XIU LAB XU-SV Series Single-Stage Rotary Vane Vacuum Pump

Overview

The XIU LAB XU-SV Series is a family of single-stage, oil-lubricated rotary vane vacuum pumps engineered for reliable and continuous operation in general laboratory, pilot-scale, and light industrial vacuum applications. Based on the proven Couette-flow principle of rotary vane displacement, these pumps generate vacuum by rotating an eccentrically mounted rotor with sliding vanes inside a cylindrical stator chamber. As the rotor turns, the vanes extend under centrifugal force and hydraulic pressure, forming sealed crescent-shaped chambers that progressively reduce volume — thereby compressing and expelling gas through the exhaust valve. Designed for stable performance under variable load conditions, the XU-SV series delivers consistent ultimate pressures between 0.1 and 1.5 mbar (absolute), depending on model configuration and ambient conditions, and supports pumping speeds ranging from 10 to 300 m³/h at 50 Hz supply frequency.

Key Features

• Robust cast-iron housing with precision-machined stator and rotor assemblies for thermal stability and long-term dimensional integrity
• Self-adjusting carbon-graphite vanes with low wear coefficient and high resistance to oil degradation
• Integrated oil mist separator and baffle system to minimize oil carryover and meet ISO 8573-1 Class 3 particulate standards
• Thermally protected motor with IP55 enclosure rating and Class F insulation for continuous duty cycles
• Standardized inlet ports conforming to ISO-KF (KF25) and BSP (G¼”, G½”, G1″, G2″) specifications for seamless integration into vacuum manifolds and custom systems
• Low-noise design incorporating vibration-damping feet, acoustic enclosures (on select models), and optimized exhaust muffling — noise levels range from 65 to 78 dBA at 1 m distance
• Oil sight glass, drain plug, and fill port positioned for routine maintenance access without disassembly

Sample Compatibility & Compliance

The XU-SV series is compatible with non-corrosive, dry or moderately humid gases typical of vacuum drying ovens, freeze dryers, vacuum filtration setups, degassing baths, and vacuum packaging stations. It tolerates up to 40 mbar partial pressure of water vapor and handles condensable loads up to 5 kg/h — enabling use in applications involving aqueous solvent removal, where intermittent water vapor ingress occurs. All units comply with CE marking requirements per EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. Electrical safety conforms to IEC 60034-1 and IEC 60204-1. While not certified for explosive atmospheres (ATEX), the pump may be deployed in Zone 2 environments when installed with appropriate ventilation and grounding per IEC 60079-14.

Software & Data Management

The XU-SV is a standalone mechanical device with no embedded digital controller or communication interface. However, it integrates seamlessly with third-party vacuum monitoring systems via analog 0–10 V or 4–20 mA pressure feedback outputs (optional add-on). For laboratories operating under GLP or GMP frameworks, external pressure loggers with audit-trail functionality (e.g., compliant with FDA 21 CFR Part 11) may be used to record operational parameters including runtime, inlet pressure trends, and motor current draw. Maintenance logs — including oil change intervals, vane inspection dates, and filter replacements — should be retained per ISO/IEC 17025 Clause 8.3 for equipment traceability.

Applications

• Primary vacuum generation for rotary evaporators and short-path distillation systems
• Evacuation of vacuum desiccators and glove boxes (with auxiliary backing for high-vacuum stages)
• Support vacuum for electron microscopy sample preparation chambers and plasma etch pre-pumps
• Process vacuum in pharmaceutical lyophilization skids and food dehydration lines
• Backing pumps for diffusion pumps, turbomolecular pumps, and cryopumps in research-grade vacuum systems
• Routine degassing of resins, adhesives, and composite prepregs prior to curing

FAQ

What is the recommended oil type and change interval?
XIU LAB specifies ISO VG 68 mineral-based vacuum pump oil (e.g., Shell Vacuol 68 or equivalent). Under continuous operation at ambient temperatures <30 °C and low moisture load, oil should be changed every 1,000–2,000 hours; more frequent changes are advised if water vapor or solvent exposure exceeds rated capacity.
Can the XU-SV operate continuously at its ultimate pressure?
Yes — the pump is rated for continuous duty at ultimate pressure. However, prolonged operation near ultimate pressure with minimal gas throughput may accelerate oil oxidation; installing a gas ballast valve (standard on all models) improves vapor handling and extends oil life.
Is this pump suitable for vacuum metallurgy or semiconductor processing?
No — the XU-SV is not designed for ultra-high purity or hydrocarbon-free environments. Its oil-lubricated architecture introduces hydrocarbon backstreaming risks; applications requiring base pressures <10⁻³ mbar or hydrocarbon contamination limits <10⁻⁹ g/s require dry scroll, diaphragm, or turbomolecular alternatives.
Does the pump include a built-in pressure gauge or auto-shutoff?
No — the XU-SV operates as a fixed-speed mechanical pump. External vacuum gauges and programmable logic controllers must be integrated separately for process automation or safety interlocks.
What certifications does the XU-SV hold for international shipping?
Units shipped outside China include RoHS-compliant documentation, CE DoC, and full technical files per EN 61000-6-3/6-4. UN 3363 classification applies for air freight due to oil-filled internal volume; proper packing per IATA Packing Instruction 950 is required.