IVP21-- Series No. 25-- shaft pump flow code: Theoretical displacement ml / r: 67 12 - Cover end pump flow code: Theoretical displacement ml / r: 40 1-- shaft extension: 1-1 keys, flat keys 86- reload A-- first oil outlet location: A- B- in the inlet opposite the inlet counter-clockwise 90 ° C- D- in the inlet at the inlet in the ipsilateral clockwise rotation of 90 ° A-- second oil outlet location: A- second oil outlet rotating counterclockwise from the inlet 135 ° B- second oil port rotation 45 ° C- section counterclockwise from the inlet Second, the oil port rotated 45 ° clockwise from the inlet D- second oil outlet from the inlet clockwise rotation of 135 ° 10-- design number