PARKER

Parker PVP3336R2H21 Variable Volume Piston Pump

The Parker PVP3336R2H21 variable volume piston pump is a medium-pressure hydraulic piston pump from Parker Hannifin’s PVP series. It is designed for hydraulic systems that require variable displacement, pressure control and reliable pump performance in industrial and mobile hydraulic applications. For accurate purchasing and replacement, the complete model should always be used: PVP3336R2H21.

According to Parker official PVP series technical data, the PVP33 pump frame has a displacement of 33.0 cm³/rev. The data table lists pump delivery of 39.4 L/min at 1200 rpm and 59.0 L/min at 1800 rpm under the stated catalog conditions. Parker also lists the maximum operating pressure rating as 248 bar / 3600 PSI and the maximum operating speed as 3000 rpm for the PVP33 series. These official values make the PVP33 frame suitable for hydraulic power units and equipment requiring stable medium-pressure piston pump performance.

The full model code PVP3336R2H21 is important because Parker PVP pumps are available with different displacements, pressure ranges, rotation directions, port arrangements, shaft options, control options, seals, painting options and through-shaft configurations. The PVP33 section identifies the 33 cm³/rev displacement frame. The 36 code refers to the 17–248 bar / 250–3600 PSI pressure range in Parker’s ordering information. The R code indicates clockwise rotation when viewed from the shaft end. The H control code is associated with pressure compensated and power control in the Parker PVP ordering structure.

The Parker PVP3336R2H21 piston pump works by varying the swash plate angle inside the pump. Parker technical information explains that the pump output flow depends on the stroke length of the pistons, and the piston stroke is controlled by the position of the swash plate. When the swash plate angle increases, pump displacement and flow increase. When the swash plate moves toward the zero-stroke position, flow is reduced. This variable-volume design allows the pump to respond to hydraulic system demand more efficiently than a fixed-displacement pump.

Parker PVP series pumps are designed with a strong cast-iron housing, replaceable bronze port plate, replaceable piston slipper plate, fast response characteristics, low noise level and multiple control options. These features support demanding hydraulic applications where durability, serviceability and controlled output are important. The series includes pressure compensation, load sensing, horsepower limiting, horsepower and load sensing, remote pressure compensation, adjustable maximum volume stop and low-pressure standby options, depending on the exact model configuration.

The PVP3336R2H21 variable volume piston pump may be used in hydraulic power units, presses, machine tools, industrial machinery, test equipment, mobile hydraulic systems and other applications requiring pressure-controlled pump output. Because this is a variable displacement piston pump, the replacement pump must match the machine requirements for displacement, pressure range, control type, rotation direction, shaft, ports, seals and mounting arrangement.

For procurement teams and maintenance engineers, the key purchasing reference is the exact model Parker PVP3336R2H21. Short descriptions such as “PVP33 pump” or “Parker piston pump” are not enough for accurate replacement. Similar Parker PVP pumps may have the same displacement but different pressure ranges, shaft types, control options or port configurations. Even a small suffix difference can affect installation compatibility and hydraulic performance.

Before ordering the Parker PVP3336R2H21 variable volume piston pump, buyers should compare the pump nameplate, hydraulic schematic, shaft interface, port layout, rotation direction and control option against the original machine documentation. If the pump is installed on existing equipment, clear photos of the nameplate, shaft side, port side, control block and mounting flange can help confirm the correct replacement.

This product page is prepared for international buyers who need a clear purchasing reference for Parker PVP3336R2H21. If this pump is required for urgent downtime repair, scheduled maintenance or spare-parts stock, please provide the full model code, required quantity, destination country and preferred delivery term when sending an inquiry. Correct model identification helps reduce quotation delays and avoids ordering a non-matching hydraulic piston pump.

Hydraulics Worldwide supplies hydraulic pumps, valves and industrial spare parts for global customers. If you are sourcing the Parker PVP3336R2H21 variable volume piston pump, send us the complete model code and quantity for quotation support. You can also browse more hydraulic components from Hydraulics Worldwide or verify the manufacturer reference in the Parker official PVP series product page.

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