when you buy through this link, at no additional cost to you.
With a plastic body and chrome cap, it meets standard plumbing requirements for preventing backflow. The dimensions are typical for most sinks, making it a straightforward choice for DIY installations without requiring custom fitting.
The tradeoff is the exposed lip of the air gap body after installation, which might not look as clean as fully skirted models. However, this does not impact performance and keeps the price point very competitive for basic needs.
Perfect for budget conscious buyers or rental properties, this unit delivers reliable functionality. Having two in one pack ensures you have a ready backup if one ever needs replacement.
Budget Friendly
The two pack pricing makes this one of the most affordable options available without sacrificing basic functionality or safety.
Standard Function
It performs the essential task of preventing wastewater backup, meeting code requirements effectively for most homes.
We may earn a commission when you buy through this link, at no additional cost to you.
5. Solid Brass Chrome Kit – Reliable Replacement
Solid Brass Chrome Cap Kit
ABS plastic body
Solid brass cap
Seven color options
Includes escutcheon
This kit combines a durable brass cap with a plastic body to provide a cost effective replacement solution. The skirted design covers the entire air gap body for a cleaner look at the sink deck compared to exposed lip models.
Pros
- Durable brass cap
- Multiple color choices
- Easy installation
- Skirted design
- Universal fit
Cons
- Basic body material
- Check fit before buying
We may earn a commission when you buy through this link, at no additional cost to you.
With seven color options available, you can match your existing hardware precisely. The brass cap ensures corrosion resistance where it matters most, while the plastic body maintains structural integrity for daily plumbing use.
The main limitation is that the body is not brass, which is a tradeoff for the price point. However, the cap is where aesthetics and wear are most visible, so this design balances quality and cost effectively.
Ideal for homeowners replacing a damaged or outdated air gap, this kit simplifies the process. It provides a complete solution that is easy to install and looks polished without requiring professional help.
Design Versatility
Available in seven colors, this kit ensures you can find a match for almost any kitchen sink or faucet finish.
Complete Kit
Includes both the cap and escutcheon, so you have everything needed for a full replacement without extra purchases.
We may earn a commission when you buy through this link, at no additional cost to you.
6. Skirted Brass Cover – Aesthetic Focus
Brass Brushed Nickel Skirted
Solid brass core
Skirted cap design
Stain resistant finish
One point eight diameter
This cover is designed specifically for those seeking a sleek look with a skirted design that hides the air gap tubing. The solid brass core ensures longevity and resistance to rust and stains common in sink areas.
Pros
- Excellent corrosion resistance
- Covers tubing fully
- Easy cleaning
- Flush installation
- Removable for maintenance
Cons
- Cover only replacement
- Verify height first
We may earn a commission when you buy through this link, at no additional cost to you.
Its stain resistant surface makes routine cleaning simple, as water spots wipe off easily. The flush installation creates a seamless appearance on your countertop, enhancing the overall aesthetic of your kitchen setup.
Since this is a replacement cover, it works best when your existing air gap body is functional but outdated. Measuring the height and diameter of your current setup ensures a perfect fit without compatibility issues.
Recommended for homeowners who prioritize style alongside durability, this cover upgrades the look of standard units. It offers a practical way to refresh your kitchen sink area with minimal effort.
Clean Aesthetic
The skirted design ensures the entire tubing is hidden, creating a polished and professional look at your sink.
Maintenance Ease
The removable design allows for quick removal if you need to clear blockages or perform routine maintenance.
We may earn a commission when you buy through this link, at no additional cost to you.
7. Matte Black Skirted – Modern Style
Brass Matte Black Skirted
Matte black finish
Solid brass construction
Eight color options
Standard cap size
For modern kitchens with dark fixtures, this matte black cover offers a perfect visual match. The solid brass construction ensures it resists corrosion while providing a high-end feel to your sink area.
Pros
- Stylish matte finish
- Durable brass build
- Matches dark faucets
- Includes escutcheon
- Easy installation
Cons
- Cap only unit
- Measure before buying
We may earn a commission when you buy through this link, at no additional cost to you.
The skirted design covers the air gap tubing for a clean look that enhances the overall aesthetic. Its classic design complements various home decors, making it a versatile choice for many households.
Like other covers, this is a replacement part, so verify your existing body is in good condition. The eight color options give flexibility to choose the exact finish that suits your decor preferences.
Ideal for those looking to update their kitchen hardware to a sleek modern look, this cover provides both style and function. It is an easy upgrade that refreshes the sink deck without major changes.
Modern Finish
The matte black finish is on trend for modern kitchens, offering a sophisticated look that pairs well with contemporary faucets.
Durability
Built with solid brass, this cover stands up to daily use and resists corrosion for long-lasting performance in wet areas.
We may earn a commission when you buy through this link, at no additional cost to you.
8. Prime Line Steel Cover – Basic Option
Prime Line Stamped Steel
Stamped steel build
Chrome plated finish
Push on installation
Single pack
This basic cover is designed for simple functionality without extra features. Made from stamped steel with a chrome finish, it provides a durable and affordable solution for protecting your air gap vent.
Pros
- Very affordable
- Simple push on fit
- Fits most gaps
- Sturdy steel material
- Chrome finish
Cons
- Basic design
- May rust over time
We may earn a commission when you buy through this link, at no additional cost to you.
The push on installation makes it extremely easy to install without tools. It fits over most standard air gaps, offering a quick fix for those needing a replacement cover quickly.
While cost effective, the steel may be more prone to rust than brass or plastic options in very humid environments. It is best suited for short term use or budget focused projects where aesthetics are secondary.
Great for rental properties or quick repairs, this cover gets the job done. It ensures your dishwasher remains protected from backflow without adding unnecessary cost to your project.
Ease of Use
Installation is a simple push on process, requiring no screws or tools for a quick and secure fit on your air gap.
Value Pricing
One of the most affordable options available, this cover offers essential protection for those on a tight budget.
We may earn a commission when you buy through this link, at no additional cost to you.
9. KRAUS Matte Black Gap – Full Kit
KRAUS Matte Black Air Gap
Matte black finish
Solid brass cover
ABS plastic body
Universal design
KRAUS delivers a full air gap kit in a striking matte black finish that complements modern kitchen designs. The combination of a solid brass cover and durable ABS body ensures reliable performance and long term durability.
Pros
- Complete replacement kit
- Corrosion resistant
- One year warranty
- High quality build
- Sleek matte style
Cons
- Higher price
- Requires specific hole
We may earn a commission when you buy through this link, at no additional cost to you.
This unit prevents wastewater from backing up into your dishwasher, protecting your clean dishes effectively. It meets plumbing code requirements in many states, offering peace of mind and compliance with local regulations.
The finish is resistant to corrosion and rust, ensuring the matte look stays pristine over time. The only consideration is the requirement for a specific pre drilled hole size, which is standard but needs verification before installation.
For homeowners seeking a complete high quality kit with a modern look, this is an excellent investment. It balances style, durability, and functionality to meet the needs of even the most discerning users.
Full Protection
As a full kit rather than just a cover, this provides a complete solution for replacing old or damaged air gap units.
Code Compliance
Designed to meet standard plumbing codes, this air gap ensures your installation is safe and legal in many regions.
We may earn a commission when you buy through this link, at no additional cost to you.
10. Matte Black Brass Cap Kit – Complete Look
Brass Matte Black Cap Kit
Matte black finish
Brass cap body
Curved top design
Includes escutcheon
This kit features a high end matte black finish on a solid brass cap for a sophisticated look. The curved top design helps prevent water vapor buildup, reducing the risk of paint peeling and maintaining a flawless appearance.
Pros
- High end finish
- Prevents paint peeling
- Universal fit
- Includes escutcheon
- No special tools
Cons
- Requires existing body
- Check pipe diameters
We may earn a commission when you buy through this link, at no additional cost to you.
Universal fit ensures compatibility with most kitchen sinks and dishwashers. The included escutcheon covers the entire air gap body, providing a clean appearance that complements any home decor effectively.
Installation is straightforward with no special tools needed. Verify the pipe diameters of your existing unit to ensure a smooth process and proper fit.
Ideal for updating a kitchen with modern dark fixtures, this kit offers style and function. It is an effective way to refresh your sink area with minimal hassle while maintaining performance standards.
Finishing Touch
The matte black finish adds a refined touch to your kitchen, matching well with contemporary faucets and fixtures.
Complete Cover
Includes a matching escutcheon to cover the entire body, ensuring a neat look without exposed components.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best Air Gap for Dishwasher
Selecting the right air gap involves considering material quality, design style, and compatibility with your current plumbing setup.
Material Quality
The material of the air gap body and cap significantly impacts durability. Brass offers superior corrosion resistance compared to plastic or steel, especially in humid kitchen environments. Look for units with solid brass covers for longevity.
Choose brass or high quality ABS plastic for a balance of durability and cost.
Finish and Style
Your choice should match your existing faucet and sink hardware. Common finishes include polished chrome, brushed nickel, and matte black. Aesthetic consistency improves the overall look of your kitchen.
Select a finish that matches your other kitchen fixtures for a cohesive design.
Installation Compatibility
Check the hole size required for your sink. Most air gaps need a specific diameter hole, often around one and a half inches. Verify your sink deck before purchasing to avoid extra drilling work.
Confirm hole dimensions match your sink deck to ensure a smooth installation.
Code Requirements
Plumbing codes in many regions mandate air gaps for dishwashers. Ensure your chosen unit meets local standards to avoid inspection issues or legal concerns. Most reputable brands design products to comply.
Verify that the air gap meets your local plumbing code for safe compliance.
Full Unit vs. Cap Only
Decide if you need a full kit or just a replacement cover. If the existing body is damaged, a full unit is necessary. For cosmetic updates, a cap only kit is sufficient.
Purchase a full kit if the body is damaged, or a cap only for cosmetic changes.
Ease of Maintenance
Look for designs that allow easy cleaning of internal parts. Removable caps simplify blockage clearing and routine maintenance. Skirted designs also prevent dirt accumulation around the base.
Choose a removable design to simplify routine cleaning and blockage removal.
Warranty Coverage
A warranty indicates manufacturer confidence in product durability. Standard warranties often cover defects for at least one year. This protects you against premature wear or material failure.
Prioritize models with at least a one year warranty for protection against defects.
Brand Reputation
Established brands like KRAUS and Westbrass are known for reliable plumbing components. They often offer better customer support and quality control than generic alternatives. Research reviews for long term performance feedback.
Choose reputable brands known for quality plumbing hardware to ensure reliability.
How to Use and Care for Your Air Gap
Regularly inspect your air gap for signs of buildup or leaks. Remove the cap periodically to rinse out any debris that might obstruct flow and affect performance. This simple step ensures optimal functionality.
Clean the exterior with a damp cloth to prevent stains and maintain finish quality. Avoid harsh chemicals that could damage brass or plastic components over time. Gentle cleaning preserves the aesthetic.
If you notice water leaking from the top, check for clogs in the drain line. Often, a clog causes wastewater to back up and overflow. Clearing the drain line usually resolves this issue.
Frequently Asked Questions
Is an air gap required for my dishwasher?
Many local plumbing codes require an air gap to prevent backflow contamination. It is a safety device that ensures wastewater does not enter your clean dishes. Always check your local regulations before installation.
What is the difference between an air gap and a high loop?
An air gap physically separates the drain line from the sink drain, while a high loop elevates the hose. Air gaps provide more reliable protection and are often legally required where high loops are not.
Can I install an air gap myself?
Yes, installation is straightforward with basic tools. You drill a hole in the sink deck, insert the unit, and connect the hoses. Always follow manufacturer instructions to ensure a secure and code compliant fit.
How do I clean a clogged air gap?
Remove the cap and use a small brush or pipe cleaner to clear debris from the inside. You can also flush it with hot water to remove grease buildup. Regular cleaning prevents future clogs.
Why is water leaking from my air gap?
Water leakage usually indicates a clog in the drain line preventing proper flow. Clear the drain line to resolve the issue. If it persists, check for kinks or blockages further downstream.
Does the finish affect functionality?
No, the finish is purely aesthetic. The internal components function the same regardless of color. Choose a finish that matches your decor for visual consistency.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
We reviewed ten top air gap models to help you find the right balance of style and functionality. From budget friendly plastic units to premium brass kits, each option serves different needs and preferences.
Prioritize durability and code compliance when making your decision. A solid brass cap and universal fit offer the best long term value for most kitchens.
Always verify current availability and specifications before purchase. Products may change over time, so checking the latest details ensures you get the right fit for your home.