JRY-ZK Corrosion-Resistant Diaphragm Vacuum Pump

Overview

The JRY-ZK Corrosion-Resistant Diaphragm Vacuum Pump is an oil-free, chemically inert vacuum source engineered for reliable operation in demanding laboratory and pilot-scale applications involving aggressive vapors and condensable gases. Utilizing a PTFE-coated diaphragm, stainless steel valves, and chemically resistant housing materials, it operates on positive displacement principles—where reciprocating motion of the elastomeric diaphragm creates cyclic volume changes to draw in and expel gas without internal lubrication or oil contamination. This architecture eliminates risk of sample cross-contamination and ensures compliance with ISO 8573-1 Class 0 air purity requirements for instrument-grade vacuum and compressed air generation. Designed for continuous duty in analytical chemistry, pharmaceutical process development, and environmental sample preparation, the pump delivers stable vacuum performance across variable load conditions—particularly critical during extended filtration, rotary evaporation, or vacuum concentration protocols where pressure stability directly impacts reproducibility.

Key Features

• Chemical resistance achieved via PTFE-coated diaphragm, EPDM or Viton® valve assemblies, and corrosion-resistant aluminum alloy housing—validated for exposure to HCl, HNO₃, acetone, methanol, ethyl acetate, and other common organic and inorganic solvents.
• Thermally protected motor with auto-resetting thermal cutoff: monitors stator temperature in real time; interrupts power at ≥110 °C and resumes operation automatically once surface temperature falls below 85 °C—enabling unattended overnight runs without manual intervention.
• Low-noise operation (<50 dB[A] at 1 m distance) achieved through optimized vibration-damping mount design, balanced crankshaft mechanism, and acoustic enclosure integration—suitable for shared lab environments and laminar flow hoods.
• Dual-function capability: provides both high-stability vacuum (2 mbar ultimate) and regulated compressed air output (up to 0.5 MPa), eliminating need for separate air compressors in SPE manifold setups or vacuum-assisted drying systems.
• Modular accessory interface: accepts optional inline corrosion-resistant vacuum regulators, sintered stainless steel particulate filters (pore size: 5 µm), and condensate traps—supporting GLP-compliant documentation of filter replacement intervals and pressure setpoint logs.

Sample Compatibility & Compliance

The JRY-ZK is compatible with aqueous, acidic, basic, and moderately polar organic solvent systems encountered in solid-phase extraction (SPE), Büchner funnel filtration, reduced-pressure distillation, and lyophilization pre-concentration. It meets IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity to electrostatic discharge and RF fields). While not certified to UL/CSA standards, its construction adheres to general safety principles outlined in EN 61010-1 for laboratory electrical equipment. For regulated environments (e.g., FDA-regulated QC labs), optional data logging accessories enable audit-ready records aligned with 21 CFR Part 11 requirements when paired with validated software platforms.

Software & Data Management

The base unit operates as a standalone analog device with mechanical vacuum regulation. However, it supports digital integration via optional 0–10 VDC or 4–20 mA analog input/output modules for external PID control loops. When connected to third-party LabVIEW™ or Python-based SCADA systems, real-time monitoring of motor current draw (proxy for load condition), runtime hours, and thermal event history becomes feasible. Firmware-upgradable versions (JRY-ZK-DL) include USB-C interface and native Modbus RTU protocol support—facilitating traceable vacuum setpoint adjustments and automated shutdown triggers based on pressure deviation thresholds.

Applications

• Vacuum-assisted gravity filtration of corrosive filtrates (e.g., HF-digested soil extracts, chlorinated solvent washes)
• Rotary evaporation of acid-labile compounds under controlled sub-atmospheric pressure
• High-throughput SPE cartridge conditioning and elution using programmable vacuum manifolds
• Pre-concentration of environmental water samples prior to GC-MS analysis
• Generation of clean, oil-free compressed air for pneumatic actuators in automated liquid handlers
• Supporting vacuum desiccation of hygroscopic APIs in cGMP pilot batches

FAQ

Is the JRY-ZK suitable for use with hydrofluoric acid (HF) vapors?
No—while PTFE components resist most mineral acids, HF attacks silica-based fillers in standard PTFE formulations and compromises diaphragm integrity. For HF applications, consult factory for custom FEP-lined variants.
Can this pump be used continuously for 24/7 operation?
Yes—rated for continuous duty cycle with thermal protection and sealed ball bearings rated for >10,000 hours MTBF under nominal load conditions (≤40 L/min, 5–15 mbar operating range).
Does it meet ISO 8573-1 Class 0 for compressed air purity?
Yes—the oil-free diaphragm mechanism inherently satisfies Class 0 (zero oil content) for particulate, water, and oil aerosol per ISO 8573-1:2010 when operated within specified ambient temperature and humidity limits.
What maintenance intervals are recommended?
Diaphragm replacement every 6,000–8,000 operating hours; valve assembly inspection every 2,000 hours; particulate filter replacement after each 50 SPE plates processed or quarterly—whichever occurs first.
Is calibration certificate included with shipment?
No—factory verification report (including ultimate vacuum, pumping speed, and noise level test data) is provided. NIST-traceable calibration services are available upon request at additional cost.