Stark Series

Summary

Product identification

The Stark series comprises hydraulic diaphragm dosing pumps with full motion mechanisms.

Operating limits

• Flow rate: up to 660 l/h
• Pressure: up to 124 bar

Feed water

These pumps are designed for high precision dosing applications and are manufactured with materials ensuring compatibility with a wide range of liquids, including toxic, corrosive, and other hazardous liquids. The design features a zero-leakage profile for watertight construction and protection against pollutants.

Electrical

• Motor power: 0.18/ 0.25/ 0.75/ 1.1/ 1.5 kW

Mechanical / hydraulic

• Mechanism: Mechanical return type, available in several sizes. Features an internal worm gearbox, oil bath lubricated with low noise emissions, and rotating parts on bearings to minimize power consumption.
• Diaphragm heads: Hydraulic PTFE diaphragm heads, offering operational safety and reliability. A mechanical refilling system maintains a constant hydraulic fluid level for maximum precision and repeatability, managing diaphragm deformation and increasing lifespan.
• Pump head materials: SS 316L, PP, PVDF, and PVC-U
• Stroke length: 10/ 25 mm
• Diaphragm diameter: 12/ 15/ 20/ 30/ 35/ 40/ 50 mm
• Venting system: Guarantees automatic venting during operation and facilitates pump priming via manual air purge.
• Pressure relief valve: Protects the pump against unexpected overpressure.
• Flow rate adjustment: Easy-to-handle knob with high visibility nonius for manual adjustment. Optionally available with automatic variation by electrical actuators (AKTUA).
• Cartridge valves: Double and triple ball configurations are available with high precision seats for maximum dosing precision, even at small flow rates. Gaskets include metal for SS316L stainless steel heads and FPM for plastic heads, ensuring maximum compatibility.

Applications

Suitable for a wide range of water treatment and industrial sectors, including:

• Municipalities
• Wastewater
• Chemical
• Food & Beverages
• Detergents
• Power Generation
• Environment
• Petrochemical
• Pharmaceutical
• Paper and Textile

Accessories

• Flow rate calibration pots
• Pulsation dampers
• Safety valves
• Back pressure valves

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror