Micro Droplet Jetting Valve High Viscosity up to 500000 cps Reliable for PCB Lines

Product Overview

This compact piezoelectric jetting valve is built for ultra-small volumes and very thick fluids. It reliably deposits droplets as small as 0.5 nL and works with highly viscous materials up to 500,000 cps, making it suitable for precise dosing tasks in electronics and specialty bonding. Choose this valve when you need repeatable micro-dispensing with low material waste.

Problem

Many dispensing systems cannot accurately place extremely small droplets or handle very viscous adhesives, causing poor line yield and material overuse. In precision assembly, incorrect droplet size or missed shots quickly lead to failures on fine-pitch parts.

Cause

Conventional valves either lack the control resolution to form sub-nanoliter droplets or have fluid paths that obstruct when used with high-viscosity media. The result is inconsistent droplet volume, splatter, or frequent clogging that interrupts production.

Solution

This piezoelectric valve uses a precisely timed piezo pulse combined with a smooth fluid path to form consistent micro-droplets even with thick fluids. The valve design minimizes dead volume and lets you adjust pulse parameters to tune droplet volume.

Benefits include:

Reliable micro-drops down to 0.5 nL
Stable operation with viscous fluids up to 500,000 cps
Lower material usage and fewer rejects
Simplified maintenance with replaceable nozzle inserts

Application

• Fine electronics dispensing: adhesive dots for micro-SMD, connector bonding, and sensor assembly.
• Optical assembly: precise placement of index-matching gels or small adhesive spots.
• Medical device prototypes: applying tiny amounts of medical-grade adhesives or coatings.
• R&D and pilot lines: testing different viscosities and droplet sizes with minimal sample use.

How It Works 

Conclusion: precise droplet formation comes from quick piezo pulses and controlled fluid feed. A short, rapid piezo stroke creates a pressure wave that propels a micro-droplet through the nozzle. The valve’s fluid path and nozzle geometry maintain a stable meniscus, and adjusting pulse width or amplitude changes droplet volume. For viscous fluids, increased inlet pressure and warm-up (within allowed temperature) improve flow consistency.

How To Choose 

Conclusion: match the valve to your droplet size, fluid viscosity, and cycle speed. Steps:

Confirm target droplet volume and pick the nozzle size closest to that range.
Verify your fluid’s viscosity at process temperature; provide the spec sheet for a sample test if >100,000 cps.
Check required cycle rate — select this model for moderate-to-high throughput up to the stated frequency.
Decide wetted material based on chemical compatibility (316L for general use; PTFE or ceramic for aggressive fluids).
Plan pressure supply and control hardware; stable pressure yields best repeatability.
Arrange a short on-site or lab trial for final tuning when using specialty fluids.

FAQ

Q1: Can this valve handle 500,000 cps fluid reliably?

A1: Yes, it can handle up to 500,000 cps in many cases; final confirmation depends on fluid makeup and temperature. We recommend a trial sample to verify performance.

Q2: What is the smallest drop I can expect in production?

A2: The valve can produce drops down to 0.5 nL; in production you should tune nozzle size, pulse, and pressure for stable output.

Q3: How often should the nozzle be serviced or replaced?

A3: Service intervals depend on fluid abrasiveness and operating conditions. For non-abrasive fluids, nozzles often last many thousands of cycles; abrasive materials shorten life and require spare nozzles.

Q4: Do you support testing with customer fluids?

A4: Yes — we run application trials and share results. Send a fluid data sheet and process temperature for fastest evaluation.

Q5: Is integration with common robot mounts supported?

A5: Yes — the valve uses a compact flange for easy mounting; provide your robot interface details for fit confirmation.