Category - API Pumps
API 610 OH1 Pumps
The API 610 OH1 pump is a horizontal, single-stage, overhung centrifugal pump that is foot-mounted. Although it is an integral part of industrial applications, the “foot-mounted” design distinguishes it from OH2 pumps (centerline-mounted) often found in high-temperature refineries.
- Pressure rating: 20.0 bar g
- Flow rate: Up to 1100 m³/h
- Head: Up to 220 m
Hydraulic Performance
We offer full compatibility with fixed or variable speed drivers from all manufacturers, ensuring seamless integration into your existing systems. To get started, see the general hydraulic coverage chart below for a broad performance overview.
Key Features of the API 610 OH1 Pump
- OH1 single-stage foot-mounted centrifugal pumps.
- 20 barg pumps in accordance with API 610 (11th edition) and ATEX compliance, upon request.
- Temperature applications from -40 °C to 250 °C.
- Enclosed or semi-open impellers.
- A range of alloys available upon request, including NACE-compliant materials.
- Tested in accordance with API 610 / ISO 13709 procedures – pressure, flow, NPSH, noise and vibration.
- A range of API 682 seals and systems (PED-compliant).
- Grouted and non-grouted baseplates.
- Low pressure and space-constrained option.
Typical Pump Applications
- Amine
- Boiler feed
- Booster pump duties
- Caustic transfer
- Export
- Fuel transfer
- Low NPSH capability
- LPG
- Potable water
- Produced water
- Refinery process
- Seawater duties
- MEG recovery
- Slurry process
- Low shear
Materials
Amarinth B-series pumps are available in a range of materials as standard, including the following pump/impeller combinations.
Other alloys, including NACE-compliant materials, are available upon request, and our foundries are NORSOK-approved.
In addition, we offer a complete range of NDE and NDT options along with full component traceability to ensure compliance with your exact requirements.
Material Code / Description
Casing Component (ASTM)
Impeller Component (ASTM)
A8 - 316L / 316 stainless steel
ASTM A351 CF-3M
ASTM A351 CF-3M
I1 - Standard cast iron
ASTM A278 class 30
ASTM A278 class 30
S8 - Carbon steel / 316L SS
ASTM A216 WCB
ASTM A351 CF-3M
S6 - Carbon steel / 12% chrome steel
ASTM A216 WCB
ASTM A217 Gr CA 15
D1 - Duplex stainless steel
ASTM A890 Gr 4A (UNS J92205)
ASTM A890 Gr 4A (UNS J92205)
D2 - Super duplex stainless steel
ASTM A890 Gr 6A (UNS J93380)
ASTM A890 Gr 6A (UNS J93380)
Hastelloy B
ASTM A494 Gr N-7M
ASTM A494 Gr N-7M
Hastelloy C
ASTM A494 Gr CW-12MW
ASTM A494 Gr CW-12MW
Monel
ASTM A494 Gr M35-1
ASTM A494 Gr M35-1
Titanium
ASTM B367 Gr C-2
ASTM B367 Gr C-2
Specifications
- Product Overview: A versatile series of API 610 OH1 single-stage, foot-mounted centrifugal pumps with end suction and centerline discharge, available in multiple alloy options.
- Mechanical Design: Utilizes a back pull-out design with precision metal-to-metal coupling.
- Engineering Approach: Developed through sophisticated computational methods, including Finite Element Analysis (FEA), 3D modeling and Computational Fluid Dynamics (CFD).
- Regulatory Standards: Built in accordance with API 610 12th edition and ISO 13709:2009 requirements.
- Safety Certification: Complies with ATEX EC Directive 2014/34/EU.
- Pressure Capacity: Designed for a pressure rating of 20.0 bar g at 20 °C.
- Inlet Pressure: Standard designs support a suction pressure of 16 bar g.
- Thermal Range: Operates from -40 °C to 200 °C for standard units, can be extended to 250 °C with additional cooling.
- Thermal Design Point: Standard design is optimized for a design temperature of 150 °C.
- Volumetric Flow: Can deliver flow rates up to 1100 m³/h.
- Total Dynamic Head: Achieves a differential head of up to 225 m.
- Rotational Speed: Supports operating speeds up to 3600 rpm.
- Supply Options: Available as a complete long-coupled unit, a bare shaft pump or a standalone rotating assembly.
- Physical Dimensions: Frame sizes range from 040x025x145 up to 250x200x510.
- Operating Life: Designed for a 25-year service life, including 3 years of continuous operation without shutdown.
