What is the definition of "meter-out circuit"?
A flow control configuration in which the valve is located downstream of the actuator.

Learn more about meter-out circuit in the class Basic Hydraulic Circuit Design 310 below.


Hydraulics and Pneumatics Training


Class Information
Hydraulics and Pneumatics Training Tooling U-SME classes are offered at the beginner, intermediate, and advanced levels. The typical class consists of 12 to 25 lessons and will take approximately one hour to complete.
Class Name:Basic Hydraulic Circuit Design 310
Description:This class provides an overview of basic hydraulic circuits and how they are designed to perform basic tasks.
Prerequisites: 570200  570220  570230 
Difficulty:Advanced
Number of Lessons:18
Language:English, Spanish
 
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Class Outline
  • Objectives
  • Basic Hydraulic Circuits
  • Pump Circuits: High-Low
  • Valve Circuits: Pump Unloading
  • Valve Circuits: Sequencing Cylinders
  • Valve Circuits: Reciprocating Cylinders
  • Valve Circuits: Locking an Actuator
  • Valve Circuits: Meter-In and Meter-Out
  • Valve Circuits: Other Speed Control Circuits
  • Filter Circuits
  • Actuator Circuits: Single-Acting Cylinder
  • Actuator Circuits: Double-Acting Cylinder
  • Actuator Circuits: Synchronizing Cylinders
  • Pressure Circuits: Intensifiers
  • Pressure Circuits: Accumulators as Backup Power
  • Pressure Circuits: Accumulators for Leakage and Shock
  • Building a Basic Circuit
  • Summary
  
Class Objectives
  • Describe essential components of a basic hydraulic circuit.
  • Describe a basic High-Low circuit.
  • Describe the basic unloading circuit.
  • Describe the basic cylinder sequencing circuit.
  • Describe the basic reciprocating cylinder circuit.
  • Explain how to lock an actuator using pilot check valves.
  • Distinguish between a meter-in and meter-out circuit.
  • Distinguish between a bleed-off and a variable feed circuit.
  • Identify different types of filter circuits.
  • Describe a basic single-acting cylinder circuit.
  • Describe a basic double-acting cylinder circuit.
  • Describe a basic synchronizing circuit.
  • Describe a basic intensifier circuit.
  • Describe the uses of an accumulator as backup power.
  • Describe accumulator circuits for leakage and shock.
  • Describe the considerations for building a basic circuit.

Class Vocabulary

Vocabulary TermDefinition
accumulator A hydraulic component used to store hydraulic fluid and pressure. An acccumulator can be used as a backup power source, a leakage compensator, and a shock absorber.
bleed-off circuit A flow control configuration in which a valve directs flow back to the tank when actuated. The valve of the bleed-off circuit can be located anywhere along the main line.
booster A hydraulic component that converts low pressure from a large area of the booster into high pressure in a small area of the booster. Also called an intensifier, a booster is usually two different-sized cylinders connected by a common piston.
cam-operated Actuated by the distinct physical geometry of a cam, or a circular shape that converts rotational movement into linear movement. As the cam rotates, its shape actuates the valving mechanism of the valve.
double-acting cylinder A fluid power actuator that directs energy in two directions.
extension The movement of a single-acting cylinder characterized by fluid pushing on the piston and moving the rod outside of the cylinder housing. In a double-acting cylinder, extension occurs on each stroke and alternates between ends of the cylinder.
filter A screen used for limiting contamination by trapping very fine and fine particulate matter.
flow control valve A fluid component that controls the rate of fluid flow. Flow control valves make it possible to control other system variables like the speed of an actuator.
high-low circuit A hydraulic circuit powered at different times by a high-pressure, low-flow pump and a low-pressure, high-flow pump. This two-pump circuit configuration eliminates the need for a relatively expensive high-pressure, high-flow pump and also saves energy.
hydraulic intensifier A hydraulic component that converts low pressure from a large area of the intensifier into high pressure in a small area of the intensifier. Also called boosters, intensifiers are usually two different-sized cylinders connected by a common piston.
in parallel A circuit configuration in which fluid flows into the cap end of two or more side-by-side cylinders from the same source at the same time. Although the cylinders will move, it is impossible to synchronize them.
in series A circuit configuration in which cylinders are connected end-to-end. In this configuration, all cylinders are synchronized regardless of the load on any individual cylinder.
independent filter circuit A secondary fluid circuit intended solely for filtering the fluid for another circuit.
kidney loop filter A filter located on an independent circuit intended only for filtration. The kidney loop filter shares a common reservoir with the main circuit.
logic The unique configuration of a hydraulic circuit that involves placing components to perform work.
lunging A situation in which the actuator and the load are moving in the same direction. Lunging, or overrunning, often causes the actuator to jump.
meter-in circuit A flow control configuration in which the valve is located downstream of the pump and upstream of the actuator.
meter-out circuit A flow control configuration in which the valve is located downstream of the actuator.
pilot check valve A check valve that is direct-operated under normal circumstances and actuated by a pilot signal under circumstances that call for a valve override.
position The number of physical settings on a directional control valve. A three-position valve can be placed in three different physical settings with a control such as a lever.
pressure drop The difference between two pressure levels in a hydraulic circuit.
pressure line bleed-off filter A filter located on a secondary line connected to the main line at the outlet of the pump.
pressure line filter A filter located at the outlet of the pump.
reciprocation The back-and-forth extension and retraction of a hydraulic cylinder.
retraction The movement of a single-acting cylinder characterized by fluid exiting the cylinder and the rod moving into the cylinder housing. In a double-acting cylinder, retraction occurs on each stroke and alternates between ends of the cylinder.
return line filter A filter located on the return line just before the line enters the reservoir.
rod end The side of the piston that is attached to the rod.
sequence valve A pressure control valve that allows hydraulic fluid to flow into a secondary system after a critical pressure is reached.
single-acting cylinder A fluid power actuator that directs energy in one direction.
spring-centered Situated by a mechanism that keeps a directional control valve in the center locked position unless the valve is actuated into the first or third position.
suction line filter A filter located between the reservoir and the pump.
unloading valve A pressure relief valve located near a pump in order to depressurize the pump when a critical pressure downstream has been reached.
variable feed circuit A flow control configuration in which a cam-operated two-way valve and a meter-out flow control valve are located in parallel. This results in varying speeds at different parts of the circuit.
water hammer Shock in a hydraulic system that can cause damage to components if not addressed.
way A characteristic of a valve that indicates how a fluid can flow through it.