Roles of directional control valves
For your application, SMC's directional control valves are essential, offering perfect solutions for controlling single or double-acting actuators, operating additional valves, or stopping air flow in the pipeline.
Explore our catalogue to find a wide range of directional control valves, designed to keep your equipment and machinery running smoothly. At SMC, we offer maximum flexibility by customizing valves to meet your specific needs.
Types of directional control valves offered by SMC
Devices like solenoid valves control the flow of fluids (such as oil, water, steam, or air) within hydraulic and pneumatic systems. They can be classified based on their actuation method:
Function of pilot-operated and direct-operated solenoid valves
The valve position is changed by an electrical signal, with options including direct-operated or pilot-operated solenoid valves, available in configurations with 3 ports or 4/5 ports.
Air-operated valves adjust the valve position using pilot air port.
Mechanical and hand valves
Mechanical and hand valves adjust the valve position through an operator or an object that comes into contact with the valves.
Additionally, valves can be categorised based on their number of actuations:
Single valves perform a single actuation and return to a specific position when the actuation stops.
Double valves feature two actuations and maintain their last position until a signal directs the actuator on the opposite side to move.
3-port solenoid valves undergo two actuations and return to the centre position when the actuations stop./p>
Securing machinery with SMC valves
Valves are essential for protecting machines and industrial processes. At SMC, we offer solutions that enhance machine security:
SMC safety pressure release valves are certified to comply with Machinery Directive 2006/42/EC for use in safety systems, adhering to ISO 13849-1 specifications.
Fieldbus systems ensure secure encoded communication between the PLC and valve block, exemplified by the PROFIsafe protocol. One such system is the SMC EX260 series, known for its compactness and easy installation.
For designing safety applications, PneuSAFE SMC software enables selection and validation (including TÜV-verified circuits) of the most appropriate SMC solutions tailored to your needs.
Option of fieldbus system
SMC offers fieldbus system options that facilitate encoded communication between PLCs and valve manifolds. Key communication protocols include:
- PROFIsafe,
- Ethernet POWERLINK,
- PROFINET,
- EtherNet/IPTM,
- EtherCAT®,
- PROFIBUS DP,
- DeviceNetTM,
- CC-Link,
- CANopen,
- Modbus/TCP
- AS-Interface
SMC goes further by helping you integrate your machines into the Industrial Internet of Things (IIoT).
At SMC, our industrial communication strategy consists of two main elements: delivering tailored solutions to our customers and offering innovative products. This includes our exclusive Wireless Fieldbus System and a wide array of IO-Link solutions. These offerings ensure that your factory benefits from the advantages of advanced digitalization and automation.
Uses of directional control valves
Examples of applications for directional control valves include:
- Automotive industry (paint applications, tire manufacturing, among others)
- Packaging
- Maintenance operations
- Metal cutting
- Material transport
- Product sorting
- Battery manufacturing
Choosing directional control valves: Factors to Consider
When selecting directional control valves, it is important to consider various factors related to process conditions and the application, including:
- Valve operation and flow capacity
- Valve reaction time and frequency of operation
- System pressure and flow requirements
- Required valve protection rating
- Voltage supply
- Environmental protection rating
- Durability
Additionally, it is essential to consider the customer's needs, which may include:
- Desired electrical connection type: single, multi-pole, or fieldbus
- Safety considerations
- Plans for future installation expansion
- Necessary valve accessories
It is also important to account for environmental factors to enhance the longevity of pneumatic components. Excessive humidity, oil, and particles can cause disruptions in industrial operations.
The cornerstone of preventive maintenance for pneumatic systems involves optimizing compressed air quality based on expert recommendations.
Use our valve manifold configurator and other engineering tools to effortlessly design your customized valve manifold.
For any inquiries or uncertainties about our products, consult our experts who are available to assist you in Norwegian or English.
