Amarinth API 610 OH1 11th edition B Series petrochemical process pumps are designed and manufactured for a number of applications including LPG, fuel transfer, produced water and export duties. The pumps are typically found in the oil & gas production and refinery industries, though they can be used for other applications such as seawater and condensate duties. B Series pumps are designed for low NPSH applications and all have independently verified, full ATEX compliance.

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Using modern computer aided design software the pumps are designed as a heavy duty, minimal wear, long life pump. Conceived as a modular design, with a number of options available, ensures full compliance with a customer's exact requirements and specifications. The B Series pumps are designed for lighter duties than the fully complaint API 610 OH2 A Series pump. The main differences are that the B Series is foot mounted with a 20 bar g maximum pressure and comes with a compact reduced footprint baseplate as standard.

The pumps can be fitted with a variety of proprietary components (i.e. seals, motors and couplings) from all the major manufacturers to cater for customers site preferences. Double mechanical seal arrangements can be fitted with a seal support system attached. This can be supplied by Protect System, which is designed and manufactured by Amarinth, or another manufacturer's system can be fitted.

To complete the package a full range of standard material options from SG iron and stainless steel, to super duplex and hastelloy are available to match your process fluid. NACE and NORSOK compliant materials are also available. Standard documentation packs including manufacturing data books, material certification, installation and operating manuals are available to suit the application. Performance testing to API 610 / ISO 13709 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 B Series pumps can be fitted with fixed or variable speed drivers from any manufacturer. The overall B 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 & then launch the relevant PDF to review the coverage charts in more detail.

Drawings & Visualisations

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General description

A range of API 610 OH1 single stage, foot mounted centrifugal end suction pumps with centreline discharge manufactured in a variety of alloys.


Back pullout design with metal to metal fits

Design methodology

Advanced computer techniques including 3D modelling, FEA & CFD

Design standards

API 610 11th : 2010 / ISO 13709 : 2010 (OH1)
ATEX EC-Directive 94/9/EC

Design pressure rating

20.0 bar g @ 20°C

Suction pressure rating

16 bar g (standard construction)

Temperature rating

-40°C to 200°C (standard construction)
-40°C to 250°C (with cooling)

Design temperature

150°C (standard construction)

Flow rate

Up to 1100m³/h

Differential head

Up to 225m


Up to 3600 rpm


Long coupled pump
Bareshaft pump
Rotating assembly

Frame sizes

040x025x145 to 250x200x510

Design life

25 years (3 years uninterrupted operation)


Amarinth B 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.

A8 - SS 316L / SS 316LASTM A351 CF-3MASTM A351 CF-3M
I1 - Cast Iron / Cast IronASTM A278 Class30ASTM A278 Class30
S8 - Carbon Steel / SS 316LASTM A216 WCBASTM A351 CF-3M
S6 - Carbon Steel / 12% Cr SSASTM A216 WCBASTM A217 Gr CA 15
D1 - Duplex SS / Duplex SSASTM A890 Gr 4A (UNS J92205)ASTM A890 Gr 4A (UNS J92205)
D2 - Super Duplex SS / Super Duplex SSASTM A890 Gr 6A (UNS J93380)ASTM A890 Gr 6A (UNS J93380)
Hastelloy B / Hastelloy BASTM A494 Gr N-7MASTM A494 Gr N-7M
Hastelloy C / Hastelloy CASTM A494 GrCW-12MWASTM A494 GrCW-12MW
Monel / MonelASTM A494 GrM35-1ASTM A494 GrM35-1
Titanium / TitaniumASTM B367 Gr C-2ASTM B367 Gr C-2