
Plunger Metering Pumps
SEKO Spring PS1 Plunger Metering Pump
Compact spring-return plunger pump. Flow 1.5–304 L/h, max 20 bar.
Max flow
1.5 – 304 L/h
Max pressure
20 bar(SS)
Turndown / accuracy
—
Wetted materials
PVC / SS316L · ceramic or SS plunger
Protection
—
Power
—
Features
- Spring return, 15 mm stroke
- Manual or electronic stroke control
- PVC / SS316L heads
- Elektra digital controller compatible
Specifications
| Flow | 1.5 – 304 L/h |
| Max pressure | 20 bar(SS) |
| Motor power | 0.18 – 0.25 kW |
| Wetted parts | PVC / SS316L · ceramic or SS plunger |
| Brand | SEKO |
Applications
Materials & media
| Wetted parts | PVC / SS316L · ceramic or SS plunger |
Common chemicals: NaOCl, acids, alkalis, polymers — confirm compatibility when inquiring.
Controls & communication
Control options are listed in notes or confirmed on inquiry.
Models & specs
| Model | Flow | Pressure | SPM | Power | Weight | Tube | Notes | |
| PS1D006A | 1.5 L/h | SS 20 / PVC 10* bar | 58 | 0.18 kW/4P | 14/12 kg | GF 1/4" | plunger Ø6 mm · stroke 15 mm | |
| PS1D006C | 3 L/h | SS 20 / PVC 10* bar | 116 | 0.18 kW/4P | 14/12 kg | GF 1/4" | plunger Ø6 mm · stroke 15 mm | |
| PS1D011A | 5 L/h | SS 20 / PVC 10* bar | 58 | 0.18 kW/4P | 14/13 kg | GF 1/4" | plunger Ø11 mm · stroke 15 mm | |
| PS1D011C | 10 L/h | SS 20 / PVC 10* bar | 116 | 0.18 kW/4P | 14/13 kg | GF 1/4" | plunger Ø11 mm · stroke 15 mm | |
| PS1D017A | 11 L/h | SS 20 / PVC 10* bar | 58 | 0.18 kW/4P | 14/13 kg | GF 3/8" | plunger Ø17 mm · stroke 15 mm | |
| PS1D017C | 22 L/h | SS 20 / PVC 10* bar | 116 | 0.18 kW/4P | 14/13 kg | GF 3/8" | plunger Ø17 mm · stroke 15 mm | |
| PS1D025A | 25 L/h | SS 20 / PVC 10* bar | 58 | 0.18 kW/4P | 14/13 kg | GF 3/8" | plunger Ø25 mm · stroke 15 mm | |
| PS1D025C | 50 L/h | SS 20 / PVC 10* bar | 116 | 0.18 kW/4P | 14/13 kg | GF 3/8" | plunger Ø25 mm · stroke 15 mm | |
| PS1D030A | 35 L/h | SS 20 / PVC 10* bar | 58 | 0.25 kW/4P | 17/14 kg | GF 3/8" | plunger Ø30 mm · stroke 15 mm | |
| PS1D030C | 70 L/h | SS 20 / PVC 10* bar | 116 | 0.25 kW/4P | 17/14 kg | GF 3/8" | plunger Ø30 mm · stroke 15 mm | |
| PS1D038A | 55 L/h | SS 17 / PVC 10* bar | 58 | 0.25 kW/4P | 19/16 kg | GF 3/8" | plunger Ø38 mm · stroke 15 mm | |
| PS1D038C | 110 L/h | SS 17 / PVC 10* bar | 116 | 0.25 kW/4P | 19/16 kg | GF 3/8" | plunger Ø38 mm · stroke 15 mm | |
| PS1D048A | 85 L/h | SS 10 / PVC 10 bar | 58 | 0.25 kW/4P | 19/17 kg | GF 1/2" | plunger Ø48 mm · stroke 15 mm | |
| PS1D048C | 170 L/h | SS 10 / PVC 10 bar | 116 | 0.25 kW/4P | 19/17 kg | GF 1/2" | plunger Ø48 mm · stroke 15 mm | |
| PS1D054A | 110 L/h | SS 8 / PVC 8 bar | 58 | 0.25 kW/4P | 20/17 kg | GF 1/2" | plunger Ø54 mm · stroke 15 mm | |
| PS1D054C | 220 L/h | SS 8 / PVC 8 bar | 116 | 0.25 kW/4P | 20/17 kg | GF 1/2" | plunger Ø54 mm · stroke 15 mm | |
| PS1D064A | 152 L/h | SS 6 / PVC 4 bar | 58 | 0.25 kW/4P | 21/19 kg | GF 3/4" | plunger Ø64 mm · stroke 15 mm | |
| PS1D064C | 304 L/h | SS 6 / PVC 4 bar | 116 | 0.25 kW/4P | 21/19 kg | GF 3/4" | plunger Ø64 mm · stroke 15 mm |
Dimensions & installation
Dimensional drawings available on request (CAD / PDF).
Downloads
Related / accessories
Related solutions
Reverse Osmosis Dosing
Antiscalant, reductant and non-oxidizing biocide dosing to protect membrane elements.
Seawater Desalination Pretreatment
Flocculant, antiscalant and defoamer dosing with online SDI monitoring to protect RO membranes.
Beverage Line Ingredient Dosing
High-precision food-grade dosing of syrup, acidulants and preservatives.
Related case studies

Electroplating
Electroplating Cr(VI) Reduction
Sodium bisulfite reduction with ORP interlock keeps Cr(VI) stably below discharge limits.

Boiler
Boiler House Automation Retrofit
Ammonia/hydrazine auto-dosing replaced manual work; boiler pH stays compliant.

Water Reuse
Water Reuse Station Disinfection
Stable compliant reuse disinfection saves 200,000 tons of fresh water per year.
Need help selecting?
Share duty (flow, pressure, media, controls) — we reply within 1 business day.





