Mastercool
0 ratings
Mastercool Low Side CO2 Coupler for R744 Systems, 84934-CO2, 1/4 SAE Connection
genuine image
Mastercool Low Side CO2 Coupler for R744 Systems, 84934-CO2, 1/4 SAE Connection
Mastercool’s CO2 couplers are specially designed for R744 systems, meeting SAE specifications for refrigerant containment, with reliable, self-locking construction and high pressure resistance.
Mastercool Low Side CO2 Coupler for R744 Systems, 84934-CO2, 1/4" SAE Connection
Item #: 84363482

Mastercool Low Side CO2 Coupler for R744 Systems, 84934-CO2, 1/4" SAE Connection

Item #: 84363482

SHP 274

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

0 ratings Write a review
In stock
us Imported from USA store

QTY:

Order now and get it around Monday, July 27
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Mastercool’s CO2 couplers are specially designed for R744 systems, meeting SAE specifications for refrigerant containment, with reliable, self-locking construction and high pressure resistance.
U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
Note: Step 1 Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

Precision Engineering
Designed specifically for R744 systems, ensuring optimal performance and reliability in CO2 applications. Its precise construction minimizes leakage, promoting efficiency in refrigerant management.
Easy Compatibility
Equipped with a 1/4" SAE connection, this coupler seamlessly integrates with standard refrigeration tools, making it user-friendly for technicians across various systems without the need for additional adapters.
Durable Materials
Constructed from high-quality materials, this coupler withstands high pressures and provides long-lasting durability, ensuring it can handle tough environments and demanding refrigeration tasks without compromise.

Product Details

Shop Mastercool Low Side CO2 Coupler for R744 Systems, 84934-CO2, 1/4 SAE Connection online at a best price in Saint Helena. B0CKRYW8D5
Item Weight0.8 lbs (360 grams)

Who Should Buy?

Suitable For
  • Refrigeration Technicians

    Ideal for professionals working with R744 systems in HVAC and refrigeration applications requiring precise low-side connections.

  • DIY Enthusiasts

    Perfect for home mechanics looking to service CO2 systems, facilitating easier handling and connection processes.

  • Environmental Engineers

    Suitable for engineers focused on sustainable refrigerants, as it accommodates CO2 usage in eco-friendly cooling solutions.

Not Suitable For
  • Non-Technical Users

    Individuals lacking refrigeration knowledge may struggle with this coupler, risking improper use or damaging systems.

Product Description

Mastercool Low Side CO2 Coupler for R744 Systems, 84934-CO2, 1/4" SAE Connection

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Mastercool Low Side CO2 Coupler used for?

    Answer: The Mastercool Low Side CO2 Coupler is specifically designed for service and maintenance on R744 systems which utilize carbon dioxide as a refrigerant. This coupler allows technicians to securely connect diagnostic equipment or refrigerant handling tools to the low-pressure side of CO2 systems, facilitating efficient maintenance operations. In practical scenarios, it's essential for diagnosing system issues, adding or recovering refrigerant, and ensuring optimal system performance.
  • Question: What is the connection type for the Mastercool Low Side CO2 Coupler?

    Answer: The Mastercool Low Side CO2 Coupler features a 1/4 SAE connection type. This standard connection makes it compatible with various refrigerant handling tools and diagnostic equipment used in HVAC and refrigeration systems. Technicians appreciate the universal compatibility, as it streamlines the servicing process and enhances efficiency when working on a variety of systems that require low-side couplers.
  • Question: Is the Mastercool Low Side CO2 Coupler compatible with other refrigerants?

    Answer: Designed primarily for use with CO2 (R744), the Mastercool Low Side CO2 Coupler is not recommended for use with other refrigerants, especially those with substantially different characteristics, like R134a or R410A. This specialization ensures that the coupler maintains a safe and efficient connection for CO2 systems. For practitioners, using the correct coupler with the designated refrigerant prevents leaks and potential safety hazards during service.
  • Question: What are the key features of the Mastercool Low Side CO2 Coupler?

    Answer: Key features of the Mastercool Low Side CO2 Coupler include its robust construction, ease of use, and one-handed operation design. The durable build is crucial for the high-pressure conditions of CO2 systems, ensuring reliability. The ergonomic design allows technicians to connect and disconnect quickly, making servicing more efficient, especially in confined spaces or during emergencies where time is critical.
  • Question: How do you use the Mastercool Low Side CO2 Coupler?

    Answer: To use the Mastercool Low Side CO2 Coupler, first ensure that the system is off and any residual pressure has been relieved. Then, securely attach the coupler to the low-side service port, ensuring a tight seal to prevent refrigerant leaks. Once connected, you can monitor pressures or add refrigerant as needed. This step-by-step approach helps technicians safely and effectively manage CO2 systems during regular maintenance or troubleshooting.
  • Question: Can the Mastercool Low Side CO2 Coupler be used for vacuum testing?

    Answer: While the Mastercool Low Side CO2 Coupler is designed for CO2 refrigerant applications, it is not recommended for vacuum testing. The coupler is specifically built to handle the pressures associated with CO2 systems. For vacuum testing, dedicated HVAC vacuum tools should be utilized to ensure accuracy and safety, helping to avoid any damage to refrigeration systems from improper usage.
  • Question: What are potential applications for the Mastercool Low Side CO2 Coupler?

    Answer: The Mastercool Low Side CO2 Coupler is ideal for various applications, including refrigeration service, HVAC maintenance, and commercial cooling systems that utilize R744 refrigerants. Its reliable connection is vital for technicians performing routine servicing, troubleshooting, or system repairs. In practice, it is particularly useful in grocery stores and cold storage facilities where CO2-based systems are prevalent, ensuring their longevity and efficiency.
  • Question: Why is the Mastercool Low Side CO2 Coupler a preferred choice for technicians?

    Answer: Technicians prefer the Mastercool Low Side CO2 Coupler due to its reliability, durability, and ease of use in high-pressure applications. The coupler's design minimizes the risk of leaks and ensures a secure connection to CO2 systems, which is crucial for safe and effective service. Additionally, the ease of one-handed operation allows technicians to focus on their tasks without fumbling with equipment, improving productivity during maintenance.
  • Question: Is there a warranty or guarantee for the Mastercool Low Side CO2 Coupler?

    Answer: Yes, the Mastercool Low Side CO2 Coupler typically comes with a manufacturer's warranty, which provides protection against defects in material and workmanship. While warranty terms may vary, it usually reflects the manufacturer's confidence in the coupler's reliability. This assurance is essential for technicians investing in tools that they rely on for daily operations, ensuring long-term performance and peace of mind.
  • Question: Where can I buy the Mastercool Low Side CO2 Coupler for R744 Systems?

    Answer: You can buy the Mastercool Low Side CO2 Coupler for R744 Systems (Model: 84934-CO2) with a 1/4 SAE connection on Ubuy. Ubuy is a well-known online marketplace that offers a wide selection of HVAC tools and equipment, providing access to quality products for your needs in Saint Helena. Ubuy ensures a user-friendly shopping experience and prompt delivery options tailored to your convenience.

Mastercool Cooling & Water Pump Tools Editorial Review

No editorial reviews found

Customer Reviews & Ratings

5.0
1 customers ratings
  • 5 Star
    100%
  • 4 Star
    0%
  • 3 Star
    0%
  • 2 Star
    0%
  • 1 Star
    0%

Review this product

Share your thoughts with other customers

Platform Trust & Buyer Confidence

trustpilot logo
4.3/5 9,000 + reviews
Read reviews
MT
Mohd
Verified buyer

“The product received very good packaging & safe…Thank You”

16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer

“Accurate delivery timing given”

16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer

“Not madly expensive like I thought, and much quicker than promised.”

15 June 2026 · via Trustpilot
LM
Leila
Verified buyer

“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”

6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer

“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”

12 June 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Product Price History

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

SHP 274

Order now and get it around Monday, July 27

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Specially designed for R744 systems
  • Meets SAE specifications for refrigerant containment
  • Reliable and self-locking construction
  • High pressure resistance (burst pressure of ≥ 8700 psi)
  • Provides precise filling with adjustable opening
  • Easy disconnect with automatic pressure relief

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.