UNIGY Sulfur Hexafluoride (SF₆) Compressor
The UNIGY sulfur hexafluoride (SF₆) compressor is renowned in the industry for its high performance, high reliability and oil-free design. It is particularly suitable for scenarios with stringent requirements for gas purity and airtightness, such as power systems, high-voltage switchgear maintenance, and gas recovery. Below is a comprehensive evaluation:
Full Oil-free Design
Oil-free lubrication technology is adopted, ensuring that no lubricating oil comes into contact with the gas during the compression process and thus preventing SF₆ contamination.
The product has obtained TÜV CLASS 0 Oil-free Certification, complying with the world’s highest clean gas standards, and is applicable to sensitive industries such as power, semiconductors and medical care.
Ultra-low Leakage Rate
The fully sealed structure features an annual leakage rate ≤ 0.01 mbar·L/s, far superior to the conventional industry level (typically 0.1–1 mbar·L/s).
It is equipped with a patented zero-leakage sealing device (the large-bevel O-ring + self-lubricating shaft seal as specified in Patent No. CN222894349U), ensuring safe and environmentally friendly long-term operation.
Compact Structure & Stable Operation
The direct-drive design (e.g., Model OF30/50-4-DZ) reduces transmission components and lowers failure rates.
With low noise and low vibration, it is suitable for indoor use or installation near operation areas.
Long-life roller bearings are used, enabling an extended maintenance-free period.
Optimized Specifically for SF₆
Materials and seals are specially selected for SF₆’s chemical inertness and high-density characteristics to avoid corrosion or performance degradation.
It can be integrated with a combined system for gas recovery, purification and storage, improving operation and maintenance efficiency.
⚙️ Typical Application Scenarios
SF₆ gas charging, discharging and recovery for high-voltage GIS (Gas Insulated Switchgear)
On-site maintenance of power equipment such as circuit breakers and mutual inductors
SF₆ recycling systems in laboratories or industrial settings
📊 User Feedback (Synthesized from Public Channels)
High reliability: Most users reported continuous fault-free operation for thousands of hours.
Low maintenance cost: Simple maintenance is achieved thanks to the oil-free design and minimal wear.
Fast after-sales service response: Technical support teams are available in Nanjing and Luoyang.
⚠️ Notes
Relatively high price: The initial investment is higher compared with ordinary oil-lubricated compressors (starting at approximately RMB 50,000), but in the long run, it can save costs on maintenance and gas loss.
Professional operation required: SF₆ is a greenhouse gas. The use of the equipment must comply with environmental protection regulations, and it is recommended to be operated by trained personnel.
🔚 Conclusion
The UNIGY SF₆ compressor is a professional high-end device that excels in airtightness, cleanliness and stability. It is especially suitable for fields with strict requirements for gas purity and environmental protection, such as power, energy and scientific research. If budget permits and long-term reliable operation is a priority, it is a highly recommended choice.
