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The CO₂ Subcritical Semi-Hermetic Piston Refrigeration Compressor is specially engineered for modern industrial and commercial refrigeration systems that use CO₂ as an environmentally friendly, high-efficiency refrigerant. With a durable semi-hermetic structure and advanced piston technology, this compressor delivers powerful cooling performance under CO₂ subcritical conditions while maintaining excellent stability and energy efficiency. Designed for reliability and long-term operation, it is widely used in supermarkets, cold storage, food processing, and industrial cooling applications. Its compact design, strong cooling capacity, and wide operating range make it one of the preferred solutions for CO₂ subcritical refrigeration systems.
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YBFS4F-7DK~YBFS4N-30DK
Blait
Blait's CO₂ Subcritical Semi-hermetic Piston Refrigeration Compressor is an environmentally friendly and high-efficiency solution designed for modern industrial and commercial refrigeration systems. Utilizing CO₂ (R744) —a natural refrigerant with zero ozone depletion potential and ultra-low global warming impact—this compressor operates seamlessly under subcritical conditions, delivering powerful cooling performance while aligning with sustainable business goals. Its robust semi-hermetic structure and advanced piston technology ensure stability, reliability, and long service life, making it a top choice for supermarkets, cold chain logistics, food processing, and medical refrigeration applications.
Why CO₂
The King of Natural Refrigerants
CO₂ features environmentally friendly properties with ODP = 0 and GWP = 1, which is only 0.025% of R404A, making it a truly green refrigerant.
CO₂ has excellent biocompatibility and food-grade safety. Even if released directly into the atmosphere, it is harmless.
The cost of CO₂ is only one-tenth that of synthetic refrigerants, while the system service life can be increased by 30%, delivering significant economic benefits.
Subcritical vs. Transcritical
Subcritical CO₂ systems operate at pressures between 30–50 bar, offering higher energy efficiency and reducing retrofit costs by 60%.
Transcritical CO₂ systems operate at pressures as high as 80–100 bar, with relatively lower energy efficiency and higher retrofit costs.
As a sustainable refrigeration solution, it uses CO₂ (R744) to eliminate reliance on harmful synthetic refrigerants, meeting global environmental regulations and reducing carbon footprints for businesses.
Engineered to withstand the high operating pressures of CO₂ subcritical systems, the semi-hermetic structure ensures excellent sealing performance and allows easy internal maintenance—minimizing downtime and extending service life.
Optimized piston structure, thinner piston rings, and reduced clearance volume enhance compression efficiency, while the 4-cylinder design ensures balanced load distribution and lower friction loss. The advanced motor improves operational efficiency and overload capacity, expanding the operating range for medium to low-temperature applications.
With a streamlined, compact design, this piston refrigeration compressor integrates easily into new or existing CO₂ refrigeration systems. Its optimized cylinder head and valve plate reduce exhaust pulses and operational noise, ensuring quiet performance in commercial and industrial settings.
Environmental Innovation: Blait leads in eco-friendly refrigeration technology, focusing on CO₂-based solutions that combine sustainability with high performance—supported by partnerships with top universities (Xi’an Jiaotong University, China Jiliang University) for R&D.
Rigorous Quality Testing: Each compressor undergoes strict testing at Briliant’s certified testing center, complying with GB/T10079-2018 and GB/T5773-2004 standards, ensuring reliability and performance consistency.
Customizable Solutions: Offers tailored specifications, including voltage adaptations, installation fittings, and complete CO₂ refrigeration units, to meet project-specific needs.
Comprehensive Support: Backed by ISO9001, ISO14001, and ISO45001 certifications, Blait provides professional technical guidance and after-sales service for global customers.
