SEKO Solenoid Pump Models Explained: Tekna, Kompact and Invikta

The SEKO solenoid pump range looks crowded at first, with a long string of letter codes, but each model really tells you just two things: the letters are the control version and the number is the flow size. This guide covers only the solenoid range, walking through the five series from largest to smallest flow, then explains how we usually help customers choose.

Every SEKO solenoid pump in these five series shares the same standard build: a PVDF head, ceramic balls and a PTFE diaphragm. So material is rarely the hard part. The real work is getting flow, pressure and control right.

SEKO Tekna: Five Models From 0.4 to 54 L/h

SEKO Tekna is the widest-ranging SEKO solenoid pump series. With just five models, 500, 600, 603, 800 and 803, it covers 0.4–54 L/h with a maximum of 20 bar. The mounting dimensions of all five are almost identical, so designers can fix the mounting points early and later size changes won't need a new bracket.

Each SEKO solenoid pump model lists flow and pressure in pairs, and the more flow you take, the less pressure is available:

500: from 0.4 L/h at 20 bar to 1.5 L/h at 6 bar;
600: from 2.5 L/h at 20 bar to 5 L/h at 8 bar;
603: from 4 L/h at 12 bar to 8 L/h at 2 bar;
800: from 7 L/h at 16 bar to 18 L/h at 1 bar;
803: from 20 L/h at 5 bar to 54 L/h at 0.1 bar.

At full flow the 803 only manages 0.1 bar, which really limits it to open-tank dosing; for a pressurized line, step back a size. One more detail people miss: the first four models use 4/6 mm tubing, while the 803 moves up to 8/12. Swapping an 800 for an 803 means changing the suction line, discharge line and injection valve connection as well.

The Five SEKO Tekna Control Versions

There are three analog versions. AKS is the basic manual SEKO solenoid pump, with a knob for flow and two frequency ranges. AKL adds a level probe input. APG is proportional, taking a 4–20 mA current signal or a pulse signal such as a water meter output, with four pulse ratio options.

There are two digital versions. TPG also takes a current or pulse signal and adds a timer, PPM dosing, statistics, password protection and remote start/stop. TPR has a built-in pH/ORP controller that adjusts flow from the reading and needs a probe with a BNC connector, which suits pools and cooling water where water quality needs watching.

Reading a SEKO Solenoid Pump Code: AKL 603 as an Example

The catalog's sample code is AKL 603 N H P 0 800. From left to right:

Control version, here AKL;
Model, meaning the flow size;
Power supply, where N means wide-range voltage;
Wetted materials, where H means PVDF head, ceramic balls and PTFE diaphragm;
Fitting material, where P means PVDF;
Seal, where 0 is FPM and 1 is EPDM;
Optional items.

The seal digit is the one most often filled in wrong. Acids and alkalis call for different seal materials, so if you aren't sure, send the chemical name, concentration and temperature to the supplier rather than guessing.

Tekba: The Digital Keypad Version

In the SEKO solenoid pump lineup, Tekba uses the same 600, 603, 800 and 803 flow sizes as SEKO Tekna, but with a digital keypad that shows frequency percentage and stroke count. It has four sub-series: EMS manual, EML manual with level input, EMC pulse-controlled and EMM current-signal controlled. Its code adds a stroke adjustment position, where N means frequency only and M means both frequency and stroke length.

The catalog page also carries a note that it is available only through specially authorized distributors, so ask about sourcing and lead time before you commit.

Kompact and Komba: Small SEKO Solenoid Pump Sizes Up to 9 L/h

Both series have just two models, 200 and 201. The 200 runs from 3 L/h at 10 bar to 9 L/h at 2 bar; the 201 is 1 L/h at 7 bar. For doses of only a few liters an hour, these suit better than oversizing, because normal operation won't sit at the very bottom of the dial.

Kompact is knob-operated, in AMS, AML, AMC and AMM versions, with a reinforced PP housing rated IP65. AMC and AMM have a mode switch on the panel: C for constant flow and P for dosing in proportion to the external signal, so check the switch during commissioning. Komba is the keypad version, in DMS, DML, DMC and DMM, working much like Tekba.

Watch the power supply here. AMS and DMS are 240Vac 50Hz versions; only the others take wide-range voltage.

Invikta: The Entry-Level SEKO Solenoid Pump

Invikta has a single manual version, KCL, and a single model, 635: 3 L/h at 7 bar and 6 L/h at 2 bar. The heads come as CE or CF, and the only difference is the seal, EPDM on CE and FPM on CF. Its role is clear: the catalog lists OEM, pools, car washes, cooling towers and reverse osmosis, places where flow is small and control is simple.

How We Pick a SEKO Solenoid Pump

We set the flow size first, then the control version:

Manual adjustment and steady dose: AKS, EMS, AMS or KCL;
Following a water meter pulse: APG, TPG, EMC or AMC;
Current signal input: APG, TPG, EMM or AMM;
Automatic dosing on pH/ORP: go straight to TPR.

If the tank has a level probe, pick a version with a level input so a low level triggers an alarm and the pump doesn't run dry for long. The catalog's typical installation drawing also shows a back-pressure valve, multifunction valve, flowmeter and priming valve; at low-pressure injection points, don't skip the back-pressure valve.

Conclusion

The whole SEKO solenoid pump range comes down to one rule: letters set the control, numbers set the flow. For up to a few dozen liters an hour pick SEKO Tekna or Tekba, for up to 9 L/h pick Kompact or Komba, and for simple jobs use Invikta. Every SEKO solenoid pump model loses pressure as flow rises, so match the injection pressure to a specific size, then confirm the seal material and power version before ordering.

FAQ

What is the difference between SEKO Tekna and Tekba?

The flow sizes are essentially the same; the difference is operation. SEKO Tekna comes in analog and digital versions, while Tekba is a digital keypad pump that can also offer dual frequency and stroke length adjustment.

Which model doses automatically on pH?

The SEKO Tekna TPR. It has a built-in pH/ORP controller and needs a probe with a BNC connector.

Can the 803 inject into a pressurized line?

That depends on how far you open it. At full flow it only gives 0.1 bar. With back pressure, turn it down to about 20 L/h, where it reaches 5 bar; beyond that, change models.

Can a SEKO Tekna be wall mounted?

Yes. A mounting bracket comes with the pump, so wall or upright mounting both work. Keep the head close to the tank liquid level and the suction line short.

Will a SEKO solenoid pump run on 110V?

Most versions accept wide-range voltage, so yes. The exceptions are Kompact AMS and Komba DMS, so check before buying.

Not sure which SEKO solenoid pump to choose? Send the chemical, dose, injection pressure and control signal through our contact page and we will help you pick from the catalog.