Amarinth S Series industrial centrifugal pumps are designed and manufactured for a number of applications including condensate recovery, brewery processing, caustic transfer and water duties. The pumps are typically found in general industrial applications such a building services or breweries and distilling. S Series pumps are designed for low NPSH applications and all have independently verified, full ATEX compliance.

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The S Series general industrial pumps are designed to be fully interchangeable with Girdlestone SSM or SSD pumps. Amarinth's S Series pump has identical termination points (i.e. suction and discharge flange positions) to the Girdlestone equivalent pump meaning there are no issues changing pipework when you replace your existing pump. The S Series will simply slot straight in to the space left by the old pump. We also have a conversion kit to adapt an old fractional motor pump to use a modern lower cost metric motor, again without modifying pipework.

Using modern computer aided design software the pumps are designed as a light to medium duty, minimal wear, long life pump. The original Girdlestone design has been in use for many decades and is a well proven, reliable workhorse. The Amarinth S Series replacement is aimed at customers who want the same reliability and minimum disruption when a new replacement is required for their existing Girdlestone pump.

To complete the package a full range of standard material options including cast iron, stainless steel and gunmetal are available to match your process fluid. Standard documentation packs including data sheets, material certification, installation and operating manuals are available to suit the application. Performance testing to BS EN 25199 / ISO 5199 and various NDE (non destructive examination) and NDT (non destructive testing) options are offered to ensure full compliance to our customer's specifications. Alternative bespoke packages can be tailored to fit your exact requirements.

For more information about this product please get in touch using one of the methods below.

Hydraulic Performance

Amarinth S Series pumps can be fitted with fixed or variable speed drivers from any manufacturer. The overall S Series hydraulic coverage chart is shown on the left. More detailed hydraulic coverage charts list individual pump designations at 2 pole & 4 pole speeds. Specific duty curves will be provided with all quotations.

Use the slider at the bottom of the images to select the hydraulic coverage chart you're interested in and then launch the relevant pdf to review the coverage charts in more detail.


A number of images are provided to help you visualise our S Series product including:

  • Isometric view
  • Exploded view
  • General arrangement
  • Sectional arrangement

Select an image below using the slider at the bottom and then launch the relevant pdf.

Other product details and photos can be found in our library.

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General description

A range of single stage centrifugal end suction pumps with tangential discharge manufactured in a variety of alloys. All pumps and individual components are fully interchangeable with the equivalent Girdlestone SSD / SSM series units.


Back pullout design with machined abutments

Design methodology

Advanced computer techniques including 3D modelling, FEA

Design standards

ATEX EC-Directive 94/9/EC (close coupled versions only)

Design pressure rating

10 bar g @ 20°C

Suction pressure rating

7.5 bar g (long coupled)
3.5 bar g (close coupled)

Temperature rating

-5°C to 120°C (long coupled)
-5°C to 120°C (close coupled)

Design temperature

150°C (standard construction)

Flow rate

Up to 20m³/h

Differential head

Up to 55m


Up to 3600 rpm


Long coupled pump
Close coupled pump
Bareshaft pump

Frame sizes

025x025x173 to 040x040x127

Design life

15 years (2 years uninterrupted operation)


Amarinth S Series pumps are available in a variety of materials as standard which include the following pump / impeller combinations.

Other alloys, including NACE compliant materials are available on request and our foundries are NORSOK approved.

In addition we offer a full range of NDE & NDT options along with full component traceability to ensure compliance to your exact requirements.

Materials Casing Impeller
Cast Iron / Cast Iron BS EN 1561 Gr EN-GJL-250 BS EN 1561 Gr EN-GJL-250
Cast Iron / Gunmetal BS EN 1561 Gr EN-GJL-250 BS EN 1982 CC492K-GS
Cast Iron / Stainless steel 316 BS EN 1561 Gr EN-GJL-250 ASTM A744 CF-8M
Stainless steel 316 / Stainless steel 316 BS 3100 316 C12 ASTM A744 CF-8M
Gunmetal / Gunmetal BS 1400 LG2 BS EN 1982 CC492K-GS