Single Tube Screw Valve Eccentric Screw Rotor High Precision Dispensing Valve

Single Tube Screw Valve Eccentric Screw Rotor Dispensing Valve High Precision Micro Dispensing Valve For High Viscosity Paste Adhesive Fluid Dispensing Process

The Single Tube Screw Valve HS-300 HS-450 HS-600 HS-700 is a high-precision eccentric screw rotor dispensing valve designed for automated fluid dispensing systems. As a core volumetric quantitative dispensing component, this screw dispensing valve adopts a single-tube integrated structure and eccentric screw rotor transmission principle, completely different from traditional pneumatic dispensing valves. It delivers stable, pulse-free and consistent micro-volume dispensing output that is not affected by fluid viscosity, air pressure fluctuation or liquid level changes.

Covering four mainstream models HS-300, HS-450, HS-600 and HS-700, this high precision dispensing valve supports adjustable dispensing volume and speed, perfectly adapting to low, medium and high viscosity fluids including adhesives, pastes, fluxes and filling materials. Widely matched with automatic dispensing machines, it is the preferred solution for quantitative, uniform and high-stability fluid dispensing in automated production lines.

1. The volumetric metering and filling system of the single-tube screw valve operates on the infinite piston principle, featuring a hermetic design between the rotor and stator. The rotor rotates within the stator core to achieve precise quantitative delivery of colloids and fluids with varying viscosities, ranging from low to high.

2. At the heart of each application lies the volumetric delivery metering pumps, which guarantee pressure stability and linear pump characteristics. These pumps establish a predictable relationship between pump speed, time, and flow rate, enabling consistent material metering either through time control or pump rotational speed.

3. Whether dealing with low or high viscosity fluids, abrasion-resistant materials, or highly filled fluids that are sensitive to structural changes, dispensing accuracy remains unaffected by viscosity.

The HS Single Tube Screw Valve is widely deployed in the following processes:

• Cement & Building Materials – Silo discharge, kiln feed, clinker transfer, dry-mix mortar batching
• Mining & Mineral Processing – Ore powder conveying, tailings dosing, limestone feeding
• Chemical & Petrochemical – Polymer granule transfer, catalyst dosing, additive metering
• Food & Beverage – Flour, sugar, starch, milk powder conveying (SS316L food-grade version)
• Power Generation & Biomass – Fly-ash handling, wood-chip / pellet feeding
• Plastics & Compounding – Masterbatch, PVC powder, recycled flake dosing
• Pharmaceutical & Fine Chemicals – API powder transfer under GMP-compliant sealed conditions
• Waste Water & Environmental – Sludge dewatering discharge, lime dosing

Why Choose Our Single Tube Screw Valve HS Series

• Strict Quality Control & Stable Performance: All HS-300/HS-450/HS-600/HS-700 screw valves adopt standardized production and strict performance testing. Each valve features stable volumetric conveying, zero pulse output and long service life, avoiding frequent replacement and production shutdown losses.
• Model Diversification & Custom Adaptation: Four graded flow models cover all conventional precision dispensing scenarios. Users can select the most suitable model according to fluid type, dispensing volume and production speed, realizing precise matching of production cost and efficiency.
• Cost-effective & Low Operation Cost: Compared with servo dispensing valves and multi-tube complex valves, our single tube screw valve has a simpler structure, lower failure rate and easier daily maintenance. It greatly reduces long-term production and after-sales costs while ensuring high precision.
• Professional Technical Support: We focus on high precision fluid dispensing solutions. All products support equipment matching guidance, installation debugging guidance and after-sales technical support, helping customers quickly complete production line docking and stable mass production.
• Global Standard Compatibility: Designed in line with international automation equipment standards, compatible with mainstream dispensing system accessories in European, American and Southeast Asian markets, plug-and-play with strong universality.

Ready to Find the Right HS Model for Your Line?

Whether you need a compact HS-300 for precision dosing or a heavy-duty HS-700 for high-volume bulk transfer, our engineering team is ready to help you select, configure, and integrate the ideal Single Tube Screw Valve into your process.

Send us your material type, required capacity, conveying distance, and operating temperature — and receive a free sizing recommendation + quotation within 24 hours.