KSTONE KSLH-55Y/80/600Y is a professional manual SF6 negative pressure recovery unit with 600L liquid storage capacity, specially designed for high-voltage switchgear (GIS) manufacturers and maintenance service providers. Adopting high-pressure refrigeration liquefaction and air-cooled technology, this mobile hand-push type equipment can realize efficient recovery, purification, liquefaction storage and refilling of SF6 gas. It can reduce the residual pressure of SF6 in GIS to 1kPa (absolute pressure), with a purification efficiency of up to 99.99%, which fully meets the industrial application requirements of SF6 gas recycling and environmental protection.

• ✅ Ultra-high Recovery Precision – Final recovery pressure ≤-0.1MPa, residual gas is almost completely recovered
• ✅ Efficient Liquefaction Storage – 600L special liquid storage vessel, maximum storage capacity 600kg, pressure resistance 4MPa
• ✅ Fast Processing Speed – 1m³ SF6 gas recovery only takes ≤0.15h (depending on interface size)
• ✅ Integrated Multi-function – One machine for recovery, purification, drying, filtration and refilling
• ✅ Flexible Mobile Application – Compact structure, hand-push design, suitable for on-site maintenance of HV switchgear
• ✅ Reliable Quality Certification – ISO9000 certified, stable performance, adapt to industrial on-site working environment

The equipment is equipped with high-performance SF6 compressor (55m³/h), vacuum compressor (80m³/h) and vacuum pump (63m³/h), matching professional drying and filtration system, which ensures the purity of recovered SF6 gas and the stability of the whole machine operation. The 600L high-pressure resistant liquid storage vessel adopts special sealing technology to realize safe and reliable long-term storage of SF6 liquid.

1. Negative Pressure Recovery – The vacuum pump extracts the residual SF6 gas in GIS to the recovery unit under negative pressure condition, with final residual pressure ≤-0.1MPa
2. Purification & Drying – The recovered gas is filtered and dried by the built-in purification system to remove impurities and moisture, ensuring 99.99% SF6 concentration
3. Liquefaction Storage – The purified SF6 gas is converted into liquid state by high-pressure refrigeration liquefaction technology and stored in the 600L special vessel
4. Precision Refilling – The liquid SF6 is vaporized and refilled back to GIS equipment according to the working pressure requirement, with refilling final pressure up to 0.7MPa

This SF6 negative pressure recovery system is the core supporting equipment for high-voltage switchgear (GIS) manufacturers and professional maintenance service providers, and is widely used in:

• SF6 gas recovery and refilling during the production and assembly of high-voltage switchgear
• On-site maintenance and replacement of HV switchgear in power plants, substations and industrial parks
• SF6 gas recycling and environmental protection treatment in power equipment maintenance industry
• Residual SF6 gas recovery of various SF6-filled electrical equipment

• Stable negative pressure recovery
• 600L large-capacity liquid storage tank
• Oil-free compression process
• High vacuum evacuation performance
• Designed for factory and field use
• Easy maintenance structure
• Long service life industrial components

This SF6 Gas Recovery Unit integrates:

• SF6 gas recovery
• Vacuum evacuation
• Gas purification
• Liquid storage
• Gas refilling

It is suitable for:

• GIS production lines
• Circuit breaker manufacturing
• Substation overhaul
• High voltage switchgear service

This SF6 recovery system is built to operate in:

• High-temperature environments (Middle East)
• Cold climate conditions (Russia)
• Industrial factory workshops
• On-site substation maintenance

We provide:

• Russian language technical support
• CE compliant components
• Export-ready documentation
• Remote engineering assistance

Closed-loop recovery prevents gas leakage and environmental fines.

Faster evacuation and refill process reduces downtime.

Clean gas handling prevents moisture and contamination damage.

Reusable recovered SF6 reduces gas purchase expenses.

• Switchgear manufacturers
• GIS production factories
• Power utility companies
• Electrical service contractors
• High voltage maintenance providers

We offer:

• Portable version
• Automatic control upgrade
• Explosion-proof configuration
• Custom voltage & frequency
• Logo branding for distributors

• Installation guidance
• Online engineer support
• Spare parts availability
• Remote troubleshooting
• Operation training

Looking for a reliable SF6 Recovery System manufacturer?

Contact our engineering team today for:

• Technical datasheet
• Customized solution
• Export quotation
• Delivery timeline