Here are details of some of the standards that pumps need to comply with:
API 610 specifies requirements for centrifugal pumps, including pumps running in reverse as hydraulic power recovery turbines, for use in petroleum, petrochemicals, and gas industry process services. This international standard is applicable to overhung pumps, between bearing pumps and vertically suspended pumps.
API685 details requirements for sealless centrifugal pumps in petroleum, petrochemical and gas industry process service. This standard is applicable to single stage overhung pumps of two classifications, magnetic drive pumps (MDP) and canned motor pumps (CMP).
ISO 5199 / 2858
This international standard specifies the requirements for Class II centrifugal pumps of single-stage, multistage, horizontal or vertical construction, including for any drive and any installation in general application.
ANSI / ASME (BS 73.1)
This standard was developed to address the needs of the chemical industry for a robust family of single-stage end-suction centrifugal pumps. The standard covers multiple pump sizes and specifies the number of key dimensions for each of these, including overall height and length of the bare pump, nozzle and shaft diameters, the size, location and spacing of mounting bolts, etc.
ANSI B73.1 also specifies performance characteristics and a number of design features that are intended to ensure reliable service and simplified maintenance (e.g. back pull-out construction with replaceable wear rings).
There are two basic groups of approval, those that apply to material compatibility and those to the actual design of the pump. For material compatibility, there are several globally recognised approval bodies the oldest being the US Food and Drug Administration (FDA), which is still recognised worldwide for material compatibility. However, EC 1935/2004 has by and large superseded FDA because this standard has a wider and stricter criteria. For instance, it requires that compounds must be examined to more specific tests than FDA and requires traceability.
Meanwhile, there are three main design standards that apply to hygienic design: The CE Mark (The Machinery Directive) 2006/42/EC, A-3 and EHEDG. The Machinery Directive sets out very clearly the design considerations that need to be taken into account for a hygienically clean pump. Manufacturers can supplement the CE mark with certification from A-3 and EHEDG. At AVT Pump, we can CE mark an assembly or package for external motor powered pumps.
The American A-3 organisation has existed since the 1920’s and originally concentrated on the dairy and egg processing industries. Since then it has widened its scope to cover other applications. EHEDG is essentially the European version of A-3 in the same way that EC 1935/2004 is the European version of FDA. Likewise it is generally considered more comprehensive than A-3. However, both organisations have made considerable efforts over recent years to harmonise their standards.
If you need further information or advice on pump standards and compliance please just contact us.