Transformer Oil Purifier & Oil Tester Manufacturer

About HOPU Filtration

Chongqing HOPU Filtration Plant Manufacture Co., Ltd is a high-tech joint-stock enterprise formed from the integration of HOPU Oil Purifier Factory and HOPU Oil Tester Factory. With three dedicated manufacturing workshops across industrial parks, we deliver fully customizable oil purification and testing systems.

Our R&D, manufacturing, installation, and technical support services ensure that every HOPU-branded system exceeds international standards in performance, durability, and precision. We specialize in transformer oil filtration plants, insulation oil degassing units, vacuum lubricant oil purifiers, and advanced oil analysis instruments.

ISO-Certified Manufacturing
Global Export Network
24/7 Technical Support
AI-Empowered Filtration Systems

Our Product Range

Comprehensive portfolio of oil purification machines and precision oil testing instruments designed for transformers, turbines, hydraulics, and industrial applications.

Double Stage Vacuum Transformer Oil Purifier

Advanced two-stage degassing and dehydration system for high-voltage transformer oil. Removes moisture, gases, and particulates to restore dielectric strength.

Enclosed Cabinet Dielectric Oil Purification Plant

Fully automatic, enclosed system for safe and efficient purification of insulation oils. Ideal for indoor substations and controlled environments.

Mobile Trailer Transformer Oil Filtration Plant

Trailer-mounted, portable oil purification system for on-site transformer maintenance. Complete with vacuum pump, heater, and filtration modules.

80KV Transformer Oil BDV Tester

Color LCD breakdown voltage tester per ASTM D877. Accurately measures dielectric strength of transformer oil to ensure insulation integrity.

Vacuum Hydraulic Oil Purifier

Removes water, gases, and fine particles from hydraulic systems. Extends equipment life and maintains optimal system performance.

Transformer Turns Ratio (TTR) Tester

Precision instrument for measuring transformer winding ratios. Ensures correct operation and detects winding faults.

Online Oil Particle Counter

Real-time NAS and ISO cleanliness monitoring for lube and hydraulic oils. Continuous PPM moisture and particle analysis.

SF6 Gas Recycling Device

Eco-friendly system for recovering, purifying, and storing SF6 gas from high-voltage switchgear. Reduces emissions and operational costs.

Transformer Oil Regeneration System

Advanced clay treatment system that restores aged transformer oil to near-new condition by removing acids, sludge, and polar contaminants.

Vacuum Turbine Oil Purifier

High-efficiency system for removing water, gases, and oxidation byproducts from steam and gas turbine lubricating oils.

Why Choose HOPU Solutions

ISO Certified

Manufacturing processes meet international quality standards for reliability and performance.

AI-Empowered

Smart filtration technology with predictive maintenance and real-time performance optimization.

Global Support

Technical assistance and spare parts available worldwide with rapid response times.

Custom Solutions

Tailored oil purification and testing systems designed for your specific application needs.

Frequently Asked Questions

What is the difference between single-stage and double-stage vacuum oil purifiers?

Single-stage purifiers use one vacuum chamber for dehydration and degassing, suitable for moderate contamination. Double-stage systems have two sequential vacuum stages for deeper purification, achieving lower moisture and gas levels, ideal for high-voltage transformers.

Can your oil testers be used for online monitoring?

Yes, we offer online oil particle counters and moisture testers that provide real-time NAS cleanliness and PPM moisture analysis for continuous condition monitoring of hydraulic and lubrication systems.

Do you provide installation and training services?

Yes, HOPU provides comprehensive installation supervision, commissioning, and operator training services worldwide to ensure optimal system performance and safety.

What industries use your oil purification systems?

Our systems serve power utilities, transformer manufacturers, petrochemical plants, steel mills, wind farms, marine vessels, and industrial manufacturing facilities requiring high-purity oil maintenance.

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Advanced Oil Purification & Testing Solutions