CheeMuii DOT air line fittings 1/4-inch unions with secure push-to-connect connections
CheeMuii DOT air line fittings 3/8-inch unions offering versatile, leak-resistant connections
CheeMuii DOT air line fittings 1/2-inch unions enabling strong, fast line repairs
CheeMuii DOT air line fittings quick-connect design simplifies installation tasks
CheeMuii DOT air line fittings brass and plastic construction withstands temperature variations
CheeMuii DOT air line fittings common uses include trucks, RVs, and workshops
CheeMuii DOT air line fittings 1/4-inch unions with secure push-to-connect connections
CheeMuii DOT air line fittings 3/8-inch unions offering versatile, leak-resistant connections
CheeMuii DOT air line fittings 1/2-inch unions enabling strong, fast line repairs
CheeMuii DOT air line fittings quick-connect design simplifies installation tasks
CheeMuii DOT air line fittings brass and plastic construction withstands temperature variations
CheeMuii DOT air line fittings common uses include trucks, RVs, and workshops

CheeMuii 30 PCS DOT Air Line Fittings Kit — 1/4 in, 3/8 in, 1/2 in Quick Connect Unions

All-in-one DOT air line fittings kit CheeMuii brings you a comprehensive 30-piece DOT air line fittings set...
Vendor: CheeMuii
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CheeMuii DOT air line fittings 1/4-inch unions with secure push-to-connect connections

CheeMuii 30 PCS DOT Air Line Fittings Kit — 1/4 in, 3/8 in, 1/2 in Quick Connect Unions

£58.56
CheeMuii DOT air line fittings 1/4-inch unions with secure push-to-connect connections
CheeMuii DOT air line fittings 3/8-inch unions offering versatile, leak-resistant connections
CheeMuii DOT air line fittings 1/2-inch unions enabling strong, fast line repairs
CheeMuii DOT air line fittings quick-connect design simplifies installation tasks
CheeMuii DOT air line fittings brass and plastic construction withstands temperature variations
CheeMuii DOT air line fittings common uses include trucks, RVs, and workshops

CheeMuii 30 PCS DOT Air Line Fittings Kit — 1/4 in, 3/8 in, 1/2 in Quick Connect Unions

£58.56
Description
Description
x

All-in-one DOT air line fittings kit

CheeMuii brings you a comprehensive 30-piece DOT air line fittings set that covers three common line sizes in a single, organized kit. With ten 1/4 inch unions, ten 3/8 inch unions, and ten 1/2 inch unions, this collection makes it easier to tackle a range of air line projects—whether you’re outfitting new equipment or repairing existing systems. The push-to-connect design enables quick, clean installations, helping you move from project to project with less downtime and more confidence.

What’s included

  • Ten 1/4 inch DOT straight unions
  • Ten 3/8 inch DOT straight unions
  • Ten 1/2 inch DOT straight unions

Quality, durability, and standards

  • Made from CA360 brass and high-strength plastic for reliable performance
  • DOT FMVSS 571.106 approved and SAE J1131 compliant, designed for air brake systems
  • Corrosion resistant, high-temperature ductility, and low permeability to extend service life

Performance and compatibility

These brass fittings are built to operate from vacuum up to 500 PSI and withstand temperatures from -30°F to +180°F. Always refer to the tubing manufacturer's pressure and temperature guidelines for the best results.

Ease of use and installability

The DOT quick connect design provides a fast, tool-free connection—just push to connect. This helps reduce installation time and simplifies field repairs or upgrades.

Versatile applications

  • Air suspension systems and copper tubing in airline brake layouts
  • Truck, RV, and mobile repair projects dealing with air line leaks
  • Industrial workshops and towing machine hose connections

Whether you’re maintaining an on-site shop setup or tackling a roadside repair, this kit offers a practical, ready-to-use solution built to support a variety of air line tasks without promising guarantees, while highlighting real-world benefits you may experience.

FAQ

Q: What is included in the CheeMuii DOT Air Line Fittings kit?

A: The kit includes 10x 1/4 inch, 10x 3/8 inch, and 10x 1/2 inch straight unions for quick-connect connections.

Q: What are the operating temperature and pressure ranges?

A: It supports vacuum to 500 PSI and a temperature range of -30°F to +180°F, per tubing manufacturer guidelines.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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