Kashiyama NeoDry-7G Oil-Free Diaphragm Vacuum Pump

Overview

The Kashiyama NeoDry-7G is an oil-free diaphragm vacuum pump engineered for precision laboratory environments where contamination-free operation, low noise, and long-term reliability are critical. Utilizing a multi-stage elastomeric diaphragm mechanism with PTFE-coated valves and corrosion-resistant internal components, the NeoDry-7G achieves ultimate vacuum levels down to 5.0 Pa (gas ballast valve closed) and delivers a maximum pumping speed of 110 L/min at atmospheric inlet pressure. Its dry, hydrocarbon-free compression principle eliminates the risk of oil backstreaming—making it suitable for applications in analytical instrumentation (e.g., mass spectrometry sample introduction, GC-MS foreline support), vacuum drying ovens, freeze dryers, and semiconductor R&D clean benches. Designed and manufactured in Japan under Kashiyama’s stringent quality control protocols, the pump conforms to IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) standards, ensuring stable integration into regulated lab infrastructures.

Key Features

• Oil-free diaphragm technology ensures zero hydrocarbon contamination—critical for trace analysis, surface science, and pharmaceutical process development.
• Ultra-low operational noise (≤45 dB[A] at 1 m) enables deployment in shared laboratory spaces, open-plan research facilities, and ISO Class 5–7 cleanrooms without acoustic shielding.
• Integrated RS485 serial interface (Modbus RTU protocol) supports bidirectional communication for remote monitoring of real-time parameters—including motor current, internal temperature, and accumulated runtime—as well as variable-speed control via external PLC or LabVIEW-compatible DAQ systems.
• Optional gas ballast module increases water vapor tolerance by up to 10%, extending service intervals when handling humid or solvent-laden exhaust streams—particularly beneficial for rotary evaporation condensate recovery and lyophilization pre-vacuum stages.
• IEC 60320 C14 power inlet enables universal compatibility with international power cords and certified lab-grade surge protection units; auto-ranging input (AC 100–240 V, 50/60 Hz) eliminates need for voltage selectors or transformers.
• Robust mechanical design includes reinforced aluminum alloy housing, dynamically balanced motor assembly, and vibration-damped feet (≤8 μm p-p), minimizing transmission to sensitive optical tables or microbalance enclosures.

Sample Compatibility & Compliance

The NeoDry-7G is compatible with non-reactive, non-particulate, and non-explosive gases and vapors typical in academic and industrial laboratories—including ambient air, nitrogen, argon, water vapor (up to 135 g/h), and low-concentration organic solvents (e.g., methanol, acetone, ethyl acetate). It is not rated for chlorine, ammonia, hydrogen sulfide, or halogenated hydrocarbons without prior consultation with Kashiyama technical support. The pump meets CE marking requirements under the EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. While not intrinsically safe, its design supports integration into GxP-compliant workflows when paired with validated control software that maintains audit trails per FDA 21 CFR Part 11 requirements.

Software & Data Management

The RS485 interface allows seamless integration with third-party laboratory information management systems (LIMS) and supervisory control platforms. Standard Modbus register mapping provides access to operational status flags (e.g., overtemperature, overload, communication timeout), setpoint registers for speed adjustment (0–100% of nominal RPM), and cumulative runtime counters. Optional Kashiyama PumpLink™ configuration utility (Windows-based) enables firmware updates, calibration offset storage, and event-log export in CSV format—supporting GLP documentation practices. No proprietary drivers are required; native support exists for common SCADA frameworks including Ignition, Siemens SIMATIC WinCC, and National Instruments SystemLink.

Applications

• Vacuum manifold systems for parallel sample preparation in analytical chemistry labs.
• Foreline backing for turbomolecular and diffusion pumps in UHV surface analysis chambers (XPS, AES).
• Controlled-atmosphere glovebox evacuation and inert gas purging cycles.
• Continuous vacuum supply for membrane filtration rigs and solvent recovery traps.
• Pre-evacuation and hold-vacuum phases in freeze-dry cycle development per USP and ISO 22042.
• Environmental testing chambers requiring stable sub-10 Pa base pressure with minimal thermal drift.

FAQ

Is the NeoDry-7G suitable for continuous 24/7 operation?
Yes—its brushless DC motor, thermally optimized diaphragm stack, and sealed-for-life bearings are rated for uninterrupted duty cycles exceeding 10,000 hours under nominal load conditions.
Can the pump handle acidic or alkaline vapors?
No. Exposure to corrosive gases (e.g., HCl, HF, NH₃) will degrade elastomeric seals and valve materials. Consult Kashiyama’s chemical compatibility chart or request application-specific validation prior to use.
Does the RS485 interface support Ethernet or USB conversion?
Yes—standard RS485-to-Ethernet gateways (e.g., Moxa EDS-205A) and USB-RS485 adapters (FTDI-based) are fully interoperable; no custom firmware is needed.
What maintenance is required?
Annual inspection of diaphragm integrity and valve seating is recommended; replacement kits (diaphragm set, valve plate, gaskets) are available as genuine Kashiyama parts with serialized traceability.
Is N₂ purge capability built-in or optional?
An optional N₂-purged variant (NeoDry-7G-N2) is available ex-factory, featuring dual-seal motor housing and dedicated inert gas inlet ports for oxygen-sensitive applications.