Jihepu 2XZ-1 Oil-Lubricated Rotary Vane Vacuum Pump with Integrated Negative Pressure Gauge

Overview

The Jihepu 2XZ-1 is an oil-lubricated rotary vane vacuum pump engineered for reliable, low-maintenance operation in general laboratory and light industrial vacuum applications. Based on the proven Couette-flow principle of gas displacement via rotating eccentric vanes within a cylindrical stator chamber, the 2XZ-1 achieves stable evacuation down to a total ultimate pressure of ≤1.33 Pa and a partial pressure of ≤6×10⁻² Pa. Its compact footprint (460×140×240 mm), lightweight construction (17 kg net), and 1 L/s nominal pumping speed make it suitable as a primary vacuum source for benchtop systems or as a forepump for high-vacuum stages—including diffusion pumps, turbomolecular pumps, and titanium sublimation pumps. Designed for continuous duty under ambient temperatures of 5–40 °C, the unit complies with standard mechanical vacuum system safety practices and integrates seamlessly into ISO-classified cleanrooms and GLP-compliant lab environments where traceable vacuum performance is required.

Key Features

• Integrated negative-pressure gauge (range: –0.01 MPa) mounted directly at the inlet port, enabling real-time visual monitoring of system vacuum level without external instrumentation.
• Dual-stage anti-backstreaming protection: a mechanical check valve combined with a gravity-actuated oil trap prevents back-diffusion of pump oil into the vacuum chamber during shutdown or pressure transients.
• Engineered air-cooled induction motor (0.25 kW, 1400 rpm) with dual-voltage compatibility (220/380 V AC, 50 Hz), optimized for stable torque delivery across variable load conditions.
• Gas ballast (air bleed) valve—factory-calibrated to minimize water vapor condensation in the oil sump, thereby extending oil service life and maintaining consistent ultimate pressure over extended operation.
• Low-noise enclosure design (<65 dBA at 1 m) achieved through precision-balanced rotor assembly, vibration-damping mounting feet, and acoustically treated housing panels.
• Standard KF-16 flange interface (Φ20 mm outer diameter) with optional adapters for ISO-KF, CF, or custom vacuum fittings—ensuring interoperability with common laboratory vacuum accessories.

Sample Compatibility & Compliance

The 2XZ-1 is compatible with non-corrosive, non-reactive gases and vapors typical in vacuum drying, freeze-drying, degassing, vacuum impregnation, and thin-film deposition processes. It is not rated for solvent-laden, acidic, or halogenated process streams without prior condensation or scrubbing. The pump meets GB/T 19950–2005 (Chinese national standard for rotary vane vacuum pumps) and conforms to general safety requirements outlined in IEC 61000-6-3 (EMC emission limits) and IEC 60335-1 (household and similar electrical appliance safety). While not certified to UL or CE for standalone sale in North America or the EU, its mechanical architecture and operational parameters align with ASTM F2464–05 (Standard Guide for Vacuum System Performance Verification) and ISO 21360-1:2020 (vacuum pump calibration methodology).

Software & Data Management

As a manually operated mechanical pump, the 2XZ-1 does not incorporate embedded firmware, digital controllers, or data logging interfaces. Vacuum level is monitored solely via the integrated analog negative-pressure gauge. For integration into automated systems, users may add third-party pressure transducers (e.g., capacitance manometers calibrated per ISO 3567) and connect to SCADA or LabVIEW-based acquisition platforms via 4–20 mA or RS-485 outputs. Audit trails, calibration records, and maintenance logs must be maintained externally in accordance with GLP (21 CFR Part 58) or GMP (21 CFR Part 211) documentation protocols when deployed in regulated R&D or production settings.

Applications

• Primary vacuum source for laboratory vacuum ovens, lyophilizers, and desiccators requiring pressures between 10⁰ and 10⁻¹ Pa.
• Forepump for diffusion pumps and turbomolecular pumps in electron microscopy, surface analysis (XPS, AES), and residual gas analysis systems.
• Vacuum packaging and degassing of resins, adhesives, and composite pre-pregs in materials science labs.
• Supporting vacuum-assisted filtration, solvent recovery, and inert-gas purging in chemical synthesis workflows.
• Pre-evacuation and roughing stage for vacuum metallization, sputtering, and thermal evaporation coating systems.
• Functional testing of refrigeration components (e.g., compressors, heat exchangers) on HVAC production lines.

FAQ

What is the recommended oil type and replacement interval?
Use only ISO VG 100 or equivalent mineral-based vacuum pump oil (e.g., Edwards RV 100, Leybold Driplex A). Replace oil after initial 100 hours of operation; thereafter, every 500–1000 hours depending on operating load and gas composition.
Can the 2XZ-1 be operated continuously?
Yes—provided ambient temperature remains within 5–40 °C, oil level is maintained at the midpoint of the sight glass, and the gas ballast valve is opened when pumping condensable vapors.
Is this pump suitable for use with aggressive chemicals?
No. The 2XZ-1 is designed for dry, non-corrosive gases only. Exposure to solvents, acids, or halogens will degrade seals and contaminate oil, voiding warranty and compromising performance.
How do I verify ultimate pressure performance?
Connect a calibrated capacitance manometer (e.g., MKS Baratron 626B) to the inlet port, isolate all external loads, open the gas ballast fully, and allow stabilization for ≥30 minutes. Measured pressure should meet or exceed ≤1.33 Pa (total pressure) per GB/T 19950.
Does the pump include overload or thermal protection?
Yes—the motor incorporates a bimetallic thermal cutout that interrupts power if winding temperature exceeds safe limits; automatic reset occurs upon cooling.