Directional Valves

Valves for flow direction control

Use these blocks to model valves that control the flow direction in a network.

Simscape Blocks

2-Way Directional Valve	Hydraulic continuous 2-way directional valve
3-Way Directional Valve	Three-port two-position directional control valve
4-Way Directional Valve	Four-port three-position directional control valve
4-Way Directional Valve A	Configuration A of hydraulic continuous 4-way directional valve
4-Way Directional Valve B	Configuration B of hydraulic continuous 4-way directional valve
4-Way Directional Valve C	Configuration C of hydraulic continuous 4-way directional valve
4-Way Directional Valve D	Configuration D of hydraulic continuous 4-way directional valve
4-Way Directional Valve E	Configuration E of hydraulic continuous 4-way directional valve
4-Way Directional Valve F	Configuration F of hydraulic continuous 4-way directional valve
4-Way Directional Valve G	Configuration G of hydraulic continuous 4-way directional valve
4-Way Directional Valve H	Configuration H of hydraulic continuous 4-way directional valve
4-Way Directional Valve K	Configuration K of hydraulic continuous 4-way directional valve
4-Way Ideal Valve	Hydraulic 4-way critically-centered valve
6-Way Directional Valve A	Configuration A of hydraulic continuous 6-way directional valve
Cartridge Valve Insert	Hydraulic cartridge valve insert
Cartridge Valve Insert with Conical Seat	Hydraulic cartridge valve insert with conical seat
Check Valve	Hydraulic valve that allows flow in one direction only
Hydraulically Operated Remote Control Valve	Normally closed or normally open hydraulically operated remote control valve
Pilot-Operated Check Valve	Hydraulic check valve that allows flow in one direction, but can be disabled by pilot pressure
Shuttle Valve	Hydraulic valve that allows flow in one direction only

Topics

Modeling Valves in Simscape Fluids
Selecting and parameterizing valves in Simscape Fluids.
Building a Custom Valve
Model a custom valve with orifice blocks.
Modeling Hydraulic Directional Valves
Directional valves, valve configurations, and custom blocks created from Simscape™ and Simscape Fluids™ blocks.

Featured Examples

Injection Molding Actuation System

An injection molding actuation system. The model contains a set of cartridge valves that control pumps, motors, and cylinders to execute the steps of an injection molding process.

Open Model

Front-Loader Actuation System

A simplified version of an actuation system consisting of the lift and tilt cylinders. Each cylinder is controlled by an open center, 6-way, 3-position directional valve. The valves are connected in series through their unloading branch such that the system pump is unloaded when both command levers are in neutral position. If either tilt or lift command is applied, the unloading path is closed.

Open Model

Pilot-Operated Check Valve Test Rig

A test circuit built to check the characteristics of a pilot-operated check valve. The valve is loaded with three ideal pressure sources, two of which create pressure differential across the main flow line, while the third applies pressure to the pilot inlet X. The pilot pressure allows flow through the valve even if the main pressure differential is negative.

Open Model

Anti-Lock Braking System (ABS)

A simple way of modeling an ABS braking system. The model shows the velocity profile responses achieved for the vehicle CG and the wheels.

Open Model

Hydrostatic Transmission

A transmission built of a variable-displacement pump, and a fixed-displacement hydraulic motor. Pipelines between the source and motor are connected by two replenishing valves (check valves) and a charge pump on the pump side and two pressure-relief valves on the motor side. The motor drives a mechanical load consisting of inertia, viscous friction, and time-varying torque. The system is tested with varying pump flow rate and motor torque load.

Open Model