API 610 OH1 Pumps

Amarinth OH1 B Series pumps are designed where applicable to API 610 12th edition specifications for the Petrochemical, Chemical and Oil & Gas markets and are fully ATEX compliant. All API materials are available to match your application, plus bespoke options including NACE compliant materials.

Standard Documentation, Testing and NDT packs are offered. Alternatively bespoke packages can be tailored to fit your exact requirements.

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API 610 OH1 Pump Key Features

  • OH1 single stage foot mounted centrifugal pumps.
  • 20 barg pumps to API 610 (11th edition) & ATEX compliance, on application
  • -40°C to 250°C temperature applications
  • Shrouded or Semi-Open Impellers
  • A range of alloys available on request including NACE compliant materials
  • Tested to API 610 / ISO 13709 procedures – Head, Flow, NPSH, Noise & Vibration
  • A range of API 682 Seals & systems (PED compliant)
  • Grouted and Non-Grouted Baseplates
  • Low pressure space restricted option

Pump Typical Applications

  • Amine
  • Boiler feed
  • Booster pump duties
  • Caustic transfer
  • Export
  • Fuel transfer
  • Low NPSH capabilities
  • LPG
  • Potable water
  • Produced water
  • Refinery process
  • Seawater duties
  • MEG reclamation
  • De-sanding process
  • Low shear capabilities

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.


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 12th edition / ISO 13709:2009
ATEX EC-Directive 2014/34/EU

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.

Materials Casing Impeller
A8 - SS 316L / SS 316L ASTM A351 CF-3M ASTM A351 CF-3M
I1 - Cast Iron / Cast Iron ASTM A278 Class30 ASTM A278 Class30
S8 - Carbon Steel / SS 316L ASTM A216 WCB ASTM A351 CF-3M
S6 - Carbon Steel / 12% Cr SS ASTM A216 WCB ASTM A217 Gr CA 15
D1 - Duplex SS / Duplex SS ASTM A890 Gr 4A (UNS J92205) ASTM A890 Gr 4A (UNS J92205)
D2 - Super Duplex SS / Super Duplex SS ASTM A890 Gr 6A (UNS J93380) ASTM A890 Gr 6A (UNS J93380)
Hastelloy B / Hastelloy B ASTM A494 Gr N-7M ASTM A494 Gr N-7M
Hastelloy C / Hastelloy C ASTM A494 GrCW-12MW ASTM A494 GrCW-12MW
Monel / Monel ASTM A494 GrM35-1 ASTM A494 GrM35-1
Titanium / Titanium ASTM B367 Gr C-2 ASTM B367 Gr C-2