Product Overview
The PFED Series, manufactured by Atos (Italy), is a fixed displacement double vane pump product line integrating two PFE series single pump cartridges into a single housing, featuring one common inlet port (IN port) and two independent outlet ports (OUT ports), driven by a common shaft to simultaneously power two independent hydraulic circuits.
The PFED-43 Series consists of one PFE-41 cartridge (Section 1/large displacement side) and one PFE-31 cartridge (Section 2/small displacement side). Section 1 displacement ranges from 29.3 to 85.3 ml/r, and Section 2 displacement ranges from 16.5 to 43.7 ml/r. The PFED Series achieves maximum operating pressures up to 210 bar.
The PFED-43070/016-1DVO features 070 (69.9 ml/r) and 016 (16.5 ml/r) cartridges, with a total displacement of 86.4 ml/r and 1DVO port configuration. The PFED-43045/016-1DTA features 045 (45.0 ml/r) and 016 (16.5 ml/r) cartridges, with a total displacement of 61.5 ml/r and 1DTA port configuration. The PFED-43070/016-1DUO features 070 (69.9 ml/r) and 016 (16.5 ml/r) cartridges, with a total displacement of 86.4 ml/r and 1DUO port configuration.
Our products are manufactured to be 100% interchangeable with Atos original specifications—a true “drop-in” replacement solution. Every unit undergoes 100% full-load and flow-matching testing under simulated operating conditions before shipment, ensuring volumetric efficiency, flow rate, and noise performance meet or exceed original specifications at rated pressure.
Technical Specifications
PFED-43070/016-1DVO
Product Type: Double Fixed Displacement Vane Pump
Brand: Atos (Italy)
Series: PFED-43 (PFE-41 + PFE-31 Cartridge Combination)
Section 1 Displacement (Front, PFE-41, Cartridge 070): 69.9 ml/r
Section 2 Displacement (Rear, PFE-31, Cartridge 016): 16.5 ml/r
Total Displacement: 86.4 ml/r
Rated Continuous Pressure: 210 bar
Maximum Intermittent Pressure: 250 bar
Rated Speed Range: 600 – 2500 r/min
Mounting: SAE B 2-Bolt Flange
Shaft Type: 25.38 mm Straight Shaft
Rotation: Bidirectional
Port Configuration: 1DVO
Seal Material: NBR
Net Weight: 24.5 kg
Inlet Port Size: 2.5 inch
Section 1 Outlet Port Size: 1 inch
Section 2 Outlet Port Size: 0.75 inch
Fluid Compatibility: Hydraulic oils per DIN 51524 and synthetic fluids
Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil
PFED-43045/016-1DTA
Product Type: Double Fixed Displacement Vane Pump
Brand: Atos (Italy)
Series: PFED-43 (PFE-41 + PFE-31 Cartridge Combination)
Section 1 Displacement (Front, PFE-41, Cartridge 045): 45.0 ml/r
Section 2 Displacement (Rear, PFE-31, Cartridge 016): 16.5 ml/r
Total Displacement: 61.5 ml/r
Rated Continuous Pressure: 210 bar
Maximum Intermittent Pressure: 250 bar
Rated Speed Range: 600 – 2500 r/min
Mounting: SAE B 2-Bolt Flange
Shaft Type: 22.22 mm Straight Shaft
Rotation: Bidirectional
Port Configuration: 1DTA
Seal Material: NBR
Net Weight: 24.5 kg
Fluid Compatibility: Hydraulic oils per DIN 51524 and synthetic fluids
Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil
PFED-43070/016-1DUO
Product Type: Double Fixed Displacement Vane Pump
Brand: Atos (Italy)
Series: PFED-43 (PFE-41 + PFE-31 Cartridge Combination)
Section 1 Displacement (Front, PFE-41, Cartridge 070): 69.9 ml/r
Section 2 Displacement (Rear, PFE-31, Cartridge 016): 16.5 ml/r
Total Displacement: 86.4 ml/r
Rated Continuous Pressure: 210 bar
Maximum Intermittent Pressure: 250 bar
Rated Speed Range: 600 – 2500 r/min
Mounting: SAE B 2-Bolt Flange
Shaft Type: 25.38 mm Straight Shaft
Rotation: Bidirectional
Port Configuration: 1DUO
Seal Material: NBR
Net Weight: 24.5 kg
Fluid Compatibility: Hydraulic oils per DIN 51524 and synthetic fluids
Recommended Viscosity: ISO VG32, VG46, or VG68 anti-wear hydraulic oil
Key Technical Advantages
1. Cartridge Design for Rapid Maintenance
The PFED Series features cartridge-type construction, allowing individual pump cartridges (stator, rotor, vanes, plates) to be replaced quickly and independently. On-site repairs or displacement changes can be completed in minutes without removing the entire pump from the system—dramatically reducing downtime and maintenance costs.
2. Double Pump Design – Single Power Source, Dual-Circuit Independent Control
The PFED Series integrates two PFE cartridges into a single housing driven by a common shaft. Featuring one common inlet port and two independent outlet ports, it simultaneously supplies hydraulic power to two separate circuits. This design enables more compact system layout, reducing installation space and cost.
3. High Pressure Capability and Wide Speed Range
The PFED Series achieves operating pressures up to 210 bar and speeds up to 2500 r/min. High-pressure capability allows the use of smaller actuators and lines, while the wide speed range enables the series to adapt to diverse applications—from low-speed high-torque to high-speed light-load operations.
4. Low Noise and Stable Flow Output
The PFE/PFED Series features optimized cam ring profiles and precision port plate designs, effectively reducing pressure ripple and operational noise. The low-noise characteristic makes these pumps the ideal choice for confined spaces in industrial workplaces.
5. Bidirectional Rotation for Flexible Installation
The PFED Series supports bidirectional rotation, allowing flexible selection of clockwise or counter-clockwise installation based on system layout requirements without pump modification.
6. Wide Displacement Range for Flexible Adaptation
PFED-43 Series Section 1 displacement ranges from 29.3 to 85.3 ml/r, and Section 2 from 16.5 to 43.7 ml/r. The extensive displacement combination options enable users to select the optimal configuration based on system flow requirements.
7. 100% Drop-In Interchangeability – Zero Retrofit Cost
Manufactured to exact Atos original specifications—mounting dimensions, port locations, and shaft configurations are identical to the original. Mounting complies with SAE B 2-Bolt Flange standards. No piping modifications or installation adapters are required for direct replacement.
Application Areas
Injection Molding Machines: PFED double pumps for high-pressure clamping and low-pressure injection/plasticizing dual-circuit systems
Die-Casting Machinery: Stable, pulse-free hydraulic power source for high-pressure metal forming
CNC Machine Tools & Machining Centers: Smooth hydraulic power for precision numerical control systems
Hydraulic Press Series: Four-column presses, shearing machines, bending machines, stamping presses
Forging Machinery: Forging presses, stamping presses, etc.
Construction Equipment: Hydraulic systems for various construction equipment
Primary Metals Machinery: Metal processing equipment
Industrial Power Units: Core power source for indoor hydraulic stations requiring high pressure and low noise
Expert Maintenance Tips
1. Model Identification and Selection
PFED-43070/016-1DVO: PFED = Double vane pump, 43 = PFED-43 series (PFE-41 + PFE-31), 070 = Section 1 displacement code (69.9 ml/r), 016 = Section 2 displacement code (16.5 ml/r), 1DVO = Port configuration and seal code.
PFED-43045/016-1DTA: 045 = Section 1 displacement code (45.0 ml/r), 016 = Section 2 displacement code (16.5 ml/r), 1DTA = Port configuration and seal code.
PFED-43070/016-1DUO: 070 = Section 1 displacement code (69.9 ml/r), 016 = Section 2 displacement code (16.5 ml/r), 1DUO = Port configuration and seal code.
Displacement Code Reference: PFE-41 series codes: 029=29.3, 037=36.6, 045=45.0, 056=55.8, 070=69.9, 085=85.3 ml/r; PFE-31 series codes: 016=16.5, 022=21.6, 028=28.1, 036=35.6, 044=43.7 ml/r.
2. Installation Precautions
Verify pump rotation direction matches system requirements—PFED Series supports bidirectional rotation.
Confirm mounting type matches—PFED Series uses SAE B 2-Bolt Flange mounting.
Confirm shaft type matches—PFED-43070 series shaft diameter 25.38 mm; PFED-43045 series shaft diameter 22.22 mm.
Suction piping should be as short as possible, minimizing unnecessary restrictions. Recommended suction line pressure range: -0.5 to 1.5 bar (for speeds ≤1800 r/min).
The pump housing must not bear piping loads; suction and discharge lines must have independent supports.
3. Pre-Startup Checklist
Verify oil level in the reservoir is adequate and fluid type is correct (ISO VG32, VG46, or VG68 anti-wear hydraulic oil recommended).
Confirm all piping connections are secure with no leakage.
Prime the pump by filling the housing with oil before first startup to prevent dry running.
Confirm both discharge ports are correctly connected to their respective hydraulic circuits.
4. Fluid Management
PFED Series is compatible with hydraulic oils per DIN 51524 and synthetic fluids with similar lubricating properties.
Fluid cleanliness should be maintained at NAS 9 or higher—contamination is the leading cause of premature vane pump failure.
Oil temperature should generally not exceed 55°C, with viscosity maintained between 17–37 mm²/s. Excessive viscosity may cause suction difficulties; insufficient viscosity will increase internal leakage.
Regularly check oil temperature and filter condition.
5. Scheduled Maintenance
Replace hydraulic oil and filters every 2000 operating hours or annually.
PFED Series features cartridge-type construction—cartridges can be replaced independently.
Cartridge replacement can be completed in minutes without removing the entire pump.
If flow drops or pressure becomes unstable, first inspect cartridge wear (stator inner surface, vanes, port plates, etc.)—replacing the cartridge kit restores performance.
