Westbrass Plastic Air Gap 2 Pack Polished Chrome D200P-CP-PK
4.6Editor score
Standard plastic body cap
Two pack value option
Polished chrome finish
In this guide
A dishwasher air gap is a critical plumbing component designed to prevent contaminated water from flowing back into your clean dishes. It acts as a physical barrier ensuring hygiene and compliance with local plumbing codes. Choosing the right model involves considering material quality, design aesthetics, and ease of installation for your specific sink setup.
We evaluated ten top-rated air gap units based on their construction durability, finish options, and user feedback regarding reliability. Each product was analyzed for its ability to prevent backflow efficiently while maintaining a sleek appearance on your countertop. Our comparison highlights key features that differentiate premium brass caps from standard plastic alternatives.
Each pick in this list showcases specific strengths such as corrosion resistance, universal fit compatibility, and stylish finish choices like matte black or brushed nickel. Keep in mind that prices and availability can change over time so verifying current details before purchase is always recommended. This guide aims to simplify your selection process with clear expert insights and detailed specifications.
Top 3 Picks for Best Air Gap for Dishwasher
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel KAG-1SFS
4.8Editor score
Solid brass cover finish
Universal design compatibility
Corrosion resistant finish
Dishwasher Air Gap Cover Solid Brass Dishwasher Overflow Vent Cap Replacement Kit Matte Black
4.7Editor score
Premium brass construction
Curved top design
Matte black finish
Top 10 Best Air Gap for Dishwasher in 2026 Compared
This side-by-side comparison presents all ten selected dishwasher air gap units with their key specifications and visual references to help you quickly identify the model that best matches your kitchen aesthetic and functional requirements without overwhelming technical details.
ProductsSpecificationsEditor scorePrice
Editor's Choice
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel KAG-1SFS
Overall height 9 inches
Solid brass cover included
Universal design compatible
Corrosion resistant finish
4.8Editor score
Editor's Choice
2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard
Silicone splash guard material
5.12 by 2.1 inches size
Grey and black colors
4 degree slope design
4.3Editor score
Best Premium
Dishwasher Air Gap Cover Solid Brass Dishwasher Overflow Vent Cap Replacement Kit Brushed Nickel
High quality brass cap
Brushed nickel finish
Universal fit perfect size
Curved top design
4.7Editor score
Westbrass Plastic Air Gap 2 Pack Polished Chrome D200P-CP-PK
Standard air gap cap
Plastic body included
1.56 inch diameter cap
Polished chrome finish
4.6Editor score
Dishwasher Air Gap Kits with Dishwasher Air Gap Cover and Matching Escutcheon Solid Brass Air Gap Cap Polished Chrome Finish
Universal air cap kit
Seven color options available
Solid brass construction cap
Skirted air gap design
4.6Editor score
Dishwasher Air Gap Cover for Kitchen Solid Brass Air Gap Cap with Skirted Design Dishwasher Overflow Vent Cap Replacement Only Brushed Nickel
Solid brass core
Skirted design aesthetic
Brushed nickel finish
Standard dimensions fit
4.8Editor score
Dishwasher Air Gap Cover Black only Skirted Replacement Black air gap dishwasher Solid Brass Matte Black Finish
Standard air gap cap
Eight color options
Matte black finish
Solid brass construction
4.7Editor score
Prime-Line MP53045 Dishwasher Air Gap Cover Stamped Steel Chrome Plated Finish Single Pack
Stamped steel construction
Chrome plated finish
Single pack inclusion
Easy push on install
4.5Editor score
KRAUS Dishwasher Air Gap in Matte Black KAG-1MB
Matte black finish
Solid brass cover
Universal design compatible
Corrosion resistant finish
4.8Editor score
Dishwasher Air Gap Cover Dishwasher Air Gap Cap for Kitchen Sink Solid Brass Dishwasher Overflow Vent Cap Replacement Kit Matte Black
Premium brass construction
Curved top design
Universal fit size
Matte black finish
4.7Editor score
1. KRAUS Air Gap – Best Overall Backflow Protection
KRAUS Dishwasher Air Gap in Spot Free All-Brite Stainless Steel KAG-1SFS
9 inch overall height
Solid brass cover
1.8 inch cap diameter
Corrosion resistant finish
This KRAUS air gap stands out as the top choice for homeowners seeking reliable backflow prevention with a premium aesthetic. It holds an impressive 4.8 rating from users who praise its durable ABS plastic body and solid brass cover combination.
Pros
- Premium brass construction ensures longevity
- Universal design fits all dishwashers
- High end stainless steel appearance
- Includes comprehensive installation instructions
- Resistant to rust and corrosion
Cons
- Slightly higher price point
- Requires precise hole drilling
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The unit is engineered to prevent wastewater from backing up into your dishwasher protecting your clean dishes from contamination. Its spot free all-brite stainless steel finish resists dulling and fading over time ensuring it maintains a high end look in your kitchen.
While the price is higher than basic plastic models the superior materials and lifetime reliability justify the investment for most users. The pre-drilled hole requirement of 1.5 inches means you should measure your sink deck carefully before installation.
This model is ideal for those who value both function and form in their kitchen fixtures. Its universal design compatibility ensures it works with any dishwasher brand making it a safe and effective choice for new or replacement installations.
Superior Material Durability
The solid brass cover offers high-end appearance and resistance to wear ensuring the unit lasts for years without degrading in appearance or function.
Code Compliance Assurance
Air gaps are required by plumbing codes in many states and this model meets those standards to keep your home installation compliant and safe.
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2. Silicone Splash Guard – Best Leak Protection Accessory
2-Pack Dishwasher Air Gap Cover Water Ramp Silicone Splash Guard
Food grade silicone material
5.12 by 2.1 inch size
Grey and black colors
4 degree slope design
This silicone splash guard serves as an excellent accessory for managing minor leaks and drips around your existing air gap installation. It features a 4 degree slope that directs water flow into the sink reducing the need to wipe down your countertop.
Pros
- Catches drips effectively
- Easy to clean silicone
- Fits most air gap covers
- Includes two color options
- Prevents counter mess
Cons
- Accessory only not full gap
- Not a plumbing replacement
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Made from 100 food grade silicone this accessory is safe odorless and durable. It measures 5.12 by 2.1 inches with an inner hole size of 1.5 inches allowing it to fit snugly around most air gap cover diameters.
While it does not replace the actual air gap mechanism it complements it by catching water that might otherwise splash onto your counter. This keeps your kitchen dry and clean without any complicated installation.
Ideal for homeowners who notice minor splashing during dishwasher cycles this guard adds elegance to your kitchen décor. Its timeless colors blend seamlessly with home décor making it a practical and stylish addition to your sink area.
Efficient Drainage Design
The 4 degree slope helps water drain better into the sink eliminating wet mess behind the sink area during dishwashing cycles.
Versatile Color Choices
Choose from grey or black colors to match your specific kitchen décor ensuring the accessory enhances rather than clashes with your sink setup.
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3. Brushed Nickel Cap – Best Aesthetic Upgrade
Dishwasher Air Gap Cover Solid Brass Dishwasher Overflow Vent Cap Replacement Kit Brushed Nickel
High quality brass cap
Brushed nickel finish
1.8 inch cap diameter
Curved top design
This air gap replacement kit delivers an elegant brushed nickel finish that enhances the visual appeal of your kitchen sink area. It is designed to prevent wastewater from backing up while keeping your kitchen hygienic and stylish.
Pros
- Elegant brushed nickel finish
- Skirted cap covers entire body
- Prevents paint peeling risk
- Universal fit for most sinks
- Durable ABS plastic body
Cons
- Replacement only not full kit
- Check height before buying
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The cap is made from high quality brass paired with a durable ABS plastic body ensuring exceptional durability and corrosion resistance. Its curved top design prevents water vapor buildup reducing the risk of paint peeling over time.
With a cap diameter of 1.8 inches and matching escutcheon it covers the entire air gap body for a clean look. The classic design complements any home decor while maintaining universal fit compatibility with most kitchen sinks.
Homeowners looking to upgrade an old air gap cap will find this kit easy to install without special tools. It quickly and securely fits your sink deck offering a hassle-free setup with minimal effort required for replacement.
Premium Finish Quality
The high-end brushed nickel finish ensures the cap not only enhances visual appeal but also resists corrosion to maintain a flawless appearance.
Efficient Backflow Prevention
Designed to prevent wastewater backing up this kit keeps your dishes clean ensuring a hygienic kitchen environment without compromising on style.
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4. Westbrass Plastic Air Gap – Best Value Pack
Westbrass Plastic Air Gap 2 Pack Polished Chrome D200P-CP-PK
Standard air gap cap
1.56 inch diameter
9 inch overall height
Chrome finish option
This Westbrass option provides excellent value as a two-pack standard air gap unit suitable for multiple installations or as a spare. It holds a solid 4.6 rating indicating reliable performance for everyday plumbing needs.
Pros
- Two pack for multiple homes
- Standard fit dimensions
- Polished chrome finish
- Easy to install setup
- Affordable budget price
Cons
- Plastic body may wear faster
- Cap leaves lip exposed
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The unit includes a standard air gap cap with a plastic body designed for functionality. It features a 1.56 inch cap diameter and 9 inch overall height to fit standard sink deck requirements.
The polished chrome finish offers a clean look though the cap leaves the lip of the air gap body exposed when installed. This is a functional choice for those prioritizing utility over a seamless aesthetic.
For homeowners on a budget or contractors needing reliable spare parts this two pack is a sensible investment. It delivers consistent performance without premium finishes making it a practical solution for standard dishwasher installations.
Cost Effective Packaging
Getting two units in one pack saves money for multiple projects and ensures you have a spare ready for future replacement needs.
Standard Compatibility
With standard dimensions this air gap fits most common plumbing setups making it a safe choice for generic installations without special requirements.
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5. Polished Chrome Kit – Best Color Variety
Dishwasher Air Gap Kits with Dishwasher Air Gap Cover and Matching Escutcheon Solid Brass Air Gap Cap Polished Chrome Finish
Seven color options
Solid brass cap
Skirted design
Includes escutcheon
This kit offers a unique advantage with seven color options to perfectly match your kitchen sink and faucet. It is designed to prevent wastewater backing up eliminating the risk of contaminating your clean dishes.
Pros
- Seven color choices available
- Includes matching escutcheon
- Solid brass durability
- Skirted clean look
- Universal air cap kit
Cons
- Check color availability
- Standard plastic body
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The air gap cap features a solid brass construction for maximum durability and resistance to corrosion. It comes with a skirted design and matching escutcheon to cover the entire body for a clean look.
While the body is plastic the cap is made of brass ensuring long service life and value for money. The polished chrome finish is one of several choices available to complement your home decor.
Ideal for those seeking a customizable solution this unit is easy to install with a hassle-free setup. It provides reliable performance and style allowing you to choose the color that best fits your kitchen aesthetic.
Customizable Finishes
Choose from seven color options to ensure the air gap cap matches your sink and faucet perfectly for a cohesive kitchen look.
Complete Installation Kit
Includes a skirted cap and matching escutcheon that cover the entire air gap body for a seamless flush installation on your countertop.
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6. Brushed Nickel Cap – Best Skirted Design
Dishwasher Air Gap Cover for Kitchen Solid Brass Air Gap Cap with Skirted Design Dishwasher Overflow Vent Cap Replacement Only Brushed Nickel
Solid brass core
1.8 inch diameter
Skirted design
Brushed nickel finish
This air gap cover effectively prevents dirty water from flowing back into the dishwasher ensuring a clean and dry kitchen environment. It holds an impressive 4.8 rating from users who appreciate its solid brass durability.
Pros
- Prevents cross-contamination
- Excellent corrosion resistance
- Curved top prevents water accumulation
- Flush clean look
- Stain-resistant surface
Cons
- Replacement only not full gap
- Verify height before purchase
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The cover combines a solid brass core with a brushed nickel finish that resists rust and leaves no water stains. Its skirted design covers the entire air gap tubing for a seamless aesthetic match.
With standard dimensions of 1.80 inch diameter and 2.28 inch height it fits most air gap bodies. The curved top design prevents water accumulation which helps avoid paint peeling and maintains appearance.
Homeowners looking for a replacement cap should check existing hole height before buying. The removable design simplifies routine maintenance making it easy to clean and clear blockages as needed.
Solid Brass Longevity
The solid brass core ensures excellent corrosion resistance and rust prevention providing a durable solution that lasts longer than plastic alternatives.
Aesthetic Skirted Design
This design covers the entire tubing and installs flush with the countertop offering a clean look that matches your kitchen ideally.
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7. Matte Black Cap – Best Matte Finish
Dishwasher Air Gap Cover Black only Skirted Replacement Black air gap dishwasher Solid Brass Matte Black Finish
Standard air gap cap
Matte black finish
Solid brass construction
Skirted design
This matte black air gap cap offers a classic design with a skirted look that complements any home style. It is built to last with a solid brass construction resistant to corrosion and rust.
Pros
- Eight color options available
- Matte black aesthetic
- Solid brass durability
- Skirted cap look
- Easy installation
Cons
- Replacement only not full gap
- Check color stock
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The unit is a replacement cap only fitting most brands air gap bodies. It features a matte black finish to choose from eight color options ensuring you find the perfect match for your kitchen.
Its skirted design with matching escutcheon covers the entire air gap body for a clean look. Installation is hassle-free requiring no special tools so you can upgrade your sink fixture quickly.
Ideal for those upgrading an existing unit to a modern look this cap delivers reliable performance and aesthetic appeal. Choose the color that best matches your sink and faucet for a cohesive appearance.
Matte Black Appeal
The matte black finish provides a modern look that complements dark fixtures and creates a sleek appearance in your kitchen sink area.
Color Variety Choice
Choose from eight color options to match your kitchen sink and kitchen faucet ensuring the cap blends seamlessly with your decor.
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8. Prime-Line Steel Cover – Best Metal Build
Prime-Line MP53045 Dishwasher Air Gap Cover Stamped Steel Chrome Plated Finish Single Pack
Stamped steel construction
Chrome plated finish
Single pack included
Easy push on install
This cover is constructed from stamped steel and comes in a chrome finish for a durable solution to vent air or water from your dishwasher. It is designed to fit over most air gaps for dishwashers.
Pros
- Constructed from stamped steel
- Chrome plated finish durable
- Easy push on installation
- Fits most air gaps
- Simple single pack
Cons
- Basic design aesthetics
- No color options
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The package contains one air gap cover that installs with an easy push on design over the air gap of your dishwasher. It offers a standard finish suitable for general kitchen use.
While it may lack premium finish variations it provides reliable function and longevity. The steel construction ensures it withstands the kitchen environment without degradation over time.
Ideal for basic replacements where function is the priority this cover is an affordable choice. It meets standard compatibility needs without requiring special tools or extensive plumbing expertise.
Steel Durability
Constructed from stamped steel this cover offers reliable longevity and resistance to wear in the demanding kitchen sink environment.
Easy Installation Design
This cover features an easy push on installation that lets you fit it over your dishwasher air gap quickly and securely.
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9. KRAUS Matte Black – Best Matte Premium
KRAUS Dishwasher Air Gap in Matte Black KAG-1MB
Matte black finish
Solid brass cover
Universal design
Corrosion resistant
This KRAUS unit prevents wastewater from backing up into your dishwasher eliminating contamination risk while delivering a high-end matte black appearance. It holds a 4.8 rating from satisfied users worldwide.
Pros
- Premium matte black finish
- Solid brass cover durability
- Universal design compatible
- Corrosion resistant finish
- High-end appearance
Cons
- Higher price than plastic
- Requires 1.5 inch hole
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The air gap kit includes a durable ABS plastic body and solid brass cover for a lifetime of reliable performance. The matte black finish is premium and rust-resistant ensuring it does not dull or fade over time.
Its universal design is compatible with all dishwashers on the market and meets code compliance in many states. The cap covers the entire body installing flush to the sink deck for a clean look.
Ideal for those seeking style and substance this model provides best-in-industry customer support and a one-year warranty. It is a robust choice for maintaining a stylish kitchen without compromising on functionality.
Matte Finish Quality
The premium corrosion-resistant finish will not dull or fade over time ensuring your kitchen maintains a sleek matte black appearance.
Universal Compatibility
Compatible with all dishwashers on the market this model offers flexibility and ensures it fits your existing kitchen plumbing setup.
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10. Premium Matte Kit – Best Upgrade Kit
Dishwasher Air Gap Cover Dishwasher Air Gap Cap for Kitchen Sink Solid Brass Dishwasher Overflow Vent Cap Replacement Kit Matte Black
Premium brass construction
Curved top design
1.8 inch cap diameter
Matte black finish
This air gap kit is designed to prevent wastewater from backing up keeping your dishes clean and hygienic. It features a high-end matte black finish that enhances visual appeal and durability.
Pros
- High-end matte black finish
- Premium brass construction
- Prevents paint peeling
- Classic sensible design
- Hassle-free installation
Cons
- Replacement cap only
- Check pipe diameter
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The cap is made from high-quality brass while the body is crafted from durable ABS plastic ensuring exceptional durability and corrosion resistance. A curved top design prevents water vapor buildup reducing the risk of paint peeling.
With a cap diameter of 1.8 inches it is suitable for most kitchen sinks and dishwashers. The skirted air gap cap along with matching escutcheon covers the entire body for a clean appearance.
Enjoy a hassle-free installation process with no special tools required. This model combines classic and sensible design with premium materials making it a perfect upgrade for any kitchen sink setup.
Premium Build Quality
The high-quality brass cap ensures exceptional durability and corrosion resistance providing a long-lasting upgrade for your kitchen plumbing.
Efficient Installation
Designed for easy setup it requires no special tools allowing you to quickly and securely install it to your sink deck.
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Buying Guide – How to Choose the Best Air Gap for Dishwasher
Selecting the right dishwasher air gap requires balancing material durability, finish options, and installation compatibility. This section breaks down the essential factors to consider.
Material Quality
Look for units with solid brass caps or covers for longevity and corrosion resistance. Plastic bodies are common but brass adds a premium touch and durability against wear.
Prioritize brass or high-grade ABS plastics to ensure the unit lasts for years without degrading.
Finish Options
Choose finishes that match your kitchen faucet and sink such as polished chrome brushed nickel or matte black. A good finish should resist rust and water stains.
Select a finish that complements your kitchen decor to maintain visual consistency.
Dimensions
Verify the cap diameter typically around 1.8 inches and overall height to ensure it fits your sink deck hole. Check pipe measurements as well for proper hose connection.
Measure existing holes and pipes before buying to avoid compatibility issues during installation.
Installation Ease
Many units offer hassle-free installation without special tools. Look for kits that include matching escutcheons to cover the gap body cleanly.
Opt for models with clear instructions and standard fittings for a quick DIY setup.
Code Compliance
Ensure the model meets local plumbing codes since air gaps are required in many states. This protects against backflow and keeps your home safe.
Verify product details state code compliance before purchase.
Design Features
Consider skirted caps that cover the entire air gap body for a seamless look. Curved tops can prevent water buildup and paint peeling.
Choose designs that enhance aesthetics while serving their functional purpose.
Warranty Support
Check for warranties such as one-year satisfaction guarantees for peace of mind. Strong customer support helps resolve any installation issues.
Look for brands that offer reliable after-sales support for your unit.
Price vs Value
Balance cost with features like brass construction and finish options. Higher prices often reflect better materials and durability.
Invest in quality for long-term savings and reliability.
How to Use and Care for Your Air Gap for Dishwasher
Install the air gap securely on your sink deck ensuring the hoses are connected to the dishwasher and drain. Check that there are no leaks around the base after installation.
Regularly clean the cap with mild soap and water to remove food residue or buildup. Wipe the finish gently to avoid scratching especially for chrome or matte finishes.
Inspect the unit annually for signs of rust or wear. If leaks occur tighten connections or check hoses for clogs ensuring smooth operation.
Frequently Asked Questions
What is a dishwasher air gap?
A dishwasher air gap is a plumbing fixture that prevents contaminated water from flowing back into your dishwasher. It acts as a physical barrier ensuring your clean dishes remain hygienic and safe.
Why do I need an air gap?
Plumbing codes in many states require air gaps to prevent backflow contamination. They protect your dishwasher and clean dishes from dirty sink water.
How do I install an air gap?
Install the unit on your sink deck hole then connect the hoses to your dishwasher and drain. Secure the cap and test for leaks before use.
What materials are best?
Solid brass caps with ABS plastic bodies offer the best durability and resistance to corrosion. Avoid units with cheap finishes that may rust quickly.
Can I replace just the cap?
Yes many models sell replacement caps that fit standard air gap bodies. Ensure dimensions match before purchasing a replacement part.
How do I clean it?
Clean with mild soap and water avoiding harsh abrasives. Regular maintenance prevents buildup and keeps the finish looking new.
What if it leaks?
Check hose connections and tighten them if necessary. Leaks often come from loose fittings or clogged hoses.
Do all dishwashers need one?
Most modern dishwashers require one due to local plumbing codes. Check your regulations to ensure compliance.
Final Thoughts on Choosing the Best Air Gap for Dishwasher
This guide highlights ten top-rated dishwasher air gap models ranging from budget plastic units to premium brass kits. Each offers unique benefits to suit different needs and kitchen aesthetics.
Prioritize material quality and finish options to ensure longevity and visual appeal. Brass caps and compliant designs provide the best balance of durability and style.
Always verify current prices and availability before purchasing. Choosing the right unit now ensures your dishwasher runs efficiently for years to come.