PVR Vane Pumps - Penn-Air & Hydraulics, Konstance Pneumatics ...

PVR SERIES VANE PUMPSHOW A VANE PUMP WORKSHow It WorksContinental Hydraulics’ variable volume, pressuredisplacement, pressure compensated vane pumpsare highly efficient and reliable sources of hydraulicpower. Figures 1 and 2 show how the moving camring provides variable volume and constant pressure.As the rotor turns clockwise, the volume between twoadjacent vanes (segment) increases at the suctionporting. When these segments enter the pressureport area, the volume is reduced and forces the fluidout through the pressure port.Maximum output occurs when the cam is in theextreme eccentric position (Figure 1). When systemrequirements are less than maximum pump output,system pressure forces the ring up (against thespring), reducing eccentricity and resulting in lessflow.Constant pressure from zero to full displacement ismaintained by the spring. When system volumedemand falls to zero, the system pressure drives thering to a concentric position (Figure 2). This changesthe displacement to zero while system pressure ismaintained.Quiet OperationGeometry of porting combined with precision-fittingvanes and moving parts make Continental pumpsamong the most quiet in the industry. Sound levelsrange from below 68 dBa for 6 gpm models whentested in accordance with NFPA RecommendedStandard T3.9.1M-1970 (R1981).A More Efficient PumpContinental pumps produce only the flow the systemdemands at any one time. This results in less heatgeneration, fewer system components, smaller or noheat exchanger and does not require a high pressurebypass. The result is a simpler, more energy efficientsystem that accurately and efficiently matches fluidpower volume to the task while maintaining constantpressure in the system.Options and AccessoriesContinental pumps may be tandem mounted toachieve multiple pump operation from a single powersource for separate or auxiliary circuits. Pumpoptions include handwheel pressure and volumecontrols; dual volume and dual pressure controlcombinations, plus a variety of mountingarrangements.PressurePressureSuctionFigure 1SuctionFigure 22CONTINENTAL HYDRAULICS VANE PUMPS