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Silen S2
Click on the photo to enlarge it

Very compact, sturdy, self-priming single-cell centrifugal pumps, designed to recirculate water in household or communal swimming-pool systems.

Supplied with suction and delivery connectors for connecting to filtration systems with 63-mm-diameter pipes.

Completely silent with continuous service, with built-in thermal protector, two purge plugs, high-capacity pre-filter with transparent cover and anti-blockage seal.

Single-phase versions with built-in thermal protection.



  • New design
  • New materials
    • Motor shaft in stainless steel AISI 431
    • Special mechanical seal in AISI 316
    • Bearings up to 160° C
    • 10.000 hours P2 capacitor withaluminium casing
  • Ultra-silent
  • Self-priming up to 4m
  • Extended warranty up to 5 years
Silen S2 Click on the image to download the pdf of the dimensions


Silen S2 Click on the photo to enlarge it

Frequency and units







Operating curves

Click on the product name to see each model’s specific features
Series features Silen S2:
  • Equipment
  • Check valve: Not included
  • Draining plug: Included
  • Fittings: Glue
  • Pre-filter: Included
  • Support base: Included
  • Electrical characteristics
  • Electrical isolation: F Class
  • Motor speed operation: Constantly speed
  • Motor type: Asynchronous
  • Protection rating: IP55
  • Service factor: S1
  • Service type: Continuous
  • Manufacturing characteristics
  • Discharge connection type: To Glue Connector
  • Discharge diameter: D63
  • Impeller type: Closed
  • Motor cooling: Fan
  • Stages: Single-Stage Centrifugal Pump
  • Suction connection type: To Glue Connector
  • Suction diameter: D63
  • Tightness by: Mechanical Seal
  • Materials
  • Diffuser: PP + 30% GF
  • Discharge body: PP + 30% GF
  • Gaskets: NBR
  • Impeller/s: PPO + 30% GF
  • Mechanical seal: Aluminium-Graphite
  • Mechanical seal bracket: PP + 30% GF
  • Motor casing: Aluminium
  • Motor shaft: Acero inoxidable AISI 431
  • Nuts and bolts: Stainless steel AISI 304
  • Outer pump body: PP + 30% GF
  • Pre-filter: PP + 30% GF
  • Pre-filter lid: Polycarbonate
  • Pump shaft: AISI 431
  • Suction body: PP + 30% GF
  • Support base material: PP + 20% GF
  • Usage limits
  • Liquid temperature (ºC): Min: 4 - Max: 35
  • Maximum no. of motor start-ups (start-ups/minute): 0,50

Building services

Name Language Format Size Download Favourite
Technical appendix Spanish .pdf 1.48 Mb f
Safety recommendations for surface pumps .pdf 523.54 Kb f
Silen I - Silen S - Silen S2 instruction manual .pdf 3.08 Mb f
Product portfolio .pdf 2.22 Mb f
ESPA Pool catalogue .pdf 2.24 Mb f


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