| Weight | 18 lbs |
|---|---|
| Pump Mounting Flange | 2-Bolt Flange (SAE "A" size) |
| Manufacturer | Fluidyne Fluid Power |
| Pumps Drive Shaft | 3/4" Straight Shaft with Key |
| Pumps Rotation | Right-Hand (Clockwise) |
| Pumps Max Pressure | 2500 psi |
| Pumps Rated Speed | 1200 RPM |
| Pumps Max Speed | 3200 RPM |
| Pumps Displacement | 26.6 cm³/r (1.62 in³/r) |
| Pumps Ports In | G1" BSPP Straight Thread |
| Pumps Ports Out | G1/2" BSPP Straight Thread |
These FluiDyne V20 Series hydraulic vane pumps differ primarily in flow rate, displacement, maximum pressure, maximum speed, shaft type, port orientation, and port threading. For a full selection of hydraulic pumps and related equipment, explore our product family. All models are 100% Vickers interchangeable and follow SAE ‘A’ 2-bolt mounting, making them direct replacements for Vickers replacement pumps. Selection should be based on your required flow, system pressure, port layout, and shaft compatibility. To compare additional single stage vane pumps, browse our full lineup.
?? Important: The specifications shown are for reference and comparison purposes. Always verify specifications with the official manufacturer documentation or contact our technical team at (800) 823-4937 before ordering to ensure compatibility with your application. We cannot accept returns due to specification mismatches.
| Model Number | Flow Rate | Max Pressure | Displacement | Mounting |
|---|---|---|---|---|
| WF820516 (Current) | 8.4 GPM | 2500 PSI | 26.6 cm³/r (1.62 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820519 | 6.2 GPM | 2500 PSI | 19.5 cm³/r (1.19 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820511 | 12.5 GPM | 2500 PSI | 39.5 cm³/r (2.41 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF8201811 | 13.5 GPM | 2500 PSI | 42.6 cm³/r (2.60 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF8201212 | 13.5 GPM | 2500 PSI | 42.6 cm³/r (2.60 in³/r) | 2-Bolt Flange (SAE “A” size) |
Difference: Flow rates at 1200 RPM range from 6.2 GPM (WF820519) up to 13.5 GPM (WF8201811 and WF8201212).
Selection Guide: Select WF820519 for low-flow circuits or pilot systems; choose WF8201811 or WF8201212 when higher flow is needed for larger actuators or faster cycle times.
Difference: Displacement increases from 1.19 in³/rev (WF820519) to 2.60 in³/rev (WF8201811 and WF8201212).
Selection Guide: Match displacement to your system’s required volume per revolution; higher displacement models deliver more fluid per revolution.
Difference: WF820516 and WF820519 support up to 2500 PSI, while WF820511, WF8201811, and WF8201212 are rated up to 2200 PSI.
Selection Guide: For applications requiring pressures above 2200 PSI, choose WF820516 or WF820519.
Difference: WF820519 supports up to 3400 RPM, while WF820516 allows 2800 RPM; WF820511, WF8201811, and WF8201212 are rated to 2400 RPM.
Selection Guide: Select WF820519 for high-speed applications. For standard speeds, any model will suffice.
Difference: WF820516, WF820519, and WF820511 use a 3/4″ straight shaft with key (2.66″ extension). WF8201811 and WF8201212 have a 3/4″ straight shaft with a shorter (1.75″) extension. WF8201212 uniquely offers a 7/8″ threaded shaft with Woodruff key.
Selection Guide: Match shaft type and extension to your coupling. Use WF8201212 if a threaded shaft is required.
Difference: WF820519 and WF8201811 have ports inline with the inlet (0°), WF820516 is at 90° counter-clockwise, and WF820511 and WF8201212 are opposite from inlet (180°).
Selection Guide: Choose port orientation that best fits your piping layout—inline for straight runs, 90° or 180° for compact or angled installations.
Difference: WF820516, WF820519, and WF8201811 use NPT inlets; WF820511 uses a 1-5/8″-12 straight thread inlet. Outlets vary between NPT and straight thread depending on model.
Selection Guide: Select a model that matches your required port threading to minimize adapters and installation complexity.
If you need: Lowest possible flow (6.2 GPM) at high speed and max pressure (2500 PSI, 3400 RPM)
Choose: WF820519
Because: Ideal for low-flow, high-speed circuits or pilot/auxiliary functions.
If you need: Intermediate flow (8.4 GPM) at up to 2500 PSI and 2800 RPM
Choose: WF820516
Because: Balances moderate flow with high pressure and standard shaft/port options.
If you need: Higher flow (12.5 GPM) with standard shaft and 180° port orientation
Choose: WF820511
Because: Suited for mid- to high-flow circuits needing straight thread inlet/outlet.
If you need: Maximum flow (13.5 GPM) with compact shaft extension
Choose: WF8201811
Because: Provides highest flow with inline ports and shorter shaft for space-constrained installations.
If you need: Maximum flow (13.5 GPM) and require a threaded shaft with Woodruff key
Choose: WF8201212
Because: Best for systems with threaded drive connections and 180° port orientation.
Compatibility: All models are direct Vickers replacements, fully interchangeable, and use the SAE J744 ‘A’ 2-bolt flange mounting. Most models feature G1″/G1/2″ BSPP ports for simplified plumbing.
For application-specific pump selection, cross-referencing, or troubleshooting, call Northern Hydraulics’ hydraulic specialists at (800) 823-4937, Mon-Fri, 7 AM – 5 PM MST. For broader system needs, see our full line of vane pumps.
Most hydraulic vane pumps ship within 1-2 business days. Made-to-order items typically require 5-7 business days.
For current availability on WF820516, call (800) 823-4937.
Order online for immediate processing. Phone orders welcome at (800) 823-4937.
Net 30 terms available for approved accounts.
Volume pricing available on orders of 4 or more units. For units with integrated control options, check our pumps with integral valves category.
Questions? Call our specialists: (800) 823-4937
The WF820516 from Fluidyne replaces Vickers WF820516 units in systems requiring a displacement of 26.6 cm³/r (1.62 in³/r), with a maximum operating pressure of 2500 PSI and rated speed of 1200 RPM. If you require an alternative with similar specs, see our V201P8P10D11R – FluiDyne V20 Pump. This direct replacement offers 100% interchangeability and adheres to SAE J744 mounting standards, ensuring seamless integration..
Commonly used in agricultural equipment, construction machinery, and utility vehicles. View additional real-world application examples for Vickers replacement pumps.
Important: Verify pump model WF820516 matches your existing Vickers unit before ordering. For technical assistance, contact (800) 823-4937. For more options in this series, view the V201P13P3A11R – FluiDyne V20 Pump.
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