Single Tube Screw Valve Servo Motor Drive Volumetric Fluid Transportation HS 300 HS 450 HS 600 HS 700

Volumetric Fluid Transportation Servo Motor Driven Single Tube Screw Valve HS 300 HS 450 HS 600 HS 700 High Precision Quantitative Dispensing Valve for SMT PCB Industrial Fluid Application

Machine Introduction

Single Tube screw valves are precision volumetric metering and conveying products, suitable for a variety of high-precision quantitative conveying occasions. Single-component screw pump adopts spiral structure design, screw and stator are self-sealing design, screw rotates in the stator cavity to realize quantitative conveying function. The conveying process does not produce shear effect on the medium, and does not affect the characteristics of the medium. At the same time can be reversed through the motor suction back, easy to realize the adhesive break, the perfect solution to the dispensing process of dripping, pulling the problem.

1.Volumetric fluid transportation.

2.Servo motor drive.

3.Eccentric spiral rotor suitable for micro-application.

4.Stator with excellent corrosion resistance.

5.Lightweight dispensing valve for micro-application dispensing applications.

6. Suitable for low to high viscosity gels.

7.Stable glue output and high dispensing accuracy.

8.No dripping or pulling problems.

Working Principle

1. The volumetric metering and filling system of the single tube screw valve (single part screw valve) is based on the infinite piston principle, with a hermetic design between the rotor and stator, and the rotor rotating inside the stator core to achieve the quantitative delivery of the colloid for fluids of low to high viscosity of the liquid.

2. The core of each application is based on volumetric delivery metering pumps, which can ensure pressure stability and the linear characteristics of the pump, determining the relationship between pump speed, time and flow rate, so that constant material can be metered either by time or by the pump's rotational speed.

3. From low to high viscosity, abrasion resistant and highly filled fluids that are sensitive to structure, dispensing is not affected by viscosity.

Stator and Rotor for Screw Valves

1. The stator core is made of FFKM, FKM, NBR, optional. The stator housing is made of AL 7075 and the surface is fine ground after rotary milling to increase the high surface finish. The surface is fine-milled after cyclone milling to increase the high surface finish. The stator core and stator housing are die-cast to ensure the accuracy of the stator and rotor fit.

2. The material of the drive shaft is SUS304, the surface is fine grinding after CNC lathe machining to increase the high surface finish (0.40). The flexible shaft is wrapped with perfluoroelastomer, which ensures that the screw will not be suffocated with the high speed rotation of the drive rod (the maximum speed can be up to 2.2 revolutions/second).

3. The material of the screw is imported stainless steel, the surface of which is fine ground after cyclone milling and then plated with titanium to increase the high surface finish and wear resistance. Ceramic material is also available.

4. The combination of rotor and stator forms a sealed space, and the motor continuously extrudes glue particles by turning the rotor to form a stable spitting effect.

Specification

Product Features and Advantages

High glue dispensing precision
Adopting servo motor drive and eccentric screw rod feeding, so that the glue adhesive can be continuously and stably output.

Wide range of glue viscosities and spitting volumes
Adjustment of motor speed and gas pressure can be used to dispense different glue viscosities and quickly change the amount of glue spit.

No dripping and pulling of glue
The motor reverses and sucks back, easily solving the problem of dripping and pulling of glue.

Great adaptability of stator
The stator is resistant to medium corrosion and has a long service life, which greatly reduces the user's overall cost of ownership.

Volumetric metering
True volumetric conveying, the flow rate is not affected by pressure changes.

High output pressure
Single pump output pressure ≥ 20bar

Application Scenarios

Electronics & SMT Assembly — Dispensing solder paste, conductive adhesives, underfill materials, and conformal coatings on PCBs and semiconductor packages. The valve's precise volumetric control ensures uniform dot placement on fine-pitch components, reducing bridging, voids, and rework.

Automotive Manufacturing — Applying structural adhesives, thread lockers, gasketing materials, and thermal interface compounds during engine, transmission, and electronic module assembly. Consistent bead volume improves bond strength and seals reliability under harsh operating conditions.

Medical Device Production — Metering biocompatible adhesives, UV-curable resins, and lubricants for catheters, syringes, diagnostic cartridges, and implantable components. The clean, repeatable dispense profile supports validated manufacturing processes and regulatory compliance.

Industrial Assembly & Packaging — Sealing, bonding, and potting applications across appliances, sensors, connectors, batteries, and consumer goods. The valve handles both automated in-line production and semi-automatic bench-top dispensing setups with equal reliability.

New Energy & Battery Manufacturing — Dispensing thermal paste, structural adhesives, and electrolyte materials in battery cell and module assembly, where material volume accuracy affects thermal performance and cell longevity.

Why Choose Our Single Tube Screw Valve

True Volumetric Accuracy — Unlike time-pressure dispensers that suffer from material viscosity drift and air-pressure fluctuations, our servo motor driven screw valve displaces material by fixed volume per rotation. This means dispense consistency holds across long production runs, material batch changes, and ambient temperature shifts — reducing material waste and defect rates.

Wide Viscosity Compatibility — The single-tube screw architecture handles fluids from water-like solvents to highly filled pastes and greases without clogging or pulsation. Abrasive fillers, shear-sensitive materials, and thixotropic compounds are all managed smoothly, making one valve suitable for multiple product lines.

Programmable & Repeatable — Every dispense parameter — rotation speed, direction, number of rotations, acceleration, and suck-back — is digitally controlled through the servo drive. Recipes can be saved, recalled, and transferred between machines, ensuring identical results whether you run one unit or a hundred on the production floor.

Clean, Drip-Free Dispensing — Integrated suck-back and reverse-rotation functionality eliminate stringing, dripping, and tailing after each dispense cycle. This keeps workpieces clean, reduces post-dispense cleanup, and prevents contamination on sensitive electronic assemblies.

Modular & Easy to Maintain — The single-tube design minimizes wetted parts, making disassembly, cleaning, and material changeover fast and straightforward. Wear components are standardized and readily available, keeping downtime and maintenance costs low over the valve's service life.

Scalable Model Range — With HS-300, HS-450, HS-600, and HS-700 options, you select the flow capacity that matches your application rather than overpaying for oversized equipment or struggling with an under-sized valve. Each model shares the same control interface and mounting footprint, simplifying line integration and operator training.

Ready to Find the Right Configuration for Your Process?

Every dispensing application has its own material, volume, and throughput requirements — and selecting the right single tube screw valve configuration early can save significant time, material, and rework cost down the line.

Share your fluid type, target dispense volume, production speed, and existing automation setup with our engineering team. We will help you match the correct HS-series model, recommend control parameters, and — where needed — arrange sample dispensing tests using your actual material so you can verify accuracy and repeatability before committing to production.

Tell us about your dispensing challenge, and let us work out a solution tailored to your line.