PVM Series Variable Displacement Open Circuit Piston Pumps

Danfoss PVM Series pumps are open circuit, axial piston designs. A variety of control options allows the pumps to perform most efficiently in a specific application. Efficiency of the pump controls allows down-sizing of system cooling needs, saving up front cost in the machine. Alternatively, cooling capacity could be kept the same and the flow capability of the system increased, thus improving performance and customer satisfaction.

• Contains a strong proven rotating group allowing the pumps to handle pressures to 315 bar (4568 psi) continuous with less maintenance cost. High-load bearings and a stiff drive shaft help provide very long life at rated industrial conditions, reducing operating costs and extending operating life.
• Features a saddle-type yoke with steel-backed polymer bearings. The stiff yoke reduces deflection and allows even loading of bearings, improving life. A single control piston reduces loading on the yoke, resulting in reduced pump size which allows installation in tighter locations.
• Operate at a level of quietness that exceeds the requirements of today’s demanding work conditions. The pumps feature a unique three-piece envelope (flange, housing and valve block) specifically created for low fluid-borne and structure-borne noise levels. Another pump feature - a bimetal timing plate - improves pump filling characteristics which, in turn, reduce fluid-borne noise and extend pump life.
• Reduce, or in some cases remove, the need for damping barriers between the noise source and the operator. This saves money on the installed cost of the system while improving customer comfort.
• An adjustable maximum stop provides a means of tuning flow to your system, while gauge ports allow monitoring of inlet and outlet conditions. These standard features reduce system complexity and cost.
• Mounting flanges are offered in SAE and ISO configurations, and ports are offered in SAE, ISO, and BSPP in both tube and flange versions. This provides a wide variety of installation opportunities for global machine design.
• Side or end-ported models are available to facilitate plumbing and help fit the pump to your machine space needs. Multiple drain ports allow many mounting orientations, reducing installed costs.
• Capable of operating with many types of hydraulic fluids used in industrial systems. High-water-content and phosphate ester fluids can be accommodated, in addition to the typical petroleum based and synthetic fluids.

Features and Benefits:

• Bell shaped housing contains fluid borne sound and reduces operator fatigue
• Standard adjustable maximum volume screw and gage ports give the ultimate in flexibility to the engineer or service technician
• High overall efficiency reduces operating costs
• Robust shaft bearings extends operating life and lowers maintenance costs
• Multiple port type and locations aid in flexibility of machine design
• Very low pressure ripple reduces shock in the system resulting in fewer leaks

Typical Applications

• Mining machinery
• Injection molding machines
• Metal forming machines
• Oil and Gas Equipment
• Conveyor lines
• Primary metals
• Metal cutting equipment