Dinesh High Vacuum Engineering Ultra Oil 20 (DUO 20) is a heavy-duty, highly refined hydrotreated hydrocarbon lubricant engineered specifically for large-scale, multi-stage rotary vane and mechanical booster vacuum pumps. Designed to function as a direct, 100% drop-in equivalent to Edwards Ultragrade 20, DUO 20 provides the enhanced kinematic viscosity and robust thermal tracking required to protect high-throughput vacuum machinery operating under sustained thermal loads. Standard vacuum oils often shear or volatilize when pumps run hot for extended periods. DUO 20 mitigates this risk by utilizing a advanced hydro-cracked base oil infrastructure. By completely purging reactive aromatics, sulfur compounds, and unstable molecules, DUO 20 achieves a remarkably high viscosity index. Combined with our proprietary oxidation inhibitors, this fluid maintains its lubrication films at peak operational temperatures, reliably sealing clearances to maximize constant volumetric displacement and prevent internal backstreaming. 🛡️Key Features & Technical Benefits -- Exact Edwards Ultragrade 20 Technical Alternative : Formulated to mirror the chemical makeup and performance thresholds of Ultragrade 20, eliminating the need for expensive system flushing during switchovers. -- Elevated Viscosity Index (60-68 cSt @ 40°C) : Provides robust hydrodynamic lubrication films inside larger mechanical pumps, ensuring tight rotor-to-stator clearances are perfectly sealed even under harsh continuous-duty applications. -- Exceptional Low Volatility (1x10^-7mbar at 20°C ) : High molecular weight limits oil vaporization into the process stream, protecting system purity and ensuring deep ultimate vacuum acquisition. ✅Core Applications & Equipment Compatibility DUO 20 vacuum oil is optimized for large industrial, chemical, and metallurgical vacuum environments where massive gas volumes are processed continuously. 1) Target Pump Models : -- Edwards Industrial Pumps: E1M40, E1M80, E2M40, E2M80, E2M175, E2M275 series rotary vane lines. -- Mechanical Boosters: Backing oil compatibility for Edwards EH series (EH250, EH500, EH1200, EH2600) and mechanical blower backup systems. -- Cross-Brand Large Machinery: Suitable for heavy industrial pumps from Leybold (Trivac D40B/D65B), Bush, and Kinneys requiring an ISO VG 68 equivalent high-vacuum fluid. 2) Common Industrial Settings : -- Vacuum Distillation, Freeze Drying, & Large Scale Dehydration Systems -- Vacuum Furnaces, Laser Sintering, & Plasma Metallurgy -- Transformer Oil Purification & Degassing Systems -- Large Analytical Mass Spectrometer Backing Systems -- Space Simulation Chambers & High-Volume Component Testing
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