ASCO ARCS 2oo3 redundant solenoid valve piloting system combines the advantages of both 1oo2 & 2oo2 systems to achieve a high
level of process safety and reliability.
2oo3 - Redundancy built to achieve a high level of process safety and availability Hardware fault tolerant = 1 SIL3.

Online Maintenance :
- Common by pass - allows online replacement of solenoid valve
- Individual isolation - 2oo2 & 2oo3 - Hot swapping that allow on-line replacement of solenoid valve while maintaining the system capability
to bring the process to safe mode in the event of an emergency.

Features & Benefits :
- Compact and fully integrated module
- Direct valve-to-valve design
- Status indication & feedback
- Online maintenance-individual isolation / common bypass
- Safe & proven technology