Manufacturer: ASCO JAPAN  Co.LTD.
Product Name: Functional Safety Products For The Process Industry

At ASCO, we provide a wide range of products, such as three-way pilot solenoid valves, manual reset solenoid valves, and pilot valve redundancy systems. These solutions are perfect for safety instrumented systems and essential circuit final elements. Additionally, we offer products that comply with ATEX standards and hold SIL certification. When it comes to functional safety, you can always count on ASCO for reliable performance.

3-way solenoid valve

This solenoid valve holds certification from the third-party certification body exida for IEC61508 Part 1&2 SIL3, making it ideal for use as a pilot valve for spring-return actuators. Typically, it operates in 1oo1 and 1oo2 configurations, but can be easily adapted for 2oo2 setups as well. Beyond that, it serves as a reliable solenoid valve for process control, and when paired with a digital valve controller, it functions as an effective emergency shutoff valve for both on-off and control valves.as a solenoid valve for process control, and as an emergency shutoff valve when combined with a digital valve controller for on-off valves and control valves.

Manual reset type & coil redundant pilot valve

Manual reset type pilot valves play a key role in the process industry, offering SIL3 certification for use in demanding plant environments that require high reliability. Lever type manual reset valves deliver corrosion resistance and durability, making them perfect for circuits where manual control handles the final process. Coil redundant pilot valves are ideal for applications requiring frequent operation.Coil redundant pilot valves can be used for high frequency operation.

Pilot valve redundancy system

This pilot valve redundancy system functions as a single 3-way valve. It is possible to perform online testing of the solenoid valves in the redundant circuit, partial stroke testing of the process valves, and online maintenance, making it ideal for applications that require high reliability or functional safety. Either 1oo1HS mode or 2oo2D mode can be selected. Both modes are SIL3 certified according to IEC61508 Part 1&2.