Your manual is ready for immediate download. 19. Classic 2000 Series Axial Piston Pumps PV-2012 Series 20/21 Service Parts Manual This manual provides information on PV-2012 Design Series 20/21 Variable Delivery Piston Pumps. Please enter the following information. Name* Email* Phone*We cannot respond to your inquiry if the phone number is invalid.* all fields required & information private EmailThis field is for validation purposes and should be left unchanged. This iframe contains the logic required to handle Ajax powered Gravity Forms.