Place of Origin:Guangdong, China
Product Material:High-purity alumina ceramic (Al₂O₃ ≥99.6%). Monolithic alumina is used for pump liners and valve seats. For reciprocating plungers, piston rods, or components requiring higher impact resistance, zirconia-toughened alumina (ZTA) can be used to improve toughness. Explore our alumina ceramic components.
Functional Features:These ceramic metering pump components provide high hardness, wear resistance, chemical stability, low contamination, smooth sliding surfaces, and precise mating clearances. Available parts include ceramic plungers, sleeves, pistons, pump cylinders, and valve seats. View more ceramic pump components.
Application Fields:Precision chemical dosing; semiconductor wet-process equipment; pharmaceutical and laboratory fluid handling; water-treatment dosing systems; industrial dispensing equipment; battery electrolyte preparation; corrosive-fluid metering systems.
Global OEM Supply:Serving OEM customers in the USA, Germany, Japan, and Europe.
Delivery Period:Standard plunger/sleeve components: 40–65 days，Complex integrated valve bodies, ultra-thin diaphragms, or matched component sets: 70–120 days
Alumina ceramic metering pump core components include precision-matched plungers, sleeves, pistons, cylinders, and valve seats made from high-purity alumina or ZTA. They are designed for pharmaceutical filling and chemical dosing systems handling corrosive, abrasive, or contamination-sensitive fluids. Their hard, chemically stable working surfaces help reduce wear, internal leakage, and metal-ion contamination while supporting accurate, repeatable fluid delivery over long operating cycles.
High-purity alumina with an Al₂O₃ content of at least 99.6% is the standard material for most fluid-contact components. For processes with stricter purity requirements, 99.7%–99.9% alumina is also available. ZTA may be used for moving parts that need greater toughness or better resistance to impact and side loads.
More information about available grades can be found in our alumina ceramic components section.
You can also view our full range of ceramic pump components for dosing, filling, and fluid-control equipment.
Browse our custom precision ceramic components if your project also requires other drawing-based ceramic parts.
| Parameter | Typical Value | Notes |
|---|---|---|
| Material Grade | Al₂O₃ ≥99.6% | 99.7%–99.9% alumina available when required |
| Piston/Sleeve Clearance | 0.002–0.005 mm | Confirmed according to component size and operating conditions |
| Surface Finish | Ra ≤0.1 μm | Available on specified lapped surfaces |
| Metering Accuracy | System target: ±0.5% or better | Depends on the complete pump, drive system, and fluid |
| Vickers Hardness | 1600–1800 HV | Typical range for high-purity alumina |
| Compressive Strength | 2500–3000 MPa | Typical material value |
| Cleaning Compatibility | CIP/SIP options available | Cleaning medium and temperature must be confirmed |
| Thermal Expansion | Approx. 8.2 × 10−6/K | Varies slightly by alumina grade |
The values above are general references. Final specifications are confirmed from the drawing, assembly design, operating fluid, and inspection requirements.
| Material | Main Characteristics | Best Used When |
|---|---|---|
| High-Purity Alumina | Hard, wear-resistant, chemically stable, and cost-effective | A reliable choice for most metering-pump core components |
| ZTA | Combines alumina wear resistance with improved toughness | Moving parts are exposed to moderate impact or side loading |
| Zirconia | Higher toughness and resistance to cracking | Mechanical loading is more important than material cost |
| Silicon Carbide | Excellent resistance to severe wear, corrosion, and thermal shock | The pump handles demanding chemicals or operates under harsh conditions |
Both options are available. We can manufacture an individual replacement component or produce several mating parts as a matched set, depending on the pump design.
In many cases, yes, but the change should be reviewed first. Ceramic and metal behave differently, so the wall thickness, mounting method, mating clearance, and areas of mechanical stress may need adjustment.
We consider the component diameter, fluid viscosity, operating pressure, temperature, acceptable leakage, and required dosing performance before confirming the clearance.
High-purity alumina is suitable for many cleaning processes. Please provide the cleaning chemical, concentration, temperature, pressure, and cycle time so that compatibility can be checked.
Inspection reports can cover critical dimensions, surface finish, roundness, cylindricity, and other drawing requirements. Material information can also be supplied when agreed during quotation.
Yes. CERAMPRO supports OEM customers in the USA, Germany, Japan, and other European markets, providing drawing review, prototype production, dimensional inspection, export packaging, and international delivery.
Please send the 2D or 3D drawings, assembly details, operating fluid, pressure, temperature, required service life, inspection standard, and estimated order quantity. This allows us to review the project and provide a practical quotation.
