Actuators
Fundamentals
Symbols
Pumps
Valves
100
This type of actuator converts a hydraulic energy into a rotary mechanical energy
What is a motor
100
pressure on a confined fluid is transmitted equally to the surface of a container is known as this physics law
What is Pascals Law
100
This Hydraulic symbol represents
What is a fixed displacement pump
100
Typically considered the simplest and cheapest style of pump
What is an external gear pump
100
This type of valve protects the system from too much pressure in the system
What is a pressure relief valve
200
A side of a double acting cylinder which is able to move the greatest force is know as this
What is the Barrel/Head end
200
As oil flows through an orifice, the pressure beyond the orifice will do this
What is decrease
200
An actuator that is activated by this symbol is said to be
What is foot pedal actuated
200
A relief valve in an open circuit is mandatory to be used with this style of pump
What is a fixed displacement pump
200
The pressure at which a valve begins to open but is not fully open is referred to as this
What is cracking pressure
300
In this type of circuit, the actuator that is closest to the pump will get priority
What is a series circuit
300
The phenomenon that occurs when gas bubbles form in the suction side of the pump is known as this
What is cavitation
300
The symbol for a variable displacement pump looks similar to that of a fixed displacement pump, but has this added feature
What is a diagonal line
300
This style of pump will decrease flow rate as the system pressure rises
What is a non-positive displacement pump
300
This type of valve can be manually, electronically and pilot actuated to divert flow from on area to another
What is a directional control valve
400
This type of cylinder is single acting and has no piston inside of it
What is a ram
400
This type of hydraulic circuit will have oil flowing from pump to tank whenever the machine is running
What is an open circuit
400
This hydraulic symbol has the base shape of a rectangle
What is a cylinder
400
This pump features a crescent shaped spacer in the middle of it
What is an internal gear pump
400
A type of valve that satisfies the needs of braking and steering before allowing oil to other components is know as this
What is a priority valve
500
The process of getting all of the cylinders in a series circuit extended completely so that they are all moving at the same height is known as this
What is phasing
500
The engineering science of liquid momentum with high flow and low pressure is known as this
What is hydro dynamics
500
A line on a hydraulic schematic that is made up of a string of alternating dashes and dots represents this
What is an enclosure
500
Oil flow through the housing of a pump that is used for cooling and lubrication rather than for power transfer is referred to as this
What is case drain
500
This type of valve is superior over a direct acting because it has lower pressure override
What is a pilot operated relief valve