VPPL VARIABLE DISPLACEMENT AXIAL-PISTON PUMPS FOR INTERMEDIATE PRESSURE SERIES 10

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1 / ED VPPL VARIABLE DISPLACEMENT AXIAL-PISTON PUMPS FOR INTERMEDIATE PRESSURE SERIES OPERATING PRINCIPLE The VPPL are variable displacement axial-piston pumps with variable swash plate, suitable for applications with open circuits and intermediate pressures. They are available in five nominal sizes, with displacements of,,, and cm /rev. The pump flow rate is proportional to the rotation speed and to the angle of the swash plate, which can be continuously modulated. The maximum and minimum angle can be limited mechanically via suitable regulating screws. They are usually supplied with a SAE J -hole flange and a SAE J cylindrical with key shaft. They are available with three different types of regulating control, each according to the application needs. TECHNICAL SPECIFICATIONS VPPL PUMP SIZE Maximum displacement Flow rate at rpm Operating pressures Rotation speed Rotation direction Hydraulic connection Type of mounting cm /rev lt/min bar rpm 9 max - min clockwise (seen from the shaft side) SAE flange SAEflange J - holes Oil volume in the pump body dm Mass kg,,, Ambient temperature range C - / + HYDRAULIC SYMBOL Fluid temperature range C / + Recommended viscosity cst Fluid contamination degree see par.. / ED /

2 SERIES - IDENTIFICATION CODE V P P L - - R / N Variable displacement axial piston pump for intermediate pressure Pump size: = cm /rev = cm /rev = cm /rev = cm /rev = cm /rev NBR sealing rings for mineral oils Series no: (the overall and mounting dimensions remain unchanged from to 9) Regulator type: PC = pressure regulator bar PCR = remote-controlled pressure regulator PC = pressure and flow rate regulator Hydraulic connection S = suction / delivery: SAE flange with metric bolts drainage with NPT threaded ports N = NPT threaded ports (only for size) Clockwise rotation (seen from the shaft side) Shaft end type: cylindrical with key SAE J SAE flange J - holes - HYDRAULIC FLUID. - Fluid type Use mineral oil based hydraulic fluids, type HH, HL or HM according to ISO- standards.. - Fluid viscosity The operating fluid viscosity must be within the following range: minimum viscosity cst referred to a maximum temperature of 9 C for the drainage fluid optimum viscosity / cst referred to the operating temperature of the fluid in the tank maximum viscosity cst limited only to the cold start-up of the pump, which has to be carried out with the plant at minimum pressure. When selecting the fluid type, be sure that the true viscosity is within the range specified above at the operating temperature.. - Degree of fluid contamination The maximum degree of fluid contamination must be according to NAS class 9; therefore the use of a delivery or return filter with β is suggested. A degree of maximum fluid contamination according to NAS class is recommended for optimum endurance of the pump. Hence, the use of a filter with β is recommended. For the installation of filters on the suction line, see par.. The suction filter must be equipped with a by-pass valve and, if possible, with a clogging indicator and should be oversized to avoid cavitation problems. / ED /

3 SERIES - CHARACTERISTIC CURVES. - VPPL- PUMP CHARACTERISTIC CURVES (values obtained with mineral oil with viscosity of cst at C) FLOW RATE / PRESSURE CURVES VOLUMETRIC AND TOTAL EFFICIENCY rpm rpm rpm rpm Efficiency n nv (%) 9 rev rev Volumetric efficiency nv Total efficiency nv rev rev ABSORBED POWER NOISE LEVEL [db(a)] =. l/min = l/min = l/min = l/min = l/min Max. input / rev rev rev INPUT POWER AT FULL CUT-OFF. DRAIN FLOW RATE... rev rev Full Flow / ED /

4 SERIES. - VPPL- PUMP CHARACTERISTIC CURVES (values obtained with mineral oil with viscosity of cst at C) FLOW RATE / PRESSURE CURVES VOLUMETRIC AND TOTAL EFFICIENCY rev rev rev rev Efficiency n nv (%) 9 rev rev Volumetric efficiency nv Total efficiency nv rev rev ABSORBED POWER NOISE LEVEL [db(a)] = l/min = l/min = l/min = l/min = l/min Max. input rpm rpm INPUT POWER AT FULL CUT-OFF DRAIN FLOW RATE.... rpm rpm Full Flow / ED /

5 SERIES. - VPPL- PUMP CHARACTERISTIC CURVES (values obtained with mineral oil with viscosity of cst at C) FLOW RATE / PRESSURE CURVES VOLUMETRIC AND TOTAL EFFICIENCY rpm rpm rpm rpm Efficiency n nv (%) 9 rpm rpm Volumetric efficiency nv Total efficiency nv rpm rpm ABSORBED POWER NOISE LEVEL = l/min = l/min = l/min = l/min = l/min [db(a)] Max. input rev rev INPUT POWER AT FULL CUT-OFF DRAIN FLOW RATE... rev. rev Full Flow / ED /

6 SERIES. - VPPL- PUMP CHARACTERISTIC CURVES (values obtained with mineral oil with viscosity of cst at C) FLOW RATE / PRESSURE CURVES VOLUMETRIC AND TOTAL EFFICIENCY rev rev rev rev Efficiency n nv (%) 9 rev rev Volumetric efficiency nv Total efficiency nv rev rev ABSORBED POWER NOISE LEVEL = l/min = l/min = l/min = l/min [db(a)] Max. input rev rev INPUT POWER AT FULL CUT-OFF DRAIN FLOW RATE rev rev Full Flow / ED /

7 SERIES. - VPPL- PUMP CHARACTERISTIC CURVES (values obtained with mineral oil with viscosity of cst at C) FLOW RATE / PRESSURE CURVES VOLUMETRIC AND TOTAL EFFICIENCY rev rev rev rev Efficiency n nv (%) 9 rev rev Volumetric efficiency nv Total efficiency nv rev rev ABSORBED POWER NOISE LEVEL = l/min = l/min = l/min = l/min = l/min [db(a)] Max. input rev rev INPUT POWER AT FULL CUT-OFF DRAIN FLOW RATE rev rev Full Flow / ED /

8 SERIES - TYPES OF REGULATORS. - PRESSURE REGULATOR: PC The PC pressure regulator keeps the pressure at a constant set level in the circuit, thus adjusting automatically the pump flow rate according to the real need of the system. The desired pressure can be set by manually adjusting the P regulation valve. The clockwise rotation of the adjustment bolt makes the pressure increase. FEATURES OF THE PC REGULATOR: - P pressure adjustment range = bar.- REMOTE-CONTROLLED PRESSURE REGULATOR: PCR Not Escluso included dalla in fornitura the supply OUT X The PCR regulator allows a remote-control of the device via a remote control connected to the X port (typical application for submerged pumps). In case a pressure regulating valve is used for the remote-control, it is suggested to use a direct operated valve with a size suitable to, l/min pilot flow rate. Note: The maximum length of the connection between the valve and X port of the pump must not be longer than m. FEATURES OF THE PCR REGULATOR: IN D D - remote-adjustment pressure = bar - flow rate available on the X port for the remote-control = about, l/min (approx.). - PRESSURE AND FLOW RATE REGULATOR: PC Not included in the supply This regulator, in addition to the pressure adjustment (as for the PC model), allows the pump flow rate control, according to the p pressure drop measured on either side of a throttle valve installed on the user line. Note: The connection pipe between the X port and the flow line downstream the restrictor (or valve) must always be made (customer charge). FEATURES OF THE PC REGULATOR: - P pressure adjustment range = - differential pressure adjustment range = bar - minimum delivery pressure = bar / ED /

9 SERIES - VPPL- PUMPS OVERALL AND MOUNTING DIMENSIONS VPPL-PC PUMPS 9 (MAX).(MAX) 9.., Key ø. -. OUT IN ø9. -. ø. -. VPPL-PCR PUMPS 9. 9 Suction port IN: / NPT Delivery port OUT: / NPT dimensions in mm Pressure adjustment bolt (for PC version) VPPL-PC PUMPS Filling plug Flow adjustment bolt 9 9. Drainage port: / NPT Differential pressure (not adjustable) 9 Pressure remote-setting port (for PCR version): / NPT Load Sensing port (for PC version): / NPT Pressure adjustment bolt (for PC version) / ED 9/

10 SERIES - VPPL- and VPPL- PUMPS OVERALL AND MOUNTING DIMENSIONS VPPL-PC and VPPL-PC PUMPS (MAX) Key. -. ø. -. OUT IN ø. fori Mx ø9. -. ø. -. VPPL-PCR and VPPL-PCR PUMPS dimensions in mm Suction port IN: SAE flange (see par. 9) Delivery port OUT: SAE / flange (see par. 9) Pressure adjustment bolt (for PC version) VPPL-PC and VPPL-PC PUMPS Filling plug Flow adjustment bolt 9 Drainage port: / NPT Differential pressure (not adjustable) 9 Pressure remote-setting port (for PCR version): / NPT Load Sensing port (for PC version): / NPT Pressure adjustment bolt (for PC version) / ED /

11 SERIES - VPPL- and VPPL- PUMPS OVERALL AND MOUNTING DIMENSIONS VPPL-PC and VPPL-PC PUMPS (MAX) (MAX) 9 (MIN) +. Key ø. -. OUT IN ø fori Mx. 9 ø. -. ø. -. VPPL-PCR and VPPL-PCR PUMPS 9 dimensions in mm Suction port IN: SAE / flange (see par. 9) Delivery OUT: SAE flange (see par. 9) Pressure adjustment bolt (for PC version) VPPL-PC and VPPL-PC PUMPS Filling plug 9 Flow adjustment bolt Drainage port: / NPT Differential pressure (not adjustable) 9 Pressure remote-setting port (for PCR version): / NPT 9 Load Sensing port (for PC version): / NPT Pressure adjustment bolt (for PC version) / ED /

12 SERIES - INSTALLATION - The VPPL pumps can be installed both in a horizontal and vertical position, with the shaft in an upward position. Note: The drainage port has to be oriented so that the oil level inside the pump body is never lower than / of its volume. - In the case of installation above the oil level, check that the min. suction pressure is not lower than -. bars (relative). If a low noise emission level is required, the installation inside the tank is suggested. In case of an installation inside the tank, with an oil level which does not grant complete pump submersion, it is suggested that the drain tube is adjusted so that the pump higher bearing can be always lubricated. - Before starting, the pump body has to be filled with the fluid. - Check the rotation direction of the pump. - It is necessary to vent the air from the delivery connection before operating it the first time. If the air venting should be difficult, the use of a venting valve is recommended. The pump start up, especially at a cold temperature, should occur with the plant at minimum pressure. -The suction tube has to be suitably sized so that the suction pressure is never lower than -. bar (relative). Bends or restrictions or an excessive tube length could further decrease the value of the suction pressure with a following increase in the noise emissions and a decrease in the pump lifetime. - The drainage tube has to be sized so that the pressure inside the pump body is always lower than. bars (relative), even during the dynamic change and flow rate phases. The minimum piping size is / for the pump type, and, while it should be at least / for the pumps type and. The drainage tube has to unload inside the tank far from the suction area. - No check valves allowed on the suction line. As for details and the installation of filter elements, see par... - The motor-pump connection must be carried out directly with a flexible coupling, to reduce at the minimum the axial and radial loads on the pump shaft. The alignment tolerance between the two shafts must be within, mm. 9 - SAE CONNECTION FLANGES dimensions in mm Flange Flange p max code description [bar] A B C D E F G H 9 SAE - / / BSP 9 9,, SAE - BSP,, SAE - / / BSP,, L 9 bolts M x OR OR OR Bolts and O-rings must be ordered separately. DUPLOMATIC OLEODINAMICA SpA LEGNANO (MI) - P.le Bozzi, / Via Edison Tel. / - Fax / / ED REPRODUCTION IS FORBIDDEN, THE COMPANY RESERVED THE RIGHT TO APPLY ANY MODIFICATIONS /