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Series 551 552 553 - ASCO 3/2, 5/2 Pilot Operated NAMUR Spool Valves G1/4-G1/2
The ASCO 551, 552, and 553 series 3-way pilot operated spool type solenoid valves are designed for use in a variety of applications where precise control of fluid flow is required. These valves are available in a range of configurations and have been certified by TÜV for functional safety according to IEC 61508, making them suitable for use in safety-critical systems up to SIL 4.
One of the key features of these valves is their environmental protection. Each exhaust port of the spool is connectable, which helps to prevent the ingress of liquids, dust, and other foreign matter. This makes the valves particularly well-suited for use in clean rooms, as well as in the pharmaceutical and food processing sectors.
In addition, the ASCO 551, 552, and 553 series valves can be externally piloted using an external air supply, which allows them to be converted to zero minimum operation by flipping a gasket. This makes them highly flexible and adaptable to a wide range of applications.
This valve has threaded port connections and a NAMUR interface. The same spool valve can be adapted for 3/2 NC or 5/2 functions for controlling double / single acting actuators.