Pilot Valves- ASCO 3-way solenoids, 8314, 8316, and 8320 are the most widely used solenoid pilot valves in the world. For your spring return actuator applications, these valves are proven in use and have undergone 3rd party evaluation by Exida per IEC 61508 Parts 1 & 2. All 3 series are certified SIL 3 capable. Individual pilot valves are most commonly used in 1-out-of-1 voting architectures but can be easily piped into a 2-out-of-2 configuration. ASCO pilot valves are used as the primary device for process valve actuation as well as the shutdown valve when used with digital valve controllers for on-off and control valve applications. SIL 3 Certified

8314 Certificate
8316 Certificate
8320 Certificate
8327 Certificate
8551/2/3 Certificate
Harsh Environment Certificate
Manual Reset Valves Certificate

Pilot Valve Operating Manual

Manual Reset Valves Operating Manual

Redundant Control Systems - The ASCO RCS is a redundant pilot valve system that acts as a single 3-way valve. The added features of this system above an individual valve include the ability to perform automatic online testing of the redundant solenoid valves, automatic partial stroke testing of the process valve, and online maintenance capabilities. This product is built for high reliability applications and functional safety. The redundant solenoids can operate in 1-out-of-1 Hot Standby mode or 2-out-of-2 diagnostic mode. Both modes of operation are certified per IEC 61508 Parts 1 and 2 and are SIL 3 capable. SIL 3 Certified, ATEX Approved

RCS Safety Manual