| 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 | 3400 RPM |
| Pumps Displacement | 19.5 cm³/r (1.19 in³/r) |
| Pumps Ports In | G1" BSPP Straight Thread |
| Pumps Ports Out | G1/2" BSPP Straight Thread |
Most hydraulic pumps ship within 1-2 business days. Made-to-order items typically require 5-7 business days.
For current availability on WF820398 or other single stage vane pumps, 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 compatibility details, see our Vickers replacement pumps category.
Questions? Call our specialists: (800) 823-4937
These FluiDyne V20 Series hydraulic vane pumps are all direct Vickers replacements, sharing standardized SAE ‘A’ 2-bolt flange mounting and G1″/G1/2″ BSPP straight thread ports. The main differences between these models are flow rate, displacement, maximum pressure, maximum speed, rotation direction, shaft configuration, and mounting flange size. Selecting the right model depends on required system flow, pressure, rotation, and installation constraints.
?? 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 |
|---|---|---|---|---|
| WF820398 (Current) | 6.2 GPM | 2500 PSI | 19.5 cm³/r (1.19 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820391 | 12.5 GPM | 2500 PSI | 39.5 cm³/r (2.41 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820396 | 11.5 GPM | 2500 PSI | 36.3 cm³/r (2.22 in³/r) | 2-Bolt Flange (SAE “A” size) |
| WF820395 | 13.5 GPM | 2500 PSI | 42.6 cm³/r (2.60 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: Models range from 6.2 GPM (WF820398) up to 13.5 GPM (WF820395, WF8201811)
Selection Guide: Select higher flow models (11.5–13.5 GPM) for systems needing faster cylinder actuation or multiple actuators; choose 6.2 GPM (WF820398) for lower flow, higher precision applications.
Difference: Displacement increases with flow: 1.19 in³/r (WF820398), 2.22–2.60 in³/r (WF820396, WF820395, WF8201811)
Selection Guide: Pick larger displacement pumps for higher volume per revolution—important for low speed, high flow applications, such as those using V201P13P39C11R – FluiDyne V20 Pump.
Difference: WF820398 and WF820396 support up to 2500 PSI, while WF820391, WF820395, and WF8201811 are rated 2200 PSI in some descriptions but 2500 PSI in spec tables
Selection Guide: If your system requires sustained pressures at or near 2500 PSI, confirm the max pressure in both the detailed description and spec table before selecting.
Difference: WF820398 supports up to 3400 RPM, others are rated for 2400–2500 RPM
Selection Guide: For high-speed drive motors, WF820398 is preferable due to its higher max speed capability.
Difference: WF820398 and WF8201811 are right-hand (clockwise); WF820391, WF820396, and WF820395 are left-hand (counter-clockwise)
Selection Guide: Match pump rotation to your drive motor—select right-hand for CW motors, left-hand for CCW.
Difference: WF820398 uses an 11-tooth splined shaft (1.25″ extension); other models use a 3/4″ straight keyed shaft or special configurations
Selection Guide: Pick splined shafts for higher torque and keyed shafts for standard couplings; ensure shaft matches your drive hardware.
Difference: WF820398, WF820391, WF820396, and WF8201811 use SAE ‘A’ 2-bolt; WF820395 and WF820396 are described as ‘SAE B’ in details but ‘SAE A’ in specs—verify flange size before purchase
Selection Guide: Check your motor or bracket for proper flange compatibility; SAE ‘A’ is standard for these models.
If you need: Low flow, high precision, or high speed (up to 3400 RPM)
Choose: WF820398
Because: This model offers 6.2 GPM at 1.19 in³/r displacement and runs at higher speeds, ideal for compact circuits or when precise control is needed.
If you need: Highest possible flow (13.5 GPM) with right-hand rotation
Choose: WF8201811
Because: Provides maximum flow with right-hand (clockwise) rotation for demanding applications requiring rapid actuator movement.
If you need: Highest possible flow (13.5 GPM) with left-hand rotation
Choose: WF820395
Because: Best for systems with counter-clockwise drive motors and high flow requirements.
If you need: Mid-range flow (11.5 GPM) with left-hand rotation
Choose: WF820396
Because: Offers a balance between flow and system size; suited for moderate speed and flow needs.
If you need: High flow (12.5 GPM) and left-hand rotation, with longer shaft extension
Choose: WF820391
Because: Slightly higher displacement and shaft length for specialized coupling requirements.
Compatibility: All listed pumps are 100% interchangeable with Vickers V20 series, use SAE J744 mounting, and share G1″/G1/2″ BSPP ports, streamlining replacement and installation. For more options, explore our pumps with integral valves applications category.
For application-specific model selection or cross-reference support, call Northern Hydraulics’ team of hydraulic specialists at (800) 823-4937, Mon-Fri, 7 AM – 5 PM MST. (800) 823-4937, Mon-Fri, 7 AM – 5 PM MST. Volume pricing available for 4+ units; all pumps include a 12-month manufacturer warranty.
The Fluidyne WF820398 is a direct replacement for the Vickers WF820398 hydraulic vane pump, featuring 19.5 cm³/r (1.19 in³/r) displacement and a maximum pressure rating of 2500 PSI. This model ensures 100% interchangeability, providing seamless integration for applications originally using the Vickers WF820398..
Commonly used in mobile hydraulics, auxiliary power units, compact equipment—see more V201P5P18C11R – FluiDyne V20 Pump for similar applications.
Important: Verify pump model WF820398 matches your existing Vickers unit before ordering. For technical assistance, contact (800) 823-4937.
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