Vhs® Series Solenoid Valves
VERSATILE DISPENSING TO FIT YOUR NEEDS
These solenoid valves are 2-way (2/2), normally closed, in-line valves designed for high precision dispensing applications in the nanoliter, microliter, and milliliter ranges. With an ultra fast response time, they are ideal for accurate fluid regulation and for dispensing repeatable and highly reproducible droplets. The valve's small size allows for mounting in tight spaces, even in arrays directly above a well plate. It is offered with integrated precision orifices, nozzles, screens, or with our MINSTAC® connectors to vary the outlet nozzle and connect tubing. Each valve is 100% functionally tested and is designed using materials that ensure consistent long-term performance.
features:
- Fast response time: as low as 250 μs and up to 1 kHz operation
- Compact size: less than 6 mm diameter
- Versatile dispensing: as low as 10 nL up to milliliters
- Operating pressures: up to 120 psig
- Low internal volume: as low as 30 μL
- Compatibility with common reagents, biological fluids, and select solvents.
Proven APplications:
- Lateral flow strip manufacturing
- Well plate dispensing
- Bioprinting
- Cosmetic therapies such as skin rejuvenation
- Dispensing coatings and sealants in industries such as semiconductor manufacturing
- The 062 MINSTAC outlet port allows you to thread in a variety of nozzles for rapid iterative testing of various orifice sizes or spray geometries. The MINSTAC outlet also enables system cleaning and reconfiguration to allow the same dispense valve to be used across multiple orders of magnitude of desired dispense volumes.
- The molded port outlet is designed for connection to flexible tubing, which can be connected to a precision nozzle downstream. This flexibility permits the nozzles to be placed closer than the valve center-to-center distance allows, enabling the valve to be located remotely.
- The remaining two outlet port options have a fixed, integrated nozzle or orifice, and offer the smallest dispense volume capabilities in the most compact package for miniaturized systems. Select from either hypodermic port or integrated orifice based on your desired dispense volume.
WHEN PRECISION MATTERS. CHOOSE LEE.
Precision dispense nozzles are capable of dispensing droplets as small as 10 nanoliters, as well as larger volumes, depending on the time-metered dosing setup and valve cycle times. Atomizing nozzles generate a fine mist in a hollow cone-shaped spray pattern. Designed to be compatible with our 062 MINSTAC line of products, our nozzles allow simple threaded connection into the MINSTAC outlet versions of the VHS Series valve (configurations M/M or P/M). The wetted materials enable compatibility with aggressive fluids and customized nozzles can be developed to suit unique application needs. PTFE-coated nozzles further reduce the surface energy and potential flooding at the dispense tip to improve droplet consistency between dispense events.
Three types of standard nozzles are available, including orifice, and hypodermic tube dispense nozzles suitable for droplet and time-metered dispensing:
- Orifice: integrated sapphire orifice
- Hypodermic Tube: consistent internal diameter tubing
- Atomizing: fine mist in a hollow cone at a 50° angle
A hypodermic port outlet VHS valve dispensing precision 41 μL water droplets without satellites at 15 psi.
Atomizing nozzle (bottom) and one-inch long hypodermic tube nozzle (top) shown installed into the 062 MINSTAC outlet of the valve.
FIND THE RIGHT VALVE
062 MINSTAC OUTLET
The 062 MINSTAC outlet port allows you to thread in a variety of nozzles for rapid iterative testing of various orifice sizes or spray geometries. The MINSTAC outlet also enables system cleaning and reconfiguration to allow the same dispense valve to be used across multiple orders of magnitude of desired dispense volumes.
MOLDED PORT OUTLET
The molded port outlet is designed to connect to flexible tubing, which can be connected to a precision nozzle downstream. This flexibility permits the nozzles to be placed closer than the valve center-to-center distance allows, enabling the valve to be located remotely.
HYPODERMIC PORT OUTLET
This hypodermic outlet port nozzle enables dispensing of droplets as small as 20 nanoliters, and practical time-metered dispensing up to 1 ml. With the addition of a mounting sleeve, the valve can also be manifold mounted which enables the precise injection of fluids directly into flow streams.
INTEGRATED ORIFICE OUTLET
This valve has in integrated sapphire orifice that enables droplet dispensing in the 10 nanoliter to microliter range directly from the valve itself (no need for an additional nozzle). This outlet type is available in two different styles: the simple IO-style is easiest to flush, while the long-throw-style (LT) incorporates an internal pressure compensation bladder, allowing the droplet to retain its integrity longer and travel farther.
WATCH LEE VHS VALVES IN ACTION
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