API Standard 610 specifies requirements for centrifugal pumps, including pumps running in reverse as hydraulic power recovery turbines, for use in petroleum, petrochemical, and gas industry process services. It does not cover sealless pumps. 610 is applicable to overhung pumps, between-bearings pumps, and vertically-suspended pumps. Clause 8 applies to specific types of pumps. All other clauses of this Standard apply to all pump types. This Standard is Technically Equivalent to the ISO Final Draft International Standard 13709.