Chu Ding Technology HP-01 Oil-Free Diaphragm Vacuum Pump

Overview

The Chu Ding Technology HP-01 Oil-Free Diaphragm Vacuum Pump is an engineered solution for laboratory-scale vacuum generation where oil-free operation, chemical compatibility, and operational reliability are essential. Based on positive displacement via a reciprocating elastomeric diaphragm, the HP-01 eliminates hydrocarbon contamination risks inherent in rotary vane pumps—making it suitable for applications involving organic solvents, aqueous buffers, and volatile reagents. Its design adheres to fundamental principles of membrane fatigue resistance and thermal management: the 3 mm-thick nitrile rubber diaphragm incorporates a woven textile reinforcement layer to withstand repeated flexural stress under cyclic vacuum loads, while the 20 W motor is conservatively rated to minimize thermal drift during extended intermittent duty. With an ultimate vacuum pressure of 0.085 MPa (absolute) and a free-air flow rate of 10 L/min, the HP-01 delivers consistent performance in low-to-moderate vacuum regimes typical of filtration, degassing, and solvent concentration workflows.

Key Features

• Oil-free operation ensures zero risk of backstreaming hydrocarbons into sensitive samples or downstream instrumentation.
• Reinforced nitrile rubber diaphragm (3 mm thickness with embedded fabric skeleton) provides superior resistance to swelling, creep, and fatigue when exposed to common HPLC mobile phases—including acetonitrile, methanol, and phosphate buffers.
• Thermally optimized 20 W induction motor operates at low surface temperature, reducing thermal degradation of internal seals and extending service intervals.
• Compact footprint (170 × 120 × 140 mm) and lightweight construction (<2.5 kg) enable seamless integration beneath fume hoods, inside laminar flow cabinets, or adjacent to filtration manifolds.
• Low acoustic emission (<50 dB[A] at 1 m) supports quiet operation in shared analytical laboratories without requiring acoustic enclosures.
• Optional pressure regulation kit and exhaust silencer available for fine-tuned vacuum control and further noise reduction.

Sample Compatibility & Compliance

The HP-01 is compatible with standard 0.22 µm and 0.45 µm polyethersulfone (PES), nylon, and mixed cellulose ester (MCE) filter membranes used in solvent filtration assemblies and mobile phase preparation systems. It meets general safety requirements per IEC 61010-1 for laboratory electrical equipment. While not certified to UL/CSA or CE for medical or industrial continuous-duty applications, its construction and labeling comply with GB/T 2900.1–2021 (Chinese national standard for basic terminology of electrical engineering) and GB 4706.1–2005 (safety requirements for household and similar electrical appliances). For GLP-compliant environments, users should document pump usage logs, perform periodic visual inspection of diaphragm integrity, and replace the diaphragm after ≥6,000 operating hours or upon visible cracking/stiffening.

Software & Data Management

The HP-01 is a standalone analog device with no embedded microcontroller, firmware, or digital interface. It does not generate electronic records, nor does it support data logging, remote monitoring, or audit trail functionality. As such, it falls outside the scope of FDA 21 CFR Part 11 requirements for electronic records and signatures. In regulated laboratories, its use must be governed by written SOPs defining start/stop protocols, maintenance frequency, and verification criteria (e.g., vacuum decay test using a calibrated digital manometer). No software installation, driver configuration, or network connectivity is required or supported.

Applications

• Solvent and mobile phase filtration in HPLC and UHPLC sample preparation workflows.
• Vacuum-assisted degassing of aqueous and organic solutions prior to chromatography or spectroscopy analysis.
• Low-vacuum drying of heat-sensitive biological samples in desiccators.
• Supporting vacuum manifold systems for parallel filtration of multiple samples in QA/QC labs.
• Integration with rotary evaporators requiring modest vacuum levels (e.g., ≤0.09 MPa absolute) for gentle solvent removal.

FAQ

Is the HP-01 suitable for continuous operation with aggressive solvents like chloroform or THF?
No. Although the nitrile diaphragm exhibits good resistance to many polar organics, prolonged exposure to strong swelling agents (e.g., chlorinated solvents, ketones, esters) accelerates elastomer degradation. Intermittent use with adequate venting between cycles is strongly advised.
What is the recommended maintenance schedule?
Inspect the diaphragm visually every 500 operating hours; replace if cracked, stiffened, or thinned. Clean external surfaces with isopropyl alcohol; do not immerse or expose internal components to liquids.
Can the HP-01 be used in ISO Class 5 cleanrooms?
Yes—provided the unit is housed in a sealed enclosure with HEPA-filtered exhaust and operated within its specified ambient temperature range (10–35°C) and relative humidity (<80% RH, non-condensing).
Does it meet ASTM D854 or ISO 11348 requirements?
No—those standards pertain to sedimentation and luminescence testing, not vacuum pump performance. The HP-01 complies with no specific ASTM or ISO vacuum equipment standard, but its performance parameters align with common lab practice benchmarks for diaphragm pumps used in filtration (e.g., comparable to KNF NP 20 KN or Vacuubrand MD 1 VARIO).