REFRIGERANT GAS EURO R‑507

Euro Refrigerant R-507 is a non-ozone depleting HFC refrigerant designed as a long-term replacement for R-502 in low- and medium-temperature commercial refrigeration applications. Formulated as a 50/50 azeotropic blend of R-125 and R-143a, R-507 delivers stable, consistent performance with no glide during phase change. Unlike zeotropic refrigerants, it retains its composition even in the event of minor system leaks, ensuring predictable behavior across multiple service and recharge cycles.

With its zero Ozone Depletion Potential (ODP = 0) and ASHRAE A1 safety classification (nonflammable, low toxicity), Euro R-507 is both environmentally responsible and operationally safe. Its thermodynamic properties closely match those of R-502, making it the industry’s preferred retrofit and new-system refrigerant for supermarkets, cold storage, ice cream freezers, and transport refrigeration.

By offering high cooling capacity, excellent energy efficiency, and reliable performance in extreme conditions, Euro R-507 continues to be a trusted solution in commercial and industrial refrigeration systems worldwide.

Key Features

• ✅ Zero Ozone Depletion Potential (ODP = 0) – safe for the ozone layer.

• ✅ ASHRAE Safety Class A1 – nonflammable and low toxicity, easy to handle with proper precautions.

• ✅ Azeotropic Behavior – no temperature glide, ensuring stable operation and uniform heat transfer.

• ✅ Consistent Composition – maintains blend integrity even after leaks or repeated recharges.

• ✅ Direct R-502 Replacement – suitable for both retrofits and new installations.

• ✅ High Reliability – proven stability in demanding, continuous-duty refrigeration systems.

Applications

• Supermarket display cases (frozen and refrigerated)

• Ice cream freezers and low-temperature cabinets

• Blast freezers and cold storage warehouses

• Transport refrigeration systems

• Walk-in coolers and freezers

• Flooded evaporator systems where glide-free refrigerants are required

Usage Guidelines

• Always charge in liquid form to preserve azeotropic balance.

• When retrofitting from R-502:

  • Fully recover and purge old refrigerant.

  • Replace mineral oil or alkylbenzene oil with POE (polyol ester) oil.

  • Adjust system charge and verify expansion valve settings.

• Maintain strict leak prevention protocols, as R-507 has high GWP.

• Ensure proper ventilation and safety compliance during servicing to prevent over-pressurization.

FAQs

Q1: Can Euro R-507 replace R-502 directly in existing systems?
A: Yes, R-507 is designed as the closest match to R-502. Only lubricant replacement (to POE) and a proper charging procedure are required. Most systems do not need major hardware changes.

Q2: Why doesn’t Euro R-507 exhibit glide?
A: Because it is an azeotropic blend, meaning it boils and condenses at a single, uniform temperature, unlike zeotropic blends such as R-407C. This simplifies system operation and ensures consistent cooling performance.

Q3: Is Euro R-507 environmentally friendly?
A: It has zero ODP, protecting the ozone layer. However, it has a relatively high GWP (~3,900), so strict leak management is important to minimize climate impact.

Q4: What types of oils are compatible with Euro R-507?
A: Only POE oils should be used. Mineral oil (MO) and alkylbenzene (AB) lubricants are not compatible and must be replaced during retrofits.