The RF-391 Large-scale SF₆ Recovery Unit is designed for comprehensive gas handling services in SF₆ electrical equipment and switchgear chambers. This integrated system combines multiple functions including vacuum pumping, gas recovery, refilling, cylinder compression, and vaporized output. During vacuum operations, the PLC interface displays real-time vacuum level changes. Recovered gas can be stored in onboard tanks or external cylinders, while refilling offers multiple options: direct filling (with pressure-regulated output) or compression filling (gas-phase or liquid-phase compression).

Engineered to meet DL/T 662 standards, the unit features a semi-enclosed protective structure with modular design, ensuring complete functionality, stable performance, easy maintenance, user-friendly operation, and an aesthetically compact form factor. Ideal for diverse SF₆ gas recovery scenarios, it is widely deployed across power systems for reliable operation under varying conditions.

▎Key Features ：

1.SF₆ gas recovery and storage.

2.Refilling stored SF₆ to switchgear or pressure vessels.

3.Filters moisture/decomposition products/particulates from SF₆.

4.Self/external equipment vacuum pumping with real-time monitoring.

5.Negative pressure recovery for higher efficiency.

6.Vacuum pump anti-backflow valve.

7.Independent storage tank & gas heating system.

8.Liquid SF₆ filling (5~8 min for 50kg into 40L cylinder).

9.Optional cooling methods for global climate adaptability.

▎Technical Specifications ：

Parameter Name	Parameter Value
Filter	Removes Moisture, Decomposition Products & Solid Particles
Filtration Particle Size	≤1 μm
Pressure-regulated Output	(1~10) bar
Vaporizer	1.5 kW
Recovery Hose	DN19×10m, One End: DN20 Self-sealing Connector Other End: Ball Valve & Cylinder Connector
Refill Hose	DN13×3m, One End: DN20 Self-sealing Connector Other End: Ball Valve & Cylinder Connector
Auxiliary Cooling Method	Water-cooled
Applicable Scope	SF₆ Recovery/Refill for 110kV~500kV GIS
Oil-free Water-cooled Compressor	30 m³/h
Oil-free Booster	5 m³/h @ Liquid SF₆
Final Output Pressure	50 bar
Dimensions	2850×1500×1760 mm (L×W×H)

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▎Product Introduction ：

The RF-391 Large-scale SF₆ Recovery Unit is designed for comprehensive gas handling services in SF₆ electrical equipment and switchgear chambers. This integrated system combines multiple functions including vacuum pumping, gas recovery, refilling, cylinder compression, and vaporized output. During vacuum operations, the PLC interface displays real-time vacuum level changes. Recovered gas can be stored in onboard tanks or external cylinders, while refilling offers multiple options: direct filling (with pressure-regulated output) or compression filling (gas-phase or liquid-phase compression).