CLYDEUNION PUMPS access_time10 June 2019 mode_comment0 CUP-OH2 CUP-OH2 - Single stage, API end suction pump. The ClydeUnion Pumps CUP-OH2 pump is a heavy duty, single stage, radially split, overhung, end suction machine, designed and manufactured to the latest edition of API 610. read more Read More admin