Disperser: Types, Specifications & Price Guide 2026 | POLYC
Disperser: Types, Specifications & Price Guide 2026
Selecting the right industrial disperser (high-speed dissolver) is the cornerstone of any fluid processing, paint, coating, ink, adhesive, or chemical manufacturing line. When specifying dispersion machinery, plant engineers face a direct practical question: "How do I choose the right disperser type, motor power, disc diameter, and mounting configuration to achieve ideal laminar donut flow without splashing, air foaming, or overpaying for unneeded features?" Choosing the wrong disperser configuration leads to incomplete powder wetting, agglomerate settlement at tank bottoms, excessive batch cycle times, and heavy motor overloads. This practical specification and pricing guide compares standalone hydraulic high-speed dispersers, vacuum dispersing units, and platform-mounted multi-tank systems to help you select the exact equipment required before requesting a factory quote. (Want to compare Chinese machinery manufacturers instead? See our companion Top Chinese High Shear Disperser Manufacturers Guide.)
Quick Summary: Matching Disperser Types to Processing Requirements
- Standard Batch Fluid Wetting (30L – 3,000L): Choose a Hydraulic High Speed Disperser (PDM Series). Single or dual-shaft hydraulic lifting unit operating at tip speeds of 20–25 m/s, creating the classic "donut effect" for paints, primers, inks, and general chemical slurries.
- De-Aeration & Bubble-Free Formulations (50L – 2,000L): Choose a Vacuum Dispersing Machine (PVM Series). Features a sealed hydraulic vacuum cover (≤ -0.08 MPa) that eliminates micro-bubbles, prevents solvent flash-off, and avoids skinning during high-speed shear.
- Large-Scale Multi-Tank Plant Operations (500L – 15,000L): Choose a Platform-Mounted Disperser (PSD Series). Installed on structural steel mezzanines with a 360-degree rotating column to service multiple stationary mixing tanks in rotation, maximizing plant throughput per square meter.
Disperser Types: Specifications & Investment Comparison
The table below compares the 3 core industrial disperser types engineered by POLYC, broken down by mechanical configuration, disc diameter, speed range, batch capacity, specific processing features, and relative price tiers:
| Model Series | Configuration & Lift Type | Disc Diameter Range | Speed Range (rpm) | Working Capacity (L) | Key Processing Features | Relative Price Tier |
|---|---|---|---|---|---|---|
| PDM Series | Standalone Electro-Hydraulic Lift (Single or Dual Shaft) | Φ150 – Φ600 mm | 0 – 1450 rpm (VFD) | 30 – 3,000 L | Atmospheric operation; serrated Cowles disc; pneumatic or manual mobile vessel clamping; optional dual shaft for heavy solids. | Entry-Level to Mid-Range |
| PVM Series | Vacuum Cover Integrated with Hydraulic Lift Column | Φ200 – Φ500 mm | 0 – 1450 rpm (VFD) | 50 – 2,000 L | Deep vacuum sealing (≤ -0.08 MPa); observation sight glass & spotlight; prevents air foaming, oxidation, and solvent evaporation. | Mid-to-High Tier |
| PSD Series | Mezzanine Platform Mount with 360° Swivel Rotation | Φ300 – Φ800 mm | 0 – 1000 / 1450 rpm | 500 – 15,000 L | Multi-vat rotation (services 2 to 4 fixed tanks); heavy motor power (18.5kW – 90kW); direct floor/platform mounting for massive tonnage. | High-Capacity Industrial Tier |
Decision Guide: How to Choose the Right Disperser Architecture
Use this four-step engineering evaluation to select the most reliable, cost-effective disperser setup for your specific fluid chemistry:
Standard Paints, Inks & Chemical Dissolution (Atmospheric)
If you are producing architectural emulsion paints, industrial primers, general printing inks, or dissolving solid resins in mobile stainless steel tanks where air entrainment is manageable with standard defoamers.
Air-Sensitive Media, Clear Coats & De-Aerated Pastes
If your formulation contains volatile organic solvents that flash off under atmospheric mixing, or if you produce high-grade clear coats, electronic adhesives, or bubble-sensitive sealants requiring total negative-pressure degassing.
High-Tonnage Commercial Facilities (Multi-Vessel Operation)
If your plant runs continuous multi-ton batches (500L to 15,000L per tank) and you want a single heavy disperser to service 2, 3, or 4 fixed floor tanks in alternating cycles on a mezzanine platform.
High-Solid Pre-Grinding Slurries for Bead Mills
If the disperser serves as the primary wetting and pre-grinding station to break down large solid clumps before feeding slurry into a horizontal wet bead mill, high peripheral tip speed (22–25 m/s) is required.
Engineering Breakdown of POLYC Industrial Dispersers
1. PDM Series Hydraulic High Speed Disperser (1.5 kW to 90 kW)
The PDM series is the universal workhorse of the liquid processing industry. Equipped with a precision-balanced solid stainless steel shaft and a serrated Cowles sawtooth disc, it accelerates fluid to 20–25 m/s tip speeds, creating a deep central vortex that draws floating dry powders directly into the blade's high-shear teeth. Its integrated hydraulic lifting cylinder raises the mixing head smoothly, allowing operators to change mobile tanks within seconds.
2. PVM Series Vacuum Dispersing Machine (Vacuum ≤ -0.08 MPa)
The PVM series incorporates a reinforced dished vacuum cover mounted directly to the hydraulic lifting mast. When lowered onto the mobile vessel, silicone/fluororubber seals form a hermetic chamber under deep vacuum (≤ -0.08 MPa). High-speed dispersion under negative pressure forces entrapped air bubbles to expand and rupture instantly, eliminating micro-voids in high-grade clear coats, electronic pastes, and dental compounds while preventing solvent vaporization.
3. PSD Series Platform-Type Rotating Disperser (500L to 15,000L)
Engineered for high-capacity industrial plants, the PSD series is bolted to a mezzanine steel platform or heavy reinforced concrete foundation. Its main column features a 360-degree hydraulic or mechanical swivel mechanism, enabling one high-powered disperser (up to 90 kW) to rotate and service 2, 3, or 4 stationary tanks in alternating sequence. While Tank A is dispersing, Tank B is discharging or feeding raw materials, ensuring continuous 24/7 plant production.
What Drives the Price of an Industrial Disperser?
When evaluating manufacturer proposals, understanding what drives equipment cost helps procurement teams avoid overpaying for unnecessary options or under-specifying essential mechanical features:
1. Disc Diameter & Motor Power
Motor power scales from 1.5 kW lab units to 90 kW industrial drives, dictating shaft diameter, bearing housing size, and disc dimensions (Φ150 mm to Φ800 mm). Selecting the correct power-to-viscosity ratio prevents motor stalling without overspending.
2. Hydraulic Lifting Column
Precision-machined electro-hydraulic lifting cylinders with internal oil circulation and safety limit switches ensure smooth vertical travel up to 1800 mm, representing a significant structural quality factor compared to manual screw lifts.
3. Vacuum System Integration
Adding a sealed vacuum cover requires heavy dished steel fabrication, mechanical shaft seals rated for negative pressure (≤ -0.08 MPa), sight glasses with wiper blades, vacuum buffer tanks, and liquid ring vacuum pumps.
4. Platform & Multi-Tank Swivel
Platform-mounted dispersers (PSD series) require heavy reinforced slewing bearings, 360-degree rotation bases, mezzanine mounting frames, and multi-vessel positioning interlocks that support multi-ton batch processing.
5. Metallurgy & Mirror Polishing
Wetted contact shafts and Cowles discs fabricated in standard SS304 serve general coatings, whereas corrosive chemicals, food pastes, or sanitary pharma batches require SS316L metallurgy with internal mirror polishing (Ra < 0.4 μm).
6. Explosion-Proof & VFD Inverter
ATEX / IECEx certified explosion-proof drive motors, cast-aluminum operator control consoles, and Siemens variable frequency drives (VFD) for hazardous solvent environments adjust the overall electrical investment tier.
Why Choose POLYC for Your Industrial Dispersion Machinery?
🏭 Real Direct Manufacturer in Wuxi, China
Shanghai Polyc Technology Co., Ltd. (上海朋绎科技有限公司) operates a fully-owned 9,000 m² production facility in Wuxi, Jiangsu Province. By controlling plate cutting, CNC shaft machining, dynamic balancing, hydraulic column testing, and final assembly in-house, we eliminate multi-tier trading company markups and provide direct engineering accountability.
⚙️ Complete Fluid Dispersion & Wet Milling Matrix
We engineer the complete spectrum of industrial processing equipment: PDM high-speed dispersers, PVM vacuum dispersers, PSD platform dispersers, horizontal bead mills (PZB / PZP / PZD / PZL), PZM immersion basket mills, and high-viscosity multi-shaft & planetary mixers.
🤝 3-Year Global Warranty & Direct Factory Support
All genuine POLYC dispersers are backed by our standard 3-Year Global Warranty covering structural frames, hydraulic lifting columns, and drive powertrains. We provide direct virtual installation guidance, video pre-shipment dry-run inspections, and guaranteed long-term factory supply of replacement Cowles blades, bearings, and hydraulic seals.
Get an Exact Disperser Specification & Direct Factory Quote
Tell our Wuxi engineering team your raw material formulation, viscosity range (cps), batch volume (L), and whether vacuum de-aeration or platform mounting is required — we will recommend the optimal disperser model and deliver a factory quote within 24 hours.
Frequently Asked Questions
What is a disperser used for?
What's the difference between a high speed disperser and a vacuum disperser?
When do I need a platform disperser instead of a standalone unit?
What factors affect the price of a disperser?
What disc diameters does POLYC offer?
How do I get an accurate quote for my application?
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