WIGGENS C920Z High-Power Chemically Resistant Diaphragm Vacuum Pump

Overview

The WIGGENS C920Z is a high-performance, oil-free diaphragm vacuum pump engineered for continuous, chemically aggressive environments. Based on the proven C900 series platform, it employs a dual-stage compression architecture to achieve both high pumping speed (75 L/min) and deep ultimate vacuum (≤ 8 mbar) without lubricating oils—eliminating contamination risk in sensitive laboratory and industrial processes. Its operational principle relies on reciprocating PTFE-reinforced diaphragms driven by a robust 370 W induction motor, delivering consistent volumetric displacement while maintaining thermal and chemical stability. Designed for demanding applications involving corrosive vapors (e.g., HCl, HF, SO₂, organic solvents), the C920Z integrates fully inert wetted components—including housing, valves, diaphragms, and gas pathways—constructed from chemically resistant polymers: polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF). The proprietary multi-layer PTFE “sandwich” diaphragm enhances mechanical resilience and fatigue resistance, extending service life under sustained cyclic loading. With an IP55-rated enclosure, it withstands dust ingress and low-pressure water jets, supporting reliable operation in QC labs, pilot plants, and GMP-compliant manufacturing suites.

Key Features

• Chemically inert fluid path: All gas-contact surfaces fabricated from PTFE and PVDF per ASTM D471 and ISO 16232 standards for chemical compatibility verification.
• Dual-stage diaphragm architecture: Enables stable vacuum generation down to 8 mbar while sustaining high flow rates across variable backpressure conditions.
• Oil-free, maintenance-optimized design: Eliminates oil changes, vapor backstreaming, and associated analytical interferences—critical for GC-MS, residual solvent analysis, and lyophilization.
• Low-noise, low-vibration operation: Acoustic emission ≤ 50 dB(A) at 1 m distance; compliant with ISO 3744 for laboratory noise control requirements.
• IP55-rated motor housing: Provides protection against dust and water splashing—suitable for installation in non-classified but humid or splash-prone environments (e.g., fume hood perimeters, reactor skids).
• High-torque 370 W motor: Ensures smooth cold-start performance and stable rotational speed under load fluctuations, reducing thermal stress on diaphragm assemblies.

Sample Compatibility & Compliance

The C920Z is validated for use with aggressive process gases and condensable vapors commonly encountered in pharmaceutical synthesis (e.g., chlorinated solvents, acetic anhydride), fine chemical distillation, and semiconductor etch residue handling. Its PTFE/PVDF material set conforms to USP Class VI biocompatibility testing protocols and meets EN 61000-6-3 (EMC emissions) and EN 61000-6-2 (immunity) requirements. While not intrinsically safe, its construction supports integration into systems compliant with ATEX Category 3G (Zone 2) when paired with appropriate pressure relief and venting configurations. It satisfies GLP documentation needs through traceable serial-numbered components and factory calibration certificates (available upon request).

Software & Data Management

The C920Z operates as a standalone unit but is fully compatible with external process control architectures. When integrated with third-party frequency inverters and vacuum transducers (e.g., capacitance manometers per ISO 20483), it enables closed-loop pressure regulation—supporting dynamic setpoint tracking within ±0.5 mbar accuracy. Optional WIGGENS-branded control modules provide analog (0–10 V / 4–20 mA) and digital (RS-485 Modbus RTU) interfaces for integration into SCADA or LIMS platforms. Audit trails, runtime logging, and motor temperature monitoring align with FDA 21 CFR Part 11 requirements when deployed with validated electronic record systems.

Applications

• Vacuum distillation of acid-sensitive compounds and high-boiling-point solvents
• Continuous degassing of reaction mixtures in jacketed glass reactors (e.g., hydrogenation, Grignard synthesis)
• Membrane filtration under controlled vacuum (e.g., sterile filtration of APIs, catalyst recovery)
• Rotary evaporation of halogenated and sulfonic acid derivatives
• Lyophilization pre-freeze and primary drying stages requiring stable sub-10 mbar conditions
• Exhaust capture in plasma etching and CVD tooling where hydrocarbon-free vacuum is mandatory

FAQ

Is the C920Z suitable for pumping condensable vapors such as acetone or methanol?
Yes—the PTFE/PVDF valve seats and diaphragms resist swelling and degradation from common organic solvents; however, continuous exposure to high-concentration saturated vapors requires optional cold trap integration to prevent condensate accumulation in the pump head.
Can the C920Z be operated continuously for 24/7 duty cycles?
Yes—its thermally optimized motor and reinforced diaphragm design support uninterrupted operation at rated load, provided ambient temperature remains ≤ 35°C and ventilation meets DIN EN 60034-6 airflow specifications.
Does the pump include built-in overload or thermal protection?
Yes—it features Class F insulation and integrated thermal cut-off switches that interrupt power at 155°C winding temperature, resetting automatically upon cooldown.
What is the recommended service interval for diaphragm replacement?
Under typical laboratory use (8 h/day, moderate vapor load), diaphragm life exceeds 12,000 operating hours; replacement is advised based on performance drift (e.g., >15% reduction in pumping speed at 10 mbar) rather than fixed calendar time.
Is the C920Z compliant with RoHS and REACH regulations?
Yes—all materials and subassemblies meet EU Directive 2011/65/EU (RoHS2) and Regulation (EC) No. 1907/2006 (REACH), with full SVHC declaration available in the technical documentation package.