
40418 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $20.00 | Condition is New – Open box, 7 Robinair 40418 Solder Union 1/4 MFL X 1/400, FREE SHIPPING | 100.0% |
![]() | $35.00 | Condition is New – Open box, Lot Of 12 Robinair 40418 Solder Union 1/4 MFL X 1/4 OF Copper Tube ext., FREE SHIPPING | 100.0% |

The Robin Air 40418 Access Fitting Solder Union is a versatile and essential plumbing component designed for use in various applications. This solder union is part of Robin Air's extensive product line, which is renowned for its durability and reliability.
Measuring 1/4 inch in outside diameter (OD), this solder union is well-suited for use with pipes and tubing of similar dimensions. The union's primary function is to provide a secure and leak-free connection between two pipes or tubes, making it an indispensable tool for plumbers, HVAC technicians, and DIY enthusiasts alike.
The Robin Air 40418 is a solder union, meaning it utilizes the soldering process to create a strong and permanent bond between the connected pipes. The union's design includes a fitting on each end, allowing for quick and easy installation, and a central solder well that facilitates the soldering process.
The solder union's construction is robust and durable, featuring a brass body that resists corrosion and provides excellent heat conduction for efficient soldering. The union's threads are also nickel-plated to prevent galvanic corrosion and ensure a long-lasting, leak-free connection.
The Robin Air 40418 Access Fitting Solder Union is an ideal solution for various plumbing applications, including water, gas, and HVAC systems. Its compact size and versatile functionality make it a must-have tool for any professional or DIY plumbing project.
In summary, the Robin Air 40418 Access Fitting Solder Union is a high-quality, durable, and versatile component designed for creating secure and leak-free connections between pipes and tubing. Its 1/4 inch OD size, brass construction, and nickel-plated threads make it a reliable and efficient solution for various plumbing applications.
The Robin Air 40418 Access Fitting Solder Union 1/4 MFL Od is a plumbing accessory designed for use in soldering copper tubing. Here are some potential pros and cons of buying this product:
Pros:1. Durable Construction: The Robin Air Access Fitting is made of brass, which is known for its durability and resistance to corrosion. This makes it a suitable choice for long-term use in various plumbing applications.
2. Easy Installation: This product is designed with a solder union, which simplifies the installation process. It eliminates the need for brazing or welding, making it a convenient option for DIY plumbing projects.
3. Versatile: The 1/4 MFL Od size makes it a versatile accessory that can be used in various plumbing applications. It can be used for both hot and cold water lines, as well as for gas lines, depending on the application and the appropriate certification.
Cons:1. Limited Size Availability: This product is only available in a limited size, which may not be suitable for all plumbing applications. Plumbers or DIY enthusiasts who require larger or smaller sizes may need to look for alternative options.
2. Solder Union May Not Be Suitable for All Applications: While the solder union simplifies the installation process, it may not be suitable for all plumbing applications. For instance, high-pressure applications may require the use of threaded or flanged unions instead.
3. Requires Proper Use of Soldering Equipment: Proper use of soldering equipment is essential to ensure the successful installation of this product. Failure to follow the proper safety procedures or use the right soldering equipment may lead to damage or injury.
Conclusion:The Robin Air 40418 Access Fitting Solder Union 1/4 MFL Od is a durable and convenient plumbing accessory suitable for various applications. Its ease of installation and versatility make it a valuable addition to any plumbing toolkit. However, its limited size availability and the requirement for proper use of soldering equipment are important considerations that plumbers and DIY enthusiasts should keep in mind before making a purchase.
Recommendation:If you require a brass access fitting for plumbing applications and are looking for a convenient option with easy installation, the Robin Air 40418 Access Fitting Solder Union 1/4 MFL Od may be a suitable choice. However, it is essential to ensure that the size is appropriate for your application and that you have the necessary soldering equipment to ensure a successful installation. Additionally, it may be worth considering other options, such as threaded or flanged unions, depending on the specific plumbing requirements.
Details:
6 new in the package Robinair 40418 access fitting port - solder union type, 1/4 mfl x od. Brass copper.
specifications maxohvac:
- brand: Robinair
- mpn: 40418
- type: Access Port
- style: Access Fitting
- country of origin: United States
- california prop 65 warning: Not A Food Product Do Not Eat. Dental Damage And/or Digestive Disturbance May Occur If Consumed.
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: apple-pay
- other
- credit card: mastercard
- cash
- money order
shipping maxohvac:
- service: usps ground advantage
- transit: 9-13 days
- class: standard
- type: calculated
- carrier: usps
offer maxohvac:
- best offers: true
- in stock #: 2
- options: ship-to-home
- prices: $20.00–$35.00
- item condition: New – Open box
- availability: in stock
- started: december 13, 2025
- sold #: 9
returns maxohvac:
- policy: returns accepted
- method: money back
- paid by: seller
- time: 30 days
seller maxohvac:
- rating: 99.0%
- city: garden grove, california
- # reviews: 8469

