Pump Standards & Approvals

HMD Kontro is proud that our sealless magnetic drive pumps conform to many international industry standards. This ensures that your pumps deliver the best and most reliable performance for your specific application.

Standards include API, ASME ANSI and ISO and relate to the compliance of our pumps and their components in relationship to efficiency, dimensions, design, testing and dynamics.


API Standards

API sets the standards in the oil & gas pumping industries.  The API (American Petroleum Institute) standards are used to define systems, tests and equipment design and are predominantly used in the oil and gas, petroleum and petrochemical industries. Pumps that meet these standards are some of the highest quality available in industry.

Whilst API 685 relates to sealless magnetic drive pumps, API 610 details mechanically sealed pumps.


API 685 Standard (Sealless Pumps)

The scope of the API 685 standard covers the minimum design, testing, dynamics, and metallurgical requirements for sealless centrifugal pumps. Included are single stage pump designs for magnetic drive pumps of both synchronous and eddy-current / torque ring drive designs and also canned motor pumps.

This specification, initially released in October 2000, standardises the application of sealless pumps in petroleum, heavy-duty chemical and gas service industries.  API 685 is the sealless pump equivalent to API 610, which is well known and has been accepted as industry standard for sealed centrifugal pumps for many years.

HMD Kontro has been building sealless magnetic drive pumps for oil and gas associated industries to API codes since 1983 and has a long association and history with the standard. The second edition of the standard came out in February 2011 and HMD Kontro pumps fully conform to this updated version.


API 610 Standard (Mechanically Sealed Pumps)

The scope of the API 610 standard covers the minimum design, testing, dynamics, and metallurgical requirements for mechanically sealed centrifugal pumps and hydraulic power recovery turbines. Also included are single stage overhung pumps as well as both single and multistage between bearing pump designs in both horizontal and vertical configurations.

The API 610 standard not only provides design criteria for the design of the centrifugal pump, but also defines how the pump should be tested and on what base it should be mounted on. There are also configuration codes consisting of two letters and a number with the letters defining the pump type and the number used to differentiate more detailed configuration options.

  • OH – Overhung
  • VS – Vertically Suspended
  • BB – Between-Bearings

HMD Kontro originally built sealless magnetic drive pumps for oil and gas associated applications to relevant parts of this API code and continue to do so.


ASME Standards

ASME is the registered trademark of the American Society of Mechanical Engineers, the leading international developer of codes and standards associated with the art, science, and practice of mechanical engineering. The first standard was issued in 1914 and since then almost 600 have been offered. These standards enhance public safety and health.


ASME B73 and ASME B73.3 Standards

ASME B73.1 and ASME B73.3 are the specifications in place for horizontal end suction centrifugal pumps used in chemical processes with the former applying to sealed horizontal, end-suction, overhung, radially split, single-stage, mechanically sealed pumps and the latter to sealless versions.


ASME B73.3 Standard

This is the ASME specification for sealless horizontal end suction centrifugal pumps for chemical processes. This standard applies to horizontal, end-suction, overhung, radially split, single-stage sealless pumps and defines both dimensional and best-efficiency head and capacity parameters.  This means that pumps can be exchanged within the same grouping from any manufacturer without piping or foundation dimension change.

The standard specifies a number of key dimensions for pumps including dimensions such as overall height and length of the bare pump, nozzle and shaft diameters, the size, location and spacing of mounting bolts. It also specifies some performance characteristics and a number of design features that are intended to ensure reliable service and simplified maintenance.  HMD Kontro pumps comply with all relevant aspects of the ASME B73.3 standard.


ASME B16.5 Standard

This is a specification for pipe flanges and flanged fittings. The scope of the standard includes defining and standardising pressure and temperature ranges for: flange ratings within various material groups, flange dimensions for various ratings and fitting designs and flange bolts, including establishing tolerances covering the major flange dimensions and giving rules covering hydrostatic testing and the application of various raised face designs.  HMD Kontro pumps comply with all relevant aspects of this ASME standards.


ISO Standards

This is the International Organisation of Standards and is an independent organisation that oversees, creates, and promotes internationally accepted standards for numerous industries, ranging from agriculture and manufacturing to technology. ISO safety symbols are recognised across language barriers to increase hazard awareness and safety compliance.


ISO 15783

This standard specifies the requirements for Sealless rotodynamic pumps which are mainly used in chemical processes, water treatment and petrochemical industries. It includes design features concerned with selection, installation, maintenance and operational safety of the pumps. ISO 15783 does not cover dimensional and hydraulic performance requirements and further technical requirements are detailed in ISO 5199


ISO 2858

ISO 2858 is an international standard and refers to end suction centrifugal pumps and specifies the main parameters and the pump designation. It specifies the principle dimensions, mounting details and nominal duty point of end-suction centrifugal pumps having a maximum operating rating of 16 bar.


ISO 5199

This specifies a variety of performance requirements including minimum bearing life and construction features such as general layout and seal configurations. In some aspects, including maximum permissible vibration levels, ISO 5199 is more stringent than ASME B73.1.

HMD Kontro pumps comply with all relevant aspects and specifications of ISO pump standards.  In addition, our manufacturing and business processes also comply with other ISO standards.  Further details are shown on the certification and compliance page.


For further information on the above standards and our manufacture of safe and leak-free sealless pumps and their adherence to international industry standards, please call +44 (0) 1323 452000 or email us.

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