Import Double-Stage Vacuum Oil Purifying Machine — Buy in Bulk from Supplier in China

The Double-Stage Vacuum Oil Purifying Machine from Chongqing Zhongneng is designed to restore degraded insulation oils used in high-voltage power equipment, including transformer oil, mutual inductor oil, and switchgear oil rated above 110kV. It achieves a working vacuum of approximately 135 Pa and a peak vacuum of 15 Pa, enabling deep dehydration and degassing. The system integrates duplex 3D stereo-evaporation and UK G technology to remove both free and dissolved water, including chain-forming moisture that single-stage units cannot fully extract.

The filtration system uses a double FH trapezoidal network with high-polymer absorbents, eliminating mechanical filtration and reducing particulate contamination without adding wear components. Carbon fiber infrared heating ensures precise temperature control, reducing ethyne content to zero after treatment, a critical requirement for transformer oil compliance with IEC 60422. The machine supports online purification, allowing treatment without disassembly of equipment, and is compatible with oils of varying grades and viscosities without pre-conditioning.

This equipment is primarily purchased by utility companies, transformer manufacturers, and maintenance contractors servicing high-voltage substations and transmission networks. It is typically shipped in a modular frame with integrated control panel and requires a three-phase 380V power supply. Packaging is standard export crate with foam padding and steel strapping. Buyers should confirm the exact flow rate, power consumption, and inlet/outlet port sizes prior to order, as these vary with model configuration.

Chongqing Zhongneng Oil Purifier Manufacture Company is a manufacturer based in Huojie Street, Chongqing, China, specialising in vacuum oil purification systems for high-voltage electrical applications. The company's profile indicates it is an imported supplier with harbor-level trust verification, suggesting it has completed export documentation and customs clearance processes. There is no public data on years in operation, employee count, or annual output volume.

The listing confirms the company produces and ships this specific model, with technical documentation provided via direct contact. No certifications such as CE, ISO, or ASTM are mentioned, and no client references or case studies are listed. The company responds to inquiries via email and mobile phone, but no automated response rate or average reply time is recorded. Buyers should treat all technical claims as manufacturer-provided and validate independently before purchase.