Acquisition Of A Ductile Iron Valve For The Subproject: Improvement And Expansion Of The Water Service Of The Irrigation System In The Community Of Argama Alta, District Of Pacucha - Andahuaylas - Apurimac. - Acquisition Of Ductile Iron Valve For The Sub Project: Improvement And Expansion Of The Water Service Of The Irrigation System In The Community Of Argama Alta, District Of Pacucha - Andahuaylas - Apurimac.