Description
The Seko HYDRAKOS – Water-Driven Pumps 2500 l/ph 3-10% PVDF/FPM is a non-electric proportional chemical dosing pump designed to provide accurate, repeatable chemical injection using only water pressure and flow. Manufactured with a PVDF (Polyvinylidene Fluoride) pump body and FPM (Viton®) seals, this model offers exceptional chemical compatibility and is ideal for dosing acids, oxidising agents, chlorinated products, solvents, and other aggressive treatment chemicals.
Powered entirely by a hydraulic motor, the pump automatically injects chemicals in direct proportion to the water flow, ensuring precise dosing regardless of fluctuations in water pressure or flow rate. Its self-priming design, adjustable dosing ratio, and corrosion-resistant construction provide reliable performance while reducing maintenance and operating costs. The PVDF body provides superior thermal stability, excellent stress crack resistance, and outstanding corrosion resistance, while the FPM seals offer exceptional resistance to acidic and solvent-based chemicals.
Features:
- Water-driven proportional dosing pump.
- No electrical power required.
- Adjustable dosing range from 3% – 10%.
- Maximum water flow rate of 2,500 l/ph.
- PVDF pump body with exceptional chemical compatibility.
- FPM (Viton®) seals for excellent resistance to acids, solvents, and chlorinated chemicals.
- Superior thermal stability and stress crack resistance.
- High corrosion resistance.
- Self-priming operation.
- Accurate and repeatable proportional dosing.
- Injection automatically stops when water flow stops.
- Suitable for fresh, salt, and deionised water.
- Compact, lightweight, and easy to install.
- Low operating and maintenance costs.
Specifications:
- Product code: WDPD25RE100FV00
- Series: Seko HYDRAKOS D25RE100
- Pump type: Water-driven proportional dosing pump.
- Maximum water flow rate: 2,500 l/ph.
- Body material: PVDF (Polyvinylidene Fluoride).
- Seal material: FPM (Viton®).
- Adjustable dosing range: 3% – 10%.
- Water flow range: 10 to 2,500 l/ph.
- Maximum chemical viscosity: 400 cPs at 20°C.
- Power supply: Water pressure and flow only (Non-electric).
Applications:
- Drinking water treatment.
- Water purification systems.
- Irrigation and fertigation.
- Fertiliser injection.
- Agricultural chemical dosing.
- Industrial process dosing.
- Cooling water treatment.
- Car wash systems.
- Legionella control.
- Chemical injection systems.
- Mining applications.
- Acid dosing systems.

Installation:
Install the pump directly into the water supply line following the indicated flow direction. Ensure the operating water pressure and flow remain within the specified limits. Use chemical-resistant tubing compatible with PVDF and FPM (Viton®) materials. For optimum performance, install a filter upstream where debris may be present and periodically inspect the suction line and seals as part of routine maintenance.
Why choose the Seko HYDRAKOS – water-driven pumps 2500 l/ph 3-10% PVDF/FPM?
- Provides accurate proportional chemical dosing without electricity.
- Adjustable dosing ratio from 3% – 10% for higher chemical injection requirements.
- PVDF body offers exceptional chemical compatibility.
- Superior thermal stability and resistance to stress cracking.
- High corrosion resistance for demanding industrial and water treatment applications.
- FPM (Viton®) seals provide outstanding resistance to acids, chlorinated products, oils, and solvents.
- Self-priming design simplifies commissioning.
- Automatically stops dosing when water flow stops, preventing chemical waste.
- Suitable for agricultural, industrial, commercial, and water treatment applications.
- Low maintenance design with long service life.
- Trusted SEKO engineering for reliable and consistent chemical dosing.
Seko HYDRAKOS – Water-Driven Pumps










