Home » Hydraulics Shop » Hydraulic Pumps » Hydraulic Vane Pumps » Single Stage Vane Pumps » Fluidyne V20 WF820977 Vane Pump | Replacement for Vickers/Eaton V201P9S1D11R 3.0 GPM | 2500 PSI | SAE ‘A’ 2-Bolt | 3/4″ Keyed Shaft

Fluidyne V20 WF820977 Vane Pump | Replacement for Vickers/Eaton V201P9S1D11R 3.0 GPM | 2500 PSI | SAE 'A' 2-Bolt | 3/4" Keyed Shaft

Fluidyne V20 WF820977 Vane Pump | Replacement for Vickers/Eaton V201P9S1D11R 3.0 GPM | 2500 PSI | SAE 'A' 2-Bolt | 3/4" Keyed Shaft - Image 2

Specifications

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	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

Product Selection Guide

The FluiDyne V20 Series models compared here differ primarily in flow rate, displacement, allowable pressure, and shaft/port configurations. All are direct Vickers replacement pumps, 100% interchangeable, and follow SAE J744 mounting. Selection hinges on your system’s required flow, space, and specific connection needs.

?? 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
WF820977 (Current)	9.4 GPM	2500 PSI	29.7 cm³/r (1.81 in³/r)	2-Bolt Flange (SAE “A” size)
WF820972	8.4 GPM	2500 PSI	26.6 cm³/r (1.62 in³/r)	2-Bolt Flange (SAE “A” size)
WF820971	12.5 GPM	2500 PSI	39.5 cm³/r (2.41 in³/r)	2-Bolt Flange (SAE “A” size)
WF820975	6.2 GPM	2500 PSI	19.5 cm³/r (1.19 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)

Key Differences

Flow Rate

Difference: Flow rates range from 6.2 GPM (WF820975) to 13.5 GPM (WF8201811) at 1200 RPM.

Selection Guide: Select a higher GPM model (e.g., WF8201811) for faster actuator speed or high-demand circuits; choose lower GPM (WF820975) for precise, low-flow applications or where flow control is built-in.

Displacement

Difference: Displacement spans from 19.5 cm³/r (1.19 in³/r) in WF820975 up to 42.6 cm³/r (2.60 in³/r) in WF8201811.

Selection Guide: Higher displacement pumps (e.g., WF8201811, WF820971) deliver more fluid per revolution—ideal for large-volume systems. Lower displacement (WF820975) suits smaller cylinders or finer control.

Max Pressure

Difference: WF820971 and WF8201811 have lower max pressure ratings (2200 PSI) compared to others at 2500 PSI.

Selection Guide: For systems operating near 2500 PSI, avoid WF820971 and WF8201811; choose WF820977 or WF820972.

Shaft Configuration

Difference: WF820975 uses an 11-tooth splined shaft; others use a 3/4″ straight shaft with key, but extension length varies.

Selection Guide: Splined shafts (WF820975) are best for high-torque/high-cycle applications; keyed shafts are standard for general use.

Port Position

Difference: WF820977 and WF820975 have ports at 90° clockwise from inlet; others are inline (0°).

Selection Guide: 90° ports (WF820977, WF820975) help in tight spaces or specific plumbing layouts; inline ports (WF820972, WF820971, WF8201811) are best for straight-through connections.

Mounting & Ports

Difference: All use 2-bolt (SAE ‘A’) flanges and G1″/G1/2″ BSPP straight thread ports, making them a direct fit with our vane pumps family.

Selection Guide: Mounting and port compatibility is consistent—easy swap with Vickers models or other single stage vane pumps.

Special Functionality

Difference: WF820975 is a flow-control model with built-in 6 GPM flow control and 2000 PSI relief. See other vane pumps with integral valves for similar specifications.

Selection Guide: Choose WF820975 for integrated pressure/flow control in circuits needing protection or fine-tuned operation, or compare with other pumps with integral valves for advanced hydraulic circuit needs.

Quick Selection Guide

If you need: A direct Vickers replacement for 9 GPM at 2500 PSI with standard keyed shaft and 90° port orientation

Choose: WF820977

Because: It offers robust 9.4 GPM flow at full 2500 PSI with standard mounting, direct Vickers interchangeability, and same-day shipping.

If you need: Slightly lower flow (8.4 GPM) with inline ports and standard keyed shaft

Choose: WF820972

Because: Ideal for systems with straight plumbing runs and slightly reduced flow needs.

If you need: Higher flow (12.5 GPM) but can operate at lower max pressure (2200 PSI)

Choose: WF820971

Because: Best for high-volume, lower-pressure applications where speed is prioritized over maximum pressure.

If you need: Integrated flow and pressure control with splined shaft for high torque

Choose: WF820975

Because: Suited for circuits needing built-in flow/relief and higher shaft durability.

If you need: Maximum flow (13.5 GPM) at moderate pressure (2200 PSI) and inline ports

Choose: WF8201811

Because: Best for large actuators or high-speed applications where pressure demands remain below 2200 PSI.

Compatibility: All FluiDyne V20 models shown are 100% interchangeable with equivalent Vickers pumps, use SAE ‘A’ mounting, and share G1″/G1/2″ BSPP straight thread ports for easy swap-in. Volume pricing is available from 4 units, and every pump includes a 12-month manufacturer warranty. Same-day shipping on in-stock models.

For expert hydraulic pump selection, cross-referencing, or troubleshooting, contact Northern Hydraulics at (800) 823-4937, Mon-Fri, 7 AM – 5 PM MST.

Compatibility & Applications

Direct Replacement Information

This Fluidyne unit serves as a direct replacement for Vickers WF820977 in systems requiring 29.7 cm³/r (1.81 in³/r) displacement and up to 2500 PSI operating pressure. It is 100% interchangeable, following SAE J744 mounting standards for seamless installation..

Mounting Pattern: SAE ‘A’ 2-bolt
Inlet Port: G1″ BSPP
Outlet Port: G1/2″ BSPP

Common Applications

Commonly used in marine applications, stationary power units, test stands, and comparable to other FluiDyne V20 models for similar use cases.

marine applications
stationary power units
test stands

Important: Verify pump model WF820977 matches your existing Vickers unit before ordering. For technical assistance, contact (800) 823-4937.

Purchasing Information

Availability & Delivery

Most Hydraulic pumps ship within 1-2 business days. Made-to-order items typically require 5-7 business days.

For current availability on WF820977, call (800) 823-4937.

Warranty & Protection

12-month warranty covers manufacturing defects
30-day return window for unopened units
Free technical verification before ordering
Each pump pressure tested before shipment, leveraging Northern Hydraulics’ industry-leading hydraulic pumps quality standards.

Ordering Options

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.

Support & Documentation

Installation guide included with every shipment
Technical drawings and specifications available for this and other vane pumps
Cross-reference guides for common brands
Phone support: Monday-Friday, 7 AM – 5 PM MST

Questions? Call our specialists: (800) 823-4937

SKU: WF820977

Fluidyne V20 WF820977 Vane Pump | Replacement for Vickers/Eaton V201P9S1D11R 3.0 GPM | 2500 PSI | SAE ‘A’ 2-Bolt | 3/4″ Keyed Shaft

Name: Fluidyne V20 WF820977 Vane Pump | Replacement for Vickers/Eaton V201P9S1D11R 3.0 GPM | 2500 PSI | SAE 'A' 2-Bolt | 3/4" Keyed Shaft
Brand: Northern Hydraulics Inc.
SKU: WF820977
Price: 299.2 USD
Availability: InStock