Animated Hydraulic Circuits Flash Drive

30 color-coded animated .mp4 and .wmv files of each circuit operation using ANSI-recognized color designations.

Visually seeing a circuit perform along with a description of operation can increase the comprehension of a particular component’s operation and its function within the circuit.

These animated presentations can be used by:

  • Instructors to assist in Hydraulic Specialist (HS) Certification review training
  • Individuals to enhance their preparation to take the HS Certification test.
  • Anyone interested learning component function and circuit operation


The circuit schematics found in the IFPS HS Certification Study Manual are designed to illustrate an operational or theoretical hydraulic system showing the interaction of components to achieve a desired output.

The HS Certification Study Manual is not designed as a teaching document but rather a means of reviewing or reinforcing concepts to a certification test candidate and cannot possibly cover every application of a component within a hydraulic circuit.  Subject matter experts developed the circuits in the Study Manual that are intended to represent a specific application or the use of a component within a circuit to illustrate the typical usage.  These have been placed in the Study Manual to facilitate a review of their operation and function.


Color-coded animated .mp4 and .wmv files of each circuit operation using ANSI recognized color designations. Each circuit shows the sequence of operations within the hydraulic circuit as well as the flow paths during operation.

Key bullet points for each circuit from the HS Certification Study Manual to assist in the understanding of the components’ function and interaction within the circuit.


Fig. 1-1 Tandem Center Circuit Equipped with a Relief Valve
Fig. 1-3 High-Low Circuit
Fig. 1-4 Pressure Reducing Valve
Fig. 1-5 Synchronous Circuit with a Displacement-type Flow Divider
Fig. 1-6 Synchronous Circuit with Cylinders Connected in Series
Fig. 1-13 Unloading Relief Valve
Fig. 1-14 An Unloading Valve in a High-Low Pump Circuit
Fig. 1-16 Sequence Valve Circuit
Fig. 1-17 Counterbalance Valve in a Press Circuit
Fig. 1-18 Over-Center Valve in a Press Circuit
Fig. 1-19 Brake Valve Circuit
Fig. 1-24 Brake Valve Circuit with Check Valve
Fig. 1-25 Pilot Operated Check Valve Application
Fig. 1-26 Float Center Spool used with Pilot Operated Check Valves
Fig. 1-28 Load Sense Schematic
Fig. 1-42 Full-Time Regenerative Circuit
Fig. 1-43 Part-Time Regenerative Circuit with Bleed-Off
Fig. 1-44 Part-Time Regenerative Circuit with Counterbalance Valve
Fig. 1-45 Regenerative Circuit with Regen Position in the DCV
Fig. 1-46 Accumulator Circuit Operation
Fig. 1-58 Open Center Steering
Fig. 1-59 Closed Center Steering
Fig. 1-60 Load Reaction Center Steering
Fig. 2-4 Circuit for the Two Cylinders Application in Fig. 2-2
Fig. 3-33 Accumulator Circuit
Fig. 3-34 Intensifier System with an Air-Oil Return Tank
Fig. 4-5 Circuit Schematic with Check Valves
Fig. 4-6 Pilot Operated Directional Control Valve Circuit
Fig. 4-7 Cylinder – Motor Circuit 1
Fig. 4-8 Cylinder – Motor Circuit