scope:

This Standard covers class II requirements for centrifugal pumps of back pull-out construction as used primarily in the chemical and petrochemical industries. However the Standard, or individual clauses of it, can be applied in other industries, for general industrial use or to pump designs other than of back pull-out construction. Pumps as specified in ISO 2858 are typical of those conforming to this Standard. This Standard includes design features concerned with installation, maintenance and safety for these pumps, including baseplate couplings and auxiliary piping but excluding the driver.