| 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 (1.75" extension) |
| Pumps Rotation | Left-Hand (Counter-Clockwise) |
| Pumps Max Pressure | 2500 psi |
| Pumps Rated Speed | 1200 RPM |
| Pumps Max Speed | 3000 RPM |
| Pumps Displacement | 29.7 cm³/r (1.81 in³/r) |
| Pumps Ports In | G1" BSPP Straight Thread |
| Pumps Ports Out | G1/2" BSPP Straight Thread |
These FluiDyne V20 Series vane pumps are all direct Vickers replacements, offering standardized SAE ‘A’ 2-bolt mounting and similar port sizes, but differ mainly in flow rate, displacement, shaft type, rotation, port orientation, and special cover features. Selecting the right model depends on your flow/pressure demands, shaft compatibility, rotation direction, and any need for integral flow control. For a full overview of available hydraulic pumps, explore our main product selection.
?? 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 |
|---|---|---|---|---|
| WF820487 (Current) | 9.4 GPM | 2500 PSI | 29.7 cm³/r (1.81 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820488 | 9.4 GPM | 2500 PSI | 29.7 cm³/r (1.81 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820481 | 9.4 GPM | 2500 PSI | 29.7 cm³/r (1.81 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820489 | 11.5 GPM | 2500 PSI | 36.3 cm³/r (2.22 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) |
Difference: WF820487, WF820488, and WF820481 deliver 9–9.4 GPM at 1.81 in³/rev; WF820489 increases to 11.5 GPM at 2.22 in³/rev; WF8201811 delivers the highest at 13.5 GPM/2.60 in³/rev.
Selection Guide: For higher system demand, choose WF8201811 (13.5 GPM); for moderate demand, select WF820489 (11.5 GPM); for standard flows, use WF820487, WF820488, or WF820481.
Difference: WF820487 and WF820481 use a 3/4″ straight keyed shaft; WF820488 and WF820489 have an 11-tooth splined shaft; WF8201811 uses a special shaft (Code 39).
Selection Guide: Use splined shaft models (WF820488, WF820489) for higher torque or spline couplings; straight keyed shaft models (WF820487, WF820481) suit standard keyed couplings.
Difference: WF820487, WF820488, WF820489 are left-hand (counter-clockwise); WF820481, WF8201811 are right-hand (clockwise).
Selection Guide: Match the rotation to your drive motor—select left-hand for counter-clockwise drives, right-hand for clockwise.
Difference: WF820487, WF820488, WF8201811 have inline ports (0°); WF820481 has 90° clockwise ports; WF820489 has 90° counter-clockwise ports.
Selection Guide: Choose inline for straightforward plumbing; 90° ports suit installations with limited space or specific hose routing needs.
Difference: WF820489 features a flow control cover (includes relief valve and flow control); others have standard covers. For more options with integrated control, explore our pumps with integral valves.
Selection Guide: Use WF820489 when you need integrated flow and pressure control to simplify your circuit.
Difference: Most models rated 2500 PSI and 2800 RPM max; WF8201811 maxes at 2200 PSI and 2400 RPM; WF820489 (with flow control) is limited to 2500 RPM.
Selection Guide: For highest pressure and speed demands, avoid WF8201811 and WF820489—choose other models for full 2500 PSI/2800 RPM operation.
If you need: Standard 9 GPM pump with left-hand rotation and keyed shaft
Choose: WF820487
Because: Matches most common Vickers V20 applications with direct interchangeability.
If you need: Standard 9 GPM, left-hand rotation, high-torque or splined coupling
Choose: WF820488
Because: Offers same performance as WF820487 but with a splined shaft for high-torque or spline couplings.
If you need: Standard 9 GPM, right-hand rotation, 90° port orientation
Choose: WF820481
Because: Best for systems needing clockwise rotation and side port configuration. Alternatively, for similar applications with slightly lower displacement, see our V201P8P10D11R model.
If you need: Higher flow (11.5 GPM), left-hand rotation, integrated flow control
Choose: WF820489
Because: Ideal for circuits that require controlled flow and built-in pressure relief.
If you need: Maximum flow (13.5 GPM), right-hand rotation
Choose: WF8201811
Because: Provides the highest output for demanding applications, with right-hand rotation. For related high-performance models, see the V201P13P3A11R pump.
Compatibility: All models are 100% interchangeable with Vickers V20 series, use SAE J744 ‘A’ 2-bolt mounting, G1″/G1/2″ BSPP ports, and fit standard hydraulic system footprints for easy integration.
For model selection assistance, troubleshooting, or cross-referencing, Northern Hydraulics’ team of hydraulic specialists is available Mon-Fri, 7 AM – 5 PM MST. See our full line of single stage vane pumps for additional options, or call us at (800) 823-4937.
For users needing a direct Vickers WF820487 replacement, this Fluidyne V20 series pump is fully interchangeable and delivers a displacement of 29.7 cm³/r (1.81 in³/r) at pressures up to 2500 PSI. It is designed for reliable performance in hydraulic circuits operating at rated speeds up to 1200 RPM, maintaining flow and pressure standards set by the original Vickers specification..
Commonly used in lifting equipment, conveyor systems, processing machinery, and other industrial hydraulic systems. See additional Vickers replacement pumps for a broader list of applications.
Important: Verify pump model WF820487 matches your existing Vickers unit before ordering. For technical assistance, contact (800) 823-4937.
Most hydraulic pumps ship within 1-2 business days. Made-to-order items typically require 5-7 business days.
For current availability on WF820487, call (800) 823-4937.
Order online for immediate processing, or browse our complete hydraulic pumps range. 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 more detailed technical resources and to review our full range of vane pumps, contact us. Questions? Call our specialists: (800) 823-4937
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