PV270R1K1T1NFPZ Parker PVplus Piston Pump 270cc 350bar

Product Overview

The PV270R1K1T1NFPZ is a Parker Hannifin PVplus (PV+) Series Frame Size 5 open-circuit variable displacement axial piston pump with a nominal displacement of 270 cm³/rev (16.4 in³/rev), rated continuous working pressure of 350 bar (5000 psi), intermittent peak pressure capability of 420 bar (6092 psi), maximum speed of 1800 rpm, minimum speed of 50 rpm, theoretical flow of 405 L/min at 1500 rpm, output flow of approximately 484 L/min (128 GPM) at 1800 rpm, maximum input power of approximately 298 kW (400 HP) at 1800 rpm and 350 bar, input torque of 585 N·m, moment of inertia of 0.098 kg·m², and weight of approximately 172 kg. The pump employs a swashplate-type axial piston variable mechanism, specifically designed for open-circuit high-pressure heavy-duty applications, and is one of the largest displacement sizes in the PVplus series.

The PV270R1K1T1NFPZ model code decodes as follows: “PV” represents the Parker PVplus Series variable piston pump; “270” denotes nominal displacement of 270 cm³/rev; “R” indicates right-hand rotation (clockwise, viewed from shaft end); “1K1” specifies the Frame Size 5 standard pressure compensator control (DR type), automatically reducing displacement to only leakage flow when system pressure reaches the set point for constant pressure holding and energy-efficient operation; “T1” specifies NBR rubber shaft seal and metric ports; “N” specifies ISO 3019 metric flange with keyed drive shaft; “FPZ” specifies port and control configuration codes corresponding to SAE-E mounting flange and standard side port layout.

The pump features an SAE-E four-bolt mounting flange (ISO 3019-1 165-4) with a hole circle diameter of 165.1 mm and an SAE E 2-inch keyed shaft, right-hand rotation configuration. The housing is constructed from high-strength cast iron with FEM-optimized design, incorporating the patented Pre-Compression Chamber technology to effectively reduce pressure pulsation and noise emissions. The pump supports 100% through-drive capability, enabling tandem installation of same-series pumps or gear pumps on the rear of the main pump for compact integration of multi-circuit hydraulic systems.

The PVplus Series covers displacements from 16 to 360 cm³/rev, including PV016, PV020, PV023, PV028, PV032, PV040, PV046, PV063, PV080, PV092, PV140, PV180, PV270, and PV360. The PV270R1K1T1NFPZ features mounting flange, shaft specifications, and port layouts conforming to Parker PVplus Frame Size 5 standards, enabling drop-in interchangeability with other PV270 configurations of the same frame without modifying mounting interfaces or plumbing layouts.

Every PV270R1K1T1NFPZ undergoes 100% simulated duty-cycle testing prior to shipment — covering pressure holding, flow output, compensator response, and internal leakage — ensuring complete drop-in interchangeability with original Parker products.

Technical Specifications

• Model: PV270R1K1T1NFPZ

• Brand: Parker Hannifin

• Series: PVplus (PV+) Series, Frame Size 5

• Pump Type: Open-circuit swashplate axial variable displacement piston pump

• Nominal Displacement: 270 cm³/rev (16.4 in³/rev)

• Rated Continuous Working Pressure: 350 bar (5000 psi / 35 MPa)

• Intermittent Peak Pressure (20% duty cycle): 420 bar (6092 psi)

• Maximum Speed: 1800 rpm

• Minimum Speed: 50 rpm

• Theoretical Flow at 1500 rpm: 405 L/min

• Output Flow at 1800 rpm: Approx. 484 L/min (128 GPM)

• Maximum Input Power at 350 bar (1800 rpm): Approx. 298 kW (400 HP)

• Input Torque at 350 bar: 585 N·m

• Moment of Inertia: 0.098 kg·m² (98000 kg·mm²)

• Control Type: 1K1 standard pressure compensator control (DR type), constant pressure variable

• Pressure Adjustment Range: 15–350 bar (factory setting 50 bar)

• Minimum Compensator Pressure: 12–15 bar

• Direction of Rotation: R (clockwise, viewed from shaft end)

• Mounting Flange: SAE-E four-bolt flange (ISO 3019-1 165-4, hole circle dia. 165.1 mm)

• Shaft Type: SAE E 2-inch keyed shaft

• Port Layout: Standard side ports (inlet and outlet arranged laterally)

• Seals: NBR (Nitrile), shaft seal FKM (Fluoroelastomer)

• Housing Material: High-strength cast iron, FEM optimized

• Weight: Approx. 172 kg

• Case Drain Ports: 1× 1-5/8″-12 UNF (L1), 2× 1-5/8″-12 UNF (L2 & L3)

• Bearing Flushing Port: 1× 7/16″-20 UNF (L4)

• Case Drain Pressure (continuous): 0.5 bar

• Fluid Cleanliness Requirement: ISO 20/18/15

• Optimum Viscosity Range: 16–100 cSt (max. start-up viscosity 1000 cSt)

• Recommended Fluid: ISO VG46 / VG68 anti-wear hydraulic oil (HM/HV)

• Through-Drive Capability: Yes, 100% nominal torque transmission

PVplus Series Same-Family Displacement Reference (350 bar rated conditions):

• PV016: 16 cm³/rev, flow at 1800 rpm 8 GPM (30 L/min), input power 25 HP (19 kW), max 3000 rpm

• PV020: 20 cm³/rev, flow at 1800 rpm 9.5 GPM (36 L/min), input power 31 HP (23 kW), max 3000 rpm

• PV032: 32 cm³/rev, flow at 1800 rpm 15 GPM (57 L/min), input power 47 HP (35 kW), max 2800 rpm

• PV046: 46 cm³/rev, flow at 1800 rpm 22 GPM (83 L/min), input power 67 HP (50 kW), max 2800 rpm

• PV063: 63 cm³/rev, flow at 1800 rpm 30 GPM (114 L/min), input power 94 HP (70 kW), max 2800 rpm

• PV080: 80 cm³/rev, flow at 1800 rpm 38 GPM (144 L/min), input power 120 HP (89 kW), max 2500 rpm

• PV092: 92 cm³/rev, flow at 1800 rpm 44 GPM (167 L/min), input power 184 HP (137 kW), max 2300 rpm

• PV140: 140 cm³/rev, flow at 1800 rpm 67 GPM (254 L/min), input power 200 HP (149 kW), max 2400 rpm

• PV180: 180 cm³/rev, flow at 1800 rpm 86 GPM (326 L/min), input power 282 HP (210 kW), max 2200 rpm

• PV270: 270 cm³/rev, flow at 1800 rpm 128 GPM (484 L/min), input power 400 HP (298 kW), max 1800 rpm

Data based on Parker PVplus Series official technical specifications.

Key Technical Advantages

1. 350 bar High-Pressure Capability and High Power Density — Industry-Leading Power Density Ratio

The PV270R1K1T1NFPZ delivers a rated continuous working pressure of 350 bar and intermittent peak of 420 bar, with power density leading among comparable open-circuit variable piston pumps. The 270 cm³/rev displacement combined with 1800 rpm maximum speed provides output flow of approximately 484 L/min at 1800 rpm, maximum input power of approximately 298 kW (400 HP) at 350 bar, and input torque of 585 N·m, delivering robust hydraulic power output within a compact installation envelope. The swashplate axial piston design with optimized rotary group and FEM-optimized housing structure achieves long-term reliable operation at high power density, weighing approximately 172 kg as one of the largest displacement sizes in the PVplus series.

2. 1K1 Standard Pressure Compensator Control — Precise Constant Pressure Holding and Energy Savings

The PV270R1K1T1NFPZ is equipped with 1K1 standard pressure compensator control (DR type) with a pressure adjustment range of 15–350 bar, factory setting of 50 bar, and minimum compensator pressure of 12–15 bar. When system pressure reaches the set point, the pump automatically reduces displacement to only leakage flow, achieving constant pressure holding and eliminating relief losses for significant system heat and energy reduction. The large control piston design ensures fast dynamic response, suitable for heavy-duty applications with frequent load changes. The modular control design supports rapid field replacement of control modules without pump disassembly, with optional M (standard pressure control), MR (remote pressure control), MF (load sensing control), and MT (two spool LS control) options.

3. Patented Pre-Compression Chamber Technology — Pressure Pulsation and Noise Suppression

The PVplus Series features a standard integrated Pre-Compression Chamber, a Parker patented technology that effectively reduces pressure and flow pulsation through optimized commutation area volume design, significantly suppressing pump noise emissions. The 9-piston design combined with pre-compression volume technology reduces flow pulsation to unprecedented minimum levels, making PVplus one of the quietest piston pumps available. The high-strength cast iron housing is FEM-optimized to further reduce noise levels and structural vibration, particularly suitable for metallurgical workshops, heavy-duty presses, and other industrial environments with stringent noise and pressure stability requirements.

4. High-Strength Cast Iron Housing and SAE-E Four-Bolt Flange — Reliable Heavy-Duty Operation

The pump housing is constructed from high-strength cast iron with Finite Element Analysis (FEA) optimized design, ensuring structural rigidity and operational reliability at 350 bar continuous working pressure. The SAE-E four-bolt mounting flange (ISO 3019-1 165-4, hole circle diameter 165.1 mm) and SAE E 2-inch keyed shaft are standard configurations, with standard side port layout (inlet and outlet arranged laterally) facilitating plumbing routing and maintenance. 100% through-drive capability supports tandem installation of same-series pumps or gear pumps, with the through-drive interface being SAE E-4 (diameter 165.1 mm) for compact system configurations driven by a single prime mover.

5. Exceptional Field Interchangeability and Flexible Modular Selection

The PV270R1K1T1NFPZ features SAE-E four-bolt mounting flange, SAE E 2-inch keyed shaft, and side port layouts conforming to Parker PVplus Frame Size 5 standards, enabling drop-in interchangeability with other PV270 configurations of the same frame. The PVplus Series covers a wide displacement range of 16–360 cm³/rev within a shared mounting flange system, offering 1K1 (standard pressure compensator), 1K8 (with NG6 valve interface), MMC (standard pressure compensator), M (remote pressure control), MF (load sensing), and other control options, as well as HP (horsepower) and HP-LS (horsepower + load sensing) power control options for flexible selection in system design and equipment maintenance.

Application Areas

• Metallurgical Equipment: Hot/cold rolling auxiliary hydraulic stations, steel billet shears, aluminum profile extrusion main pump stations, heavy-duty forging hydraulic presses

• Heavy-Duty Construction Machinery: Large mining hydraulic stations, pile driving machine main pumps, railway maintenance machinery hydraulic sources

• Marine and Offshore: Dock crane winch hydraulic systems, marine deck crane winches, auxiliary hydraulic stations for ships

• Hydraulic Presses: Large-tonnage four-column hydraulic presses and frame-type hydraulic press power sources

• Special Hydraulic Units: High-power customized HPU hydraulic pump stations, large-scale material stamping and forming equipment, rock and soil engineering drilling rig main pumps

• Injection Molding and Die-Casting Machines: Main hydraulic pumps for large injection molding and die-casting machines

• Port Machinery: Port crane and reach stacker hydraulic power systems

The PV270R1K1T1NFPZ is ideally suited for heavy-duty industrial hydraulic systems requiring 350 bar continuous working pressure and displacements in the 270 cm³/rev range — the classic configuration for metallurgical equipment and heavy-duty press hydraulic power units.

Expert Maintenance Tips

1. Shaft Alignment and Coupling Requirements

Maintain concentricity between the pump shaft and drive shaft within 0.05 mm. Flexible couplings are strongly recommended to accommodate minor angular misalignment. The PV270R1K1T1NFPZ weighs approximately 172 kg — use appropriate lifting equipment during installation, with eye bolts installed on the pump body, and never strike the shaft end. Tighten SAE-E four-bolt mounting flange bolts in diagonal sequence to the specified torque. The SAE E 2-inch keyed shaft engagement with the drive coupling should ensure sufficient keyway engagement length. Couplings must be equipped with protective guards. Motor-to-pump shaft alignment should be checked after installation and again after 500 hours of operation.

2. Pre-Start Priming Procedure (Mandatory)

Before initial startup, the pump must be slowly filled through the case drain port (L1) with clean hydraulic oil to ensure adequate lubrication, cooling, and sealing during startup. Operating an axial piston pump dry — even for a few seconds — will score the swashplate, valve plate, and piston slippers, causing immediate total pressure loss and irreversible damage. Start the pump in jog mode until the pump and piping are sufficiently filled and vented. After complete venting, run at low pressure for 5–10 minutes, then gradually increase to rated pressure. The case drain must be on top of the pump, with a separate line unrestricted to the reservoir extending below the oil level. Case drain pressure must not exceed 0.5 bar continuous.

3. Pressure Compensator Setting and Adjustment

The 1K1 standard pressure compensator has a pressure adjustment range of 15–350 bar, factory setting of 50 bar, and minimum compensator pressure of 12–15 bar. During commissioning, first loosen the lock nut, then rotate the adjustment screw with an Allen key; clockwise rotation increases compensating pressure. Adjustment must be performed with the pump at full displacement and low operating pressure to avoid system pressure oscillation. In multi-pump systems, stagger the compensator settings. To change control mode (e.g., from standard pressure compensation to remote pressure control or load sensing control), use the corresponding modular control cover for replacement without pump disassembly.

4. Fluid Cleanliness and Filtration

The PV270R1K1T1NFPZ requires fluid cleanliness of ISO 20/18/15 (SAE Class 4) with 10 μm system filtration. Use pressure line filters with a filtration ratio β10 ≥ 75 (per ISO 4572). Avoid suction filters, which increase suction resistance and cavitation risk. Install a breather filter with filtration accuracy ≤10 μm on the reservoir and regularly check oil level and fluid condition. ISO VG46 or VG68 anti-wear hydraulic oil is recommended, with optimum viscosity range of 16–100 cSt and maximum start-up viscosity of 1000 cSt. The case drain line should be independently routed to the reservoir, avoiding shared return lines.

5. Restart Procedure After Extended Shutdown

If the pump has been idle for more than 30 days, manually rotate the shaft several turns to verify free rotation before restarting. Check for abnormal leakage at the case drain port. After startup, operate at low pressure for 10–15 minutes until oil temperature reaches normal operating range before applying full load. Regularly inspect the keyed shaft and drive coupling engagement during operation, ensuring sufficient keyway engagement length. Periodically check the pressure compensator operation to ensure proper pressure limiting function, and verify that case drain flow (L2 & L3) and bearing flushing flow (L4) remain within normal ranges.