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

Overview

The Chu Ding Technology HP-01D Adjustable 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 reinforced elastomeric diaphragm actuated by an eccentric cam mechanism, this pump delivers consistent vacuum performance without introducing hydrocarbon contamination—critical for solvent filtration, vacuum concentration of heat-sensitive samples, and inert-atmosphere drying protocols. Its ultimate vacuum level of 0.085 MPa (≈85 kPa absolute, or ~12.3 psi vac) supports routine applications such as HPLC mobile phase degassing, Buchner funnel filtration, and small-volume lyophilization pre-treatment. Designed with a compact footprint and lightweight chassis, the HP-01D is optimized for benchtop integration and portable use in multi-station labs or field-deployable analytical setups.

Key Features

• Oil-free diaphragm architecture eliminates risk of oil backstreaming and sample contamination—fully compliant with ISO 8573-1 Class 0 air purity requirements for critical vacuum pathways.
• Reinforced 3 mm-thick diaphragm composed of solvent-resistant nitrile rubber with embedded textile reinforcement layer ensures extended fatigue life under cyclic load conditions typical in intermittent vacuum duty cycles.
• Adjustable vacuum control via integrated pressure regulation valve enables precise tuning of suction force—particularly beneficial when filtering viscous solvents (e.g., DMSO, glycerol-water mixtures) or particulate-laden suspensions prone to membrane clogging.
• Low-noise operation (<52 dB(A) at 1 m distance) and thermally stable 20 W motor design minimize ambient disturbance and reduce thermal drift in adjacent instrumentation.
• Compact dimensions (220 × 120 × 180 mm) and integrated carrying handle support rapid repositioning between fume hoods, laminar flow cabinets, and mobile analytical workstations.

Sample Compatibility & Compliance

The HP-01D is compatible with aqueous, polar organic, and moderately aggressive solvents including methanol, acetonitrile, ethyl acetate, and phosphate-buffered saline—provided vapor pressures remain below the pump’s condensation threshold. It is not rated for halogenated solvents (e.g., chloroform, DCM), strong oxidizers (e.g., nitric acid vapors), or corrosive gases without external cold trap or scrubber integration. The pump meets CE marking requirements per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD). While not certified to UL or CSA standards, its construction adheres to general laboratory safety principles outlined in ANSI Z9.1–2019 (Ventilation) and ISO 15195:2018 (Laboratory equipment — General requirements). No regulatory certification for GMP/GLP environments is claimed; however, its repeatable performance and absence of lubricant migration render it suitable for non-cGMP research-grade vacuum tasks.

Software & Data Management

The HP-01D operates as a standalone analog device with no digital interface, firmware, or data logging capability. Vacuum adjustment is performed manually via rotary control valve; no software drivers, USB connectivity, or remote monitoring options are provided. This design prioritizes mechanical robustness, electromagnetic immunity, and operational transparency—eliminating potential failure points associated with microcontroller-based systems. For laboratories requiring audit trails or automated vacuum sequencing, external pressure transducers (e.g., Validated Analog Output Sensors per ASTM E2500-13) may be integrated upstream with third-party DAQ systems supporting 4–20 mA or 0–10 V analog input.

Applications

• Solvent filtration using 0.22 µm or 0.45 µm PTFE, nylon, or PVDF membrane filters in HPLC and LC-MS sample preparation workflows.
• Vacuum-assisted degassing of polymer solutions, colloidal dispersions, and cell culture media prior to casting or centrifugation.
• Low-temperature vacuum concentration of volatile analytes (e.g., terpenes, fatty acid methyl esters) using rotary evaporator-compatible manifolds.
• Pre-evacuation of desiccators and vacuum ovens operating below 60 °C, where oil contamination would compromise sample integrity.
• Support vacuum for small-scale vacuum impregnation of porous scaffolds in biomaterials research.

FAQ

What is the maximum continuous duty cycle for the HP-01D?
Continuous operation is limited to ≤30 minutes followed by ≥15 minutes of cooling to prevent diaphragm thermal degradation and motor winding overheating.
Can the HP-01D be used with aggressive solvents like acetone or THF?
Acetone is compatible with short-term use; THF requires caution due to potential swelling of nitrile diaphragm—pre-test with minimal exposure is advised.
Is the vacuum level digitally displayed or adjustable in real time?
No. Vacuum output is controlled manually via the front-panel pressure regulator; external analog vacuum gauges must be installed for quantitative monitoring.
Does the pump include an exhaust filter or silencer?
A standard acoustic muffler is factory-installed on the exhaust port; optional activated carbon exhaust filters are available separately for solvent vapor abatement.
What maintenance intervals are recommended?
Diaphragm inspection every 500 hours of cumulative operation; replacement recommended at 1,000 hours or upon visible cracking, stiffening, or reduced flow rate.