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REFRIGERANT GAS MAXREF R-507

REFRIGERANT GAS MAXREF R-507

AED 244.00

Maxref R-507 Refrigerant Gas

Maxref R‑507 is a non‑ozone‑depleting hydrofluorocarbon (HFC) blend designed as a direct replacement for R‑502 in low- and medium-temperature refrigeration systems. It offers robust performance and reliability in demanding commercial environments, including supermarkets, transport refrigeration, cold storage, and industrial freezers.


Composition & Key Properties

  • Blend Composition: A 50/50 azeotropic mixture of HFC-125 (Pentafluoroethane) and HFC-143a (1,1,1-Trifluoroethane) by weight

 

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Description

Performance & Benefits

  • Efficiency & Capacity: Comparable or slightly superior to R‑502, with around 6% higher capacity and slightly improved theoretical efficiency

  • Lower Compressor Discharge Temps: Up to ~7.4 °C (13 °F) cooler than R‑502, potentially extending compressor lifespan and improving oil stability

  • Stable Performance Post-Leakage: As an azeotrope, R‑507 maintains performance even after recharge cycleS

  • Operational Conditions: Boiling point of about –46.7 °C (–52 °F) at 1 atm, making it well-suited for low‑temperature application.

  • Lubricant Requirements: Requires polyolester (POE) oils—monitoring and ensuring proper miscibility is critical. Mineral or alkyl benzene oils are incompatible.

  • Retrofit Advisories: For R‑502 system conversions, aim to replace at least 95% of original mineral oil, install a molecular sieve-type drier (XH9 preferred), upgrade expansion valves, and consider condenser upsizing for optimal efficiency


Safety, Handling & Regulations

  • Safety Classification: ASHRAE A1 (non‑flammable, low toxicity); Group L1 status

  • Health & Hazard Profile:

    • Colorless, volatile liquefied gas—high-pressure risk if heated

    • May cause asphyxiation in confined spaces; vapors heavier than air

    • Frostbite risk on direct contact; decomposition at >250 °C can release hazardous byproducts like hydrofluoric acid (HF)

    • Quick Comparison & Highlights

      Feature Specification
      Blend Composition 50/50 HFC-125 / HFC-143a
      ODP / GWP 0 / ~3,900–3,985
      Cooling Performance Similar or superior to R-502
      Compressor Discharge Temp ~7 °C lower than R-502
      Lubricant Requirement Polyolester (POE) oil
      Safety Rating ASHRAE A1 (non-flammable, low toxicity)
      Storage & Transport Cool, ventilated; UN3163, Class 2.2
      Regulatory Handling Recovery required; no venting permitted

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