Matching Flow Diagrams to Replace an Air Directional Control Valve
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Choosing an Air Directional Control Valve
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Safety Relays with Diagnostic Capabilities
Control and diagnose issues with safety-critical circuits. These relays have a microprocessor that monitors safety components, such as emergency stops and light curtains, and sends a signal to stop the operation if a failure is detected and restart when the issue is resolved. They also help with diagnostic tasks because of their feedback circuit, which allows basic relays to communicate their status back to the safety relay. These relays have a duplicate set of input and output signals, so they’ll still stop the controlled device if one of the inputs fails.
IP20 rated, they have recessed terminals which prevent fingers and other objects from touching live circuits. These relays have been tested to multiple safety standards and can help achieve PL, SIL, or CAT system ratings. They also meet ISO and IEC standards for machine safety.
Mount them to 35 mm DIN rail (also known as DIN 3 Rail) for fast installation.
Auxiliary contact blocks (sold separately) allow you to control more components, such as signaling devices or basic relays.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | For Use With | Max. System Safety Rating | Features | Each | |
2 Circuits Controlled | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
2 Off (Normally Open) | |||||||||||
| 14 | 24V DC | 2 A @ 240 V AC 1.5 A @ 24 V DC | 250V AC | 4.9" | 0.69" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 0000000 |
4 Circuits Controlled | |||||||||||
4 Off (Normally Open) | |||||||||||
| 18 | 24V DC | 2 A @ 240 V AC 1.5 A @ 24 V DC | 250V AC | 4.9" | 0.89" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 000000 |
| Number of Terminals | Input Voltage  | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Features | Each | |
5 Safety Outputs | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 16 | 24V AC, 24V DC | 2.5 A @ 24 V DC 3 A @ 240 V AC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | __ | 0000000 | 0000000 |
4 Delayed Safety Outputs | |||||||||
| 16 | 24V DC | 3 A @ 240 V AC 3 A @ 24 V DC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | Time Delay | 0000000 | 000000 |
Two-Speed Two-Action Electrically Operated Air Directional Control Valves
Often used to extend and then retract a cylinder at different speeds, these valves create two actions and have two exhaust ports, which allows you to control the speed of each action by attaching a flow control valve to each exhaust port. Also known as 4-way and 5/2 valves, they actuate when voltage is applied to the electrical connection. They direct airflow from the inlet to your equipment and exhaust return airflow to create motion.
Valves with spring return actuation go back to their original position when voltage is removed. Valves with electric (solenoid) return actuation go back to their original position when voltage is moved from the first solenoid to the second solenoid.
NPTF (Dryseal) threads are compatible with NPT threads.
Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve. When selecting between valves with the same port size, choose the valve with the higher flow coefficient to ensure it provides enough airflow to operate your system.
For technical drawings and 3-D models, click on a part number.
Valves | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
O'all | Replacement Solenoids | |||||||||||||||
| No. of Flow Ports | Inlet Size | Outlet Size | Max. Flow Rate, scfm @ 100 psi | Flow Coefficient (Cv) | Pressure Range, psi | Vacuum Rating, in. of Hg | Lg. | Wd. | Ht. | Mount Type | Choose a Voltage | Each | Each | |||
Single Solenoid—Spring Return Actuation | ||||||||||||||||
| E | 5 | 3/4 NPTF | 3/4 NPTF | 287 | 9 | 15-145 | Not Rated | 10" | 4 1/4" | 6 1/2" | Screw In | 24V DC | 0000000 | 0000000 | 000000 | 00 |
| E | 5 | 3/4 NPTF | 3/4 NPTF | 287 | 9 | 15-145 | Not Rated | 10" | 4 1/4" | 6 1/2" | Screw In | 120V AC | 0000000 | 000000 | 0000000 | 000000 |
Double Solenoid—Electric (Solenoid) Return Actuation | ||||||||||||||||
| E | 5 | 3/4 NPTF | 3/4 NPTF | 287 | 9 | 15-145 | Not Rated | 10 1/2" | 4 1/4" | 6 1/2" | Screw In | 000000 | 000000 | 000000 | 00 | |