VIGOUR>> VEFS1 Series Flow Switch SS 316L VAR material
In high-purity and mission-critical process environments, flow monitoring is more than a control function-it is a fundamental safeguard for product quality, system integrity, and operational safety. The VIGOUR VEFS1 Series Flow Switch is purpose-engineered to deliver highly reliable flow detection in applications where contamination, leakage, or unstable flow conditions are unacceptable.
From semiconductor fabrication and pharmaceutical processing to advanced analytical instrumentation, the VEFS1 provides consistent, repeatable performance-ensuring processes run with precision, confidence, and long-term stability.
Technical Date
- Source pressure: vacuum to 3500 psig (241 bar)
- Flow trip reference points: 25/50/100 slpm (N2 at 100 psig)
- Accuracy: ±10%
- Installation orientation: Vertical within 8° and inlet port at the bottom
- Operating temperature: -10~175°F(-23~80°C)
- Body: SS 316L VAR
- Inlet / Outlet: 1/4" tube weld / VFS fitting
- Leakage (Outboard): 2x10^-10 mbar l/s He
- Type: SPDT, 3 wire /2 position
- Power: 30VDC /3W max
- Switching current: 0.2A max
- Carrying current: 0.5A max
- Initial contact resistance: 0.1 Ohm max
- Cable length: 3m
- Wire gauge: 24AWG
Product feature
The flow-through design completely eliminates dead zones and unswept areas in the flow path, ensuring that gas passes through without residue or contamination.
The SS316L secondary melting process minimizes the generation and adsorption of particulate matter, meeting the requirements of ultra-high purity environments such as those used in semiconductor manufacturing.
With a wide design pressure range, from vacuum to 241 bar, it can stably handle various complex operating conditions from vacuuming to high-pressure delivery, demonstrating strong system adaptability.
It features a built-in magnetic float and reed switch mechanism. When the flow rate exceeds the preset value, it accurately and clearly provides a switching signal, enabling timely response to safety issues such as abnormal pipeline flow.
Flexible Configuration, Simplified Integration
The VEFS1 Series supports multiple industry-standard connection options to accommodate diverse system designs:
- VFS male (MVA)
- VFS female (FV4)
- Tube weld (TWA)
Consistent dimensional profiles across configurations simplify system layout, replacement, and retrofitting-reducing downtime and installation complexity.
Clear Ordering, Confident Selection
Each VEFS1 unit is specified through a clear and structured part-numbering system that defines material, connection type, and flow set point.
- Example:
VEFS1-SLV-MVA-MVA-100
→ 316L VAR construction, VFS male inlet/outlet, 100 slpm flow trip point
Maintain Purity. Protect Processes. Ensure Reliability.
Choose the VIGOUR VEFS1 Flow Switch to enhance process integrity, safeguard critical operations, and achieve dependable flow monitoring-where advanced engineering meets real-world performance.
