Product Description
The Festo VTOE dispense head is a ready-to-install dosing solution for non-contact dispensing and jetting of liquid media down to the microlitre range. Featuring a compact 9 mm grid dimension and a media-separated design with diaphragm technology, it ensures maximum dosing precision (CV <1%) and excellent chemical resistance for sensitive and aggressive liquids in laboratory automation and industrial dosing applications.
Key Features & Advantages:
Maximum Dosing Precision: Provides typical dosing precision of less than 1% CV for volumes greater than 5 µl and less than 2.5% CV for volumes between 1-5 µl, enabling highly accurate and repeatable liquid handling.
Compact 9 mm Grid Dimension: Features an ultra-compact 9 mm grid, allowing high-density installation in space-constrained laboratory devices and automation systems. Individual stacking dimensions greater than 9 mm are available on request.
Media-Separated Design: Utilises media-separated diaphragm valves that prevent cross-contamination and ensure optimal rinsing capability, making it ideal for sensitive and aggressive liquids.
Multiple Channel Configurations: Available in single-channel (VTOE) and 8-channel (VTOE-8) versions with individual valve control, enabling flexible throughput from single-sample processing to high-volume microplate filling.
Three Nozzle Size Options: Offers three standard dosing needles with internal diameters of 0.32 mm, 0.6 mm, and 1.0 mm, delivering water flow rates of 370 µl/s, 1300 µl/s, and 2000 µl/s respectively at maximum operating pressure.
Dual Material Variants: Available with transparent polycarbonate (PC) manifold duct plate for visual channel inspection, or PEEK (polyether ether ketone) manifold duct plate for maximum chemical resistance against aggressive media.
Low Internal Volume: Features a small internal volume of only 113 µl per valve with fluid connections, making it easy to rinse and change between different liquid media.
Low Operating Pressure: Operates at 0 to 0.5 bar (0 to 7.25 psi), ensuring safe handling of sensitive liquids and simple system integration.
24V DC Electrical Actuation: Powered by 24V DC with ±10% permissible voltage fluctuation, consuming only 1.8 W per valve with 50% duty cycle (max. 1 s on-time) for 8-channel block mounting.
Fast Switching Response: Delivers switching time-on of 7 ms and switching time-off of 2 ms, with maximum switching frequency of 4 Hz for high-throughput dosing applications.
High Chemical Resistance: Media-contacting materials include high-alloy stainless steel (1.4301), PEEK, ETFE, and FFPM/FPM seals, providing excellent resistance against a wide range of aggressive liquids.
Corrosion Resistance Class 0: Rated CRC 0 with no corrosion stress and LABS (PWIS) conformity to VDMA24364-B2-L, suitable for clean laboratory environments and paint shop applications.
Wide Temperature Range: Operates with media temperature from 5°C to 50°C and ambient temperature from 5°C to 40°C, with storage temperature from -20°C to 70°C.
Low Protection Class: Rated IP30 in assembled state, indicating protection against solid objects >2.5 mm but not against water ingress – suitable for controlled indoor environments.
RoHS Compliant: Manufactured in compliance with RoHS directive, meeting environmental standards.
Technical Specifications:
Brand: Festo
Series: VTOE (VTOE / VTOE-8)
Product Type: Dispense Head / Dosing Head
Grid Dimension: 9 mm
Number of Valve Positions: 1 (VTOE) or 8 (VTOE-8)
Valve Function: 2/2-way, normally closed, monostable
Reset Type: Mechanical spring
Sealing Principle: Soft
Piloting Type: Direct
Operating Pressure: 0 bar to 0.5 bar (0 MPa to 0.05 MPa, 0 psi to 7.25 psi)
Nominal Size (Valve): 0.8 mm
Nozzle Options (Nominal Width): 0.32 mm (D7) / 0.6 mm (D8) / 1.0 mm (D9)
Nozzle Length: 30 mm
Nozzle Material: High-alloy stainless steel (1.4301)
Internal Volume: 113 µl per valve (with fluid connections)
Water Flow Rate (at max. operating pressure): 370 µl/s (D7), 1300 µl/s (D8), 2000 µl/s (D9)
Minimum Dosing Volume: 1 µl (D7), 3 µl (D8), 5 µl (D9)
Typical Dosing Precision: <1% CV (Volumes >5 µl), <2.5% CV (Volumes 1-5 µl)
Maximum Switching Frequency: 4 Hz
Switching Time On: 7 ms
Switching Time Off: 2 ms
Operating Voltage DC: 24 V
Permissible Voltage Fluctuation: ±10%
Electrical Power Consumption: 1.8 W per valve
Duty Cycle (8-channel block mounting): 50% (max. switch-on time 1 s)
Degree of Protection: IP30 (assembled state)
Corrosion Resistance Class (CRC): 0 – No corrosion stress
LABS (PWIS) Conformity: VDMA24364-B2-L
Ambient Temperature: 5°C to 40°C
Media Temperature: 5°C to 50°C
Storage Temperature: -20°C to 70°C
Fluid Connection: UNF1/4-28 (fitting for tubing 3 mm OD included)
Electrical Connection (8-channel): 9-pin Sub-D plug
Electrical Connection (1-channel): 2-wire cable, open end, 0.15 m length, AWG28
Type of Mounting: Via through-hole for M3 screw or via female thread and centring sleeve
Manifold Block Material Options: Polycarbonate (PC) / Polyether ether ketone (PEEK)
Valve Housing Material Options: PPS or PEEK
Diaphragm and Seal Material Options: FPM or FFPM
Media-Contacting Materials: ETFE, PEEK, PC (PC variant), PPS (PC variant), FFPM (PEEK variant), FKM (PC variant), high-alloy stainless steel
Product Weight: 18 g (1-channel) / 220 g (8-channel)
Intended Use: Installation in laboratory devices for dispensing liquid media – NOT suitable for aspiration of liquids or direct food contact
Mounting Position: Any
Pollution Degree: 2
Vibration Resistance: Severity level 2 to FN 942017-4 and EN 60068-2-6
Shock Resistance: Shock test with severity level 2 to FN 942017-5 and EN 60068-2-27
Material Note: RoHS-compliant
Type Code Guide:
VTOE – Dispense head
Valve positions – (Blank) = 1 valve position / 8 = 8 valve positions
Output connection (Dosing needle) – D7 = 0.32 mm, D8 = 0.6 mm, D9 = 1.0 mm
Input connection – T3 = For tubing 3 mm OD
Valve function – M22C = 2/2-way, normally closed
Nominal width – 08 = 0.8 mm
Diaphragm/seal material – F = FFPM, V = FPM
Valve housing material – P = PEEK, S = PPS
Manifold block material – P = PEEK, PC = Polycarbonate
Electrical connection – S = Individual connection with flying leads (1-channel) / M = Multi-pin electric (8-channel)
Ideal For:
Non-contact dispensing and jetting of liquid media in microlitre range, laboratory automation devices, producing dilutions, adding nutrient solutions, dosing reagents, preparing samples, dispensing liquid media to microtiter plates (96/384-well), pharmaceutical research, biotechnology, medical diagnostics, chemical analysis, genomics and proteomics applications, high-throughput screening, and processing of sensitive and aggressive liquids.
Why Choose Festo VTOE Dispense Head?
Engineered by Festo with dosing precision <1% CV, compact 9 mm grid for high-density installation, media-separated diaphragm design preventing cross-contamination, dual material variants (PEEK for aggressive media or transparent PC for visual inspection), three nozzle size options (0.32-1.0 mm) with flow rates from 370 to 2000 µl/s, low 0.5 bar operating pressure, 24V DC actuation with 1.8 W consumption, fast 7 ms/2 ms switching response, up to 4 Hz switching frequency, 1-5 µl minimum dosing volume, low 113 µl internal volume for easy rinsing, CRC 0 corrosion resistance, LABS conformity, and German engineering quality, this dispense head ensures precise, reliable, and contamination-free liquid handling for demanding laboratory and industrial dosing applications.
Tags:
#Festo #VTOE #DispenseHead #DosingHead #LiquidHandling #NonContactDispensing #DiaphragmValve #MicroliterDosing #LaboratoryAutomation #CRC0 #LABSConformant #HighThroughput #MalaysiaSupplier
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