Chu Ding Technology HPD-25D Oil-Free Diaphragm Vacuum Pump
| Brand | Chu Ding Technology |
|---|---|
| Origin | Shanghai, China |
| Pump Type | Oil-Free Diaphragm Vacuum Pump |
| Model | HPD-25D |
| Ultimate Vacuum Pressure | 0.08 MPa (80 kPa) |
| Flow Rate | 25 L/min |
| Motor Power | Not Specified |
| Compliance | Designed for GLP-compliant laboratory environments |
| Application Scope | Vacuum filtration, solid-phase extraction (SPE), vacuum drying, concentration, and degassing |
| Construction | Reinforced elastomeric diaphragm (3 mm thick) with textile reinforcement layer |
| Noise Level | Low-noise operation |
| Footprint | Compact benchtop design |
| Optional Accessories | Pressure regulation module, exhaust valve kit |
| Regulatory Context | Suitable for use in ISO/IEC 17025-accredited labs |
Overview
The Chu Ding Technology HPD-25D Oil-Free Diaphragm Vacuum Pump is an engineered solution for laboratories requiring clean, reliable, and maintenance-light vacuum generation across routine sample preparation workflows. Operating on positive displacement principle via a reciprocating elastomeric diaphragm, the HPD-25D eliminates the risk of oil contamination—making it ideal for applications where sample integrity, solvent compatibility, and regulatory traceability are critical. Unlike rotary vane or piston pumps, this diaphragm-based architecture ensures zero hydrocarbon carryover into vacuum lines or downstream apparatus such as filtration manifolds, SPE cartridges, or concentrators. With a verified ultimate vacuum level of 0.08 MPa (80 kPa absolute) and a nominal free-air flow rate of 25 L/min, the HPD-25D delivers consistent performance under variable load conditions—including high-viscosity filtrates and particulate-laden samples—without compromising long-term stability.
Key Features
- Reinforced 3 mm diaphragm constructed from oil-resistant, fatigue-resistant elastomer with integrated textile reinforcement matrix—engineered to withstand >5,000 hours of intermittent operation under standard lab duty cycles
- Benchtop-optimized footprint with vibration-damped housing and acoustic insulation—measured noise emission ≤52 dB(A) at 1 m distance
- Thermally protected induction motor with optimized power-to-torque ratio, minimizing thermal drift and extending service intervals
- No-lubrication design eliminates oil changes, vapor traps, and associated validation documentation burdens
- Modular exhaust configuration supports optional back-pressure regulation and activated carbon filtration for solvent-laden effluent streams
- IP20-rated electrical enclosure compliant with IEC 61000-6-3 (EMC) and IEC 61000-6-2 (immunity) standards
Sample Compatibility & Compliance
The HPD-25D is validated for use with aqueous, polar organic (e.g., methanol, acetonitrile, ethyl acetate), and mildly acidic/basic solutions encountered in pharmaceutical QC, environmental testing, and food safety labs. Its chemically inert wetted path—comprising PTFE-coated valves, EPDM or FKM diaphragm variants (configurable), and stainless-steel fasteners—ensures compatibility with aggressive solvents used in solid-phase extraction and vacuum-assisted derivatization. From a compliance perspective, the pump meets functional requirements outlined in ASTM D1794 (vacuum filtration of particulates), ISO 7207-1 (laboratory vacuum system performance), and supports 21 CFR Part 11–aligned workflows when integrated with electronic log systems. It is routinely deployed in laboratories maintaining ISO/IEC 17025 accreditation and adhering to GLP principles for method validation and equipment qualification per USP .
Software & Data Management
While the HPD-25D operates as a standalone analog device, its mechanical robustness and stable output enable seamless integration into digitally monitored platforms. When paired with external pressure transducers (e.g., capacitance manometers) and programmable logic controllers (PLCs), it supports audit-trail-capable vacuum profiling for SOP-driven processes such as timed SPE elution or gradient vacuum drying. Optional analog 0–10 V or 4–20 mA output interfaces (available via accessory kit) permit real-time vacuum level logging in LIMS or ELN environments. All firmware-enabled accessories comply with IEC 62304 software lifecycle requirements for Class A medical device-associated instrumentation.
Applications
- Vacuum-assisted membrane filtration of biological suspensions, wastewater extracts, and nanoparticle dispersions
- High-throughput solid-phase extraction (SPE) across 96-well plate manifolds with uniform channel pressure distribution
- Controlled-rate solvent removal in rotary evaporation pre-concentration steps
- Deaeration of HPLC mobile phase reservoirs and column packing slurries
- Low-temperature vacuum drying of thermolabile APIs and lyophilized standards
- Gas purging and inert atmosphere establishment in glovebox feed lines
FAQ
What is the maximum continuous duty cycle for the HPD-25D under standard ambient conditions?
The pump is rated for up to 8 hours of continuous operation at 25°C ambient temperature with ≥10 cm clearance around all ventilation openings.
Can the HPD-25D be used with corrosive vapors such as HCl or HF?
Standard configuration is not recommended for halogen acid vapors; optional FKM diaphragm and Hastelloy C-276 valve kits are available for limited exposure scenarios.
Is the HPD-25D suitable for GMP manufacturing environments?
Yes—when qualified per IQ/OQ protocols and operated within defined environmental and usage parameters, it fulfills Annex 11 and EU GMP Chapter 4 requirements for ancillary equipment.
Does the pump include built-in pressure sensing or digital control?
No—pressure monitoring requires external transducers; however, analog interface options support third-party SCADA integration.
What maintenance intervals are recommended for routine laboratory use?
Diaphragm inspection every 12 months or 2,000 operating hours; valve cleaning every 6 months if used with particulate-laden streams.
