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ASCO™ Series RCS Redundant Control System
Series RCS
The ASCO Series RCS redundant control system is a pilot valve system with no single point of failure that can result in unwanted closure of the process valve.
It is suitable for use in SIL 3 applications and greatly reduces spurious trip rates. The ASCO Series RCS achieves a higher level of process safety and reliability by using a redundant, fault-tolerant architecture, high diagnostic coverage, and automated testing. It is available in a variety of constructions that provide valve diagnostics through automated, partial-stroke testing. The availability and reliability of The ASCO Series RCS provides the customer´s best choice for process valve diagnostics and actuation.
ASCO™ Series RCS Redundant Control System


Valve Actuation
Solenoid - Air Pilot
Body Material
Aluminum, Engineered Plastics, Stainless Steel
Air, Inert Gas
Port Type
Dual 3 - Way 2 X Normally Closed, Dual 3 - Way 2 X Normally Open
From 1.0 Cv to 2.0 Cv
110 AC, 120 AC, 230 AC, 12 DC, 24 DC, 48 DC, 120 DC
Max Differential / Max Operating Pressure
Vacuum to 150 PSIG
Operating Environment
Corrosive, Hazardous, Indoor, Outdoor
Operating Environment
Standards / Regulations
IEC 60529 (Ingress protection), ATEX, ISO, IP65


  • Keyed bypass allows on-line maintenance without process interruption
  • High safety availability
  • No nuisance trips
  • Optional stainless-steel construction


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