ShoLyn LynVac-40 Dual-Stage PTFE-Lined Diaphragm Vacuum Pump

Overview

The ShoLyn LynVac-40 is a dual-stage, oil-free diaphragm vacuum pump engineered for continuous, reliable operation in chemically aggressive laboratory environments. Unlike rotary vane or water aspirator systems, the LynVac-40 employs a positive-displacement mechanism based on reciprocating PTFE-coated diaphragms and chemically inert valve assemblies. This architecture eliminates reliance on lubricating oils or cooling water—thereby preventing cross-contamination, solvent loss, or wastewater generation. Its ultimate vacuum capability of 8–10 mbar supports demanding applications such as reduced-pressure distillation, rotary evaporation of acidic or halogenated solvents, vacuum filtration of corrosive slurries, and solid-phase extraction under inert or reactive gas atmospheres. Designed to ISO 8573-1 air purity Class 0 standards for oil-free operation, the pump delivers consistent suction performance without degradation from chemical exposure.

Key Features

• Full PTFE Wetted Path: All gas-contact surfaces—including pump head, inlet/outlet ports, valves, and diaphragm coating—are constructed from or lined with high-purity polytetrafluoroethylene (PTFE), ensuring compatibility with HCl, HF, Cl₂, SO₂, NOₓ, organic acids, and halogenated solvents.
• Dual-Stage Compression Architecture: Achieves deeper base pressure and higher volumetric efficiency compared to single-stage diaphragm pumps, enabling stable vacuum maintenance across variable load conditions typical in rotary evaporators and vacuum ovens.
• Thermal Protection System: Integrated bimetallic temperature cut-off switch automatically de-energizes the motor when internal housing temperature exceeds safe operational limits; auto-resets upon cooldown to prevent thermal runaway and extend service life.
• Low-Vibration Direct-Drive Motor: 240 W induction motor coupled directly to the crankshaft eliminates belts, gears, or couplings—reducing mechanical wear, acoustic emission (<55 dB[A]), and alignment sensitivity.
• Modular Service Design: Diaphragm, valve plates, and sealing components are field-replaceable without specialized tools; optional custom configurations available for non-standard porting, materials (e.g., FFPM valve elastomers), or explosion-proof enclosures (ATEX Zone 2 compliant upon request).

Sample Compatibility & Compliance

The LynVac-40 is validated for use with gaseous media only—not intended for particulate-laden, condensable vapor-dominant, or liquid-inlet applications without upstream cold traps or particulate filters. It complies with IEC 61000-6-3 (EMC emission limits) and IEC 61000-6-2 (immunity requirements). While not certified to UL/CSA or CE for medical device integration, its material construction meets ASTM D471 resistance criteria for elastomers exposed to aggressive chemicals. For GLP/GMP-regulated workflows, the pump supports audit-ready documentation packages including Factory Acceptance Test (FAT) reports, material traceability certificates (ASTM D2990), and calibration records for integrated vacuum gauges (optional).

Software & Data Management

The LynVac-40 operates as a standalone analog device with manual vacuum regulation via integrated needle valve. No embedded firmware, touchscreen interface, or digital communication protocols (e.g., RS-485, Modbus) are included in the base configuration. However, it is fully compatible with third-party vacuum controllers (e.g., Vacuubrand VACUU·SELECT, KNF ECODRY series interfaces) and data acquisition systems using 4–20 mA or 0–10 V analog feedback signals when paired with external capacitance manometers. Optional vacuum monitoring kits include NIST-traceable Pirani or capacitance gauges with USB or Ethernet output for time-stamped logging in compliance with FDA 21 CFR Part 11 requirements.

Applications

• Vacuum-assisted filtration of corrosive reaction mixtures in pharmaceutical API synthesis
• Rotary evaporation of trifluoroacetic acid (TFA), thionyl chloride, or bromine-containing intermediates
• Reduced-pressure distillation setups handling nitric/sulfuric acid vapors in analytical sample prep
• Gas scavenging and inert atmosphere purging in Schlenk-line compatible configurations
• Concentration of environmental water samples containing chloride, sulfate, or heavy metal complexes
• Support vacuum for lyophilizers, vacuum ovens, and glovebox antechambers where oil contamination must be excluded

FAQ

Can the LynVac-40 handle condensable vapors such as acetone or ethanol?
No—condensable vapors may accumulate in the pump chamber, compromising diaphragm elasticity and valve sealing. Use with a chilled trap or condenser is mandatory for volatile organic solvent applications.
Is the pump suitable for vacuum drying of hygroscopic salts?
Yes, provided ambient humidity is controlled and inlet gas is pre-dried; however, prolonged exposure to saturated water vapor may accelerate HNBR diaphragm hydrolysis—PTFE-coated alternatives are recommended for >70% RH environments.
What maintenance intervals are required?
No scheduled oil changes or water replenishment are needed. Diaphragm replacement is recommended every 6,000–8,000 operating hours under continuous duty; valve assemblies should be inspected annually or after 2,000 hr in aggressive service.
Does the unit include a vacuum gauge?
A mechanical Bourdon-tube vacuum gauge with regulating valve is standard; digital capacitance gauges are available as factory-installed options with ±0.5% full-scale accuracy.
Can it be mounted vertically or inverted?
Mounting orientation must follow manufacturer-specified gravity-dependent drainage paths—only horizontal installation with vent ports upward is approved per safety directive 2006/42/EC.