Solenoid Diaphragm
| Identification | |
| Manufacturer | SEKO |
| Series | Tekna EVO |
| Model / size | AKS 603 |
| Dosing type | Solenoid Diaphragm |
| Pump class | Category A — Solenoid diaphragm, low-flow precision dosing. Stroke frequency 120 SPM. Accuracy ±2.0%. Best for: intermittent duty, water treatment, swimming pools. Limit: 5.0 L/h, 8.0 bar. |
| Spec code | DSG-020 |
| Dosing duty | |
| Min flow | 0.4 L/h |
| Max flow | 5 L/h |
| Max pressure | 8 bar |
| Dosing accuracy | 2 % |
| Stroke frequency | 120 spm |
| Suction lift | 1.5 m |
| Max viscosity | 300 cP |
| Control & drive | |
| Control type | Manual + ON/OFF |
| Stroke adjustment | Manual 0-100% |
| Power | 29 W |
| Supply voltage | 100-230 VAC V |
| IP rating | IP65 |
| Materials & chemical | |
| Liquid end | PP |
| Diaphragm | PTFE/EPDM |
| Valve / ball | Ceramic |
| pH range | 0-14 (full range — HF, concentrated acids, caustic) |
| Chemical compatibility | Chlorine, pH adj., general chemicals |
| Application | |
| Service | Swimming Pool, Small Water Treatment |
| Key features | SEKO Tekna EVO AKS 603, 5 L/h at 8 bar, entry-level dosing, manual stroke, 120 SPM |
A complete, shareable page for a single pump. It plots the performance curve (head, efficiency and NPSHr against flow, with the best-efficiency point marked, or dosing flow against stroke), decodes the API 682 / ISO 21049 mechanical seal plan, and lists the full specification — duty and operating range, drive and motor, materials of construction, build and reliability, connections, weight and certifications. Pop-up panels give the type-specific preventive-maintenance schedule (daily to annual tasks with procedures) and a troubleshooting guide (symptoms, probable causes and recommended solutions).
Run a centrifugal pump near its BEP and keep dosing pumps in their recommended stroke band. Data is from the engineering reference database — confirm against the manufacturer's certified curve before procurement.
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