Overhung Centrifugal Pump (API 610 OH1)

Model: CEE

The API 610 OH1 Model CEE pump is a horizontal, single-stage, overhung centrifugal pump designed to API 610 standards for oil & gas, refinery, and petrochemical services. It features a radially split casing, closed impeller, and heavy-duty shaft for efficient performance, with API 682 sealing and back pull-out design ensuring reliable, easy maintenance.

API 610 OH1 Pump

Introduction

The CENTFOS -CEE API 610 OH1 pump is a horizontal, overhung, single-stage centrifugal pump designed in full compliance with API 610 latest edition for refinery, petrochemical, and oil & gas applications.

OH1 pumps are widely used for moderate pressure and temperature services, offering compact design, reliable operation, and cost-effective performance for process duties.

The CENTFOS OH1 series combines robust casing construction, optimized hydraulic performance, and API-compliant mechanical arrangements to ensure safe and continuous operation in demanding industrial environments.

Key Features
  • Designed in accordance with API 610 (OH1 type)
  • Horizontal, single-stage, end suction configuration
  • Radially split casing
  • Centerline-mounted design (optional depending on temperature)
  • Back pull-out construction for easy maintenance
  • Closed impeller design for high efficiency
  • Replaceable casing wear rings
  • API 682 compliant mechanical seal chamber
  • Suitable for VFD operation
  • Low NPSHr optimized hydraulic design
  • Heavy-duty shaft with minimal deflection
  • Bearing housing designed for extended L10 life
Technical Specifications
Parameter Range
Flow Rate Up to 1,000 m³/hr
Head Up to 200 m
Operating Pressure Up to 20-25 bar
Temperature Range -40°C to +350°C
Speed 1,450 / 2,950 rpm (50 Hz)
Nozzle Size As per API 610
Flange Standard ASME B16.5 / DIN
Seal Type Single / Double Mechanical Seal
Seal Plans API Plan 11 / 52 / 53
Mounting Baseplate mounted
Design Characteristics
Hydraulic Design
  • Precision-engineered impeller
  • High-efficiency vane geometry
  • Low vibration performance
  • Optimized for stable operation at BEP
Mechanical Design
  • Overhung impeller configuration
  • Heavy-duty shaft to control deflection
  • Oil-lubricated anti-friction bearings
  • Bearing housing designed for 25,000+ hours L10 life
  • Back pull-out design allowing maintenance without disturbing piping.
Seal Chamber
  • API 682 compliant seal chamber
  • Cartridge seal ready
  • Suitable for various flush plans
Construction & Materials
Component Standard Material
Casing ASTM A216 WCB / CF8M
Impeller Stainless Steel / Duplex
Shaft AISI 4140 / 410 SS
Wear Rings SS / Hardened Materials
Shaft Sleeve SS 410 / 316
Bearings SKF / FAG (or equivalent)
Baseplate Fabricated Steel / API Type
Optional materials:
  • Duplex Stainless Steel
  • Super Duplex
  • Alloy 20
  • Monel
  • Hastelloy
Applications
The CENTFOS-CEE OH1 pump is suitable for:
  • Refinery process services
  • Petrochemical plants
  • Oil & gas processing
  • Hydrocarbon transfer
  • Light crude oil
  • Condensate service
  • LPG/LNG auxiliary systems
  • Chemical process liquids
  • Boiler feed low-pressure stages
  • Cooling water circulation
Advantages
  • Compact footprint
  • Lower initial investment compared to BB types
  • Easy installation and maintenance
  • High reliability
  • API-compliant safety design
  • Flexible sealing options
  • Suitable for continuous duty
Why Choose CENTFOS-CEE OH1?
  • Engineered as per API 610
  • Proven hydraulic performance
  • Global quality standards
  • Customizable material options
  • Suitable for harsh oilfield environments
  • Backed by CENTFOS engineering expertise