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Fisher™ Digital Isolation™ Triple Offset Valve Solution
Fisher Digital Isolation Triple Offset Valve Solution
The Fisher Digital Isolation triple offset valve (TOV) solution was developed to serve the needs of customers' critical safety instrumented system (SIS) applications.
The valve is assembled with field-proven Fisher G or CB Series actuation, Fisher FIELDVUE™ DVC6200 SIS digital valve controller, and Emerson accessories.
Fisher™ Digital Isolation™ Triple Offset Valve Solution


Valve Type
Triple Offset Valve
Scotch Yoke, Spring-return, Double-acting
Valve Size
DN 80-2800 (NPS 3 - 112)
Pressure Ratings
ASME class 150 -1500; EN PN 10 -160
Carbon Steel, Stainless Steel, Low Temperature Carbon Steel, High Temperature Alloy Steel, Austenitic Stainless Steel, Duplex, Super Duplex
MR 0103 / ISO 17945 and MR 0175 / ISO 15156 compliant* (*based on material)
Shutoff Class
ISO 5208, EN 12266 - 1, API 598
Communication Protocol
HART, Fieldbus
Power Source
Design and Manufacturing Standards
API 609, EN 593; ASME B 16.34, EN 12516
Fire Safety Test Standards
API 607
Safety Integrity Level
SIL 3 capable
Area Classification
Welding, Fire Safety, Fugitive Emission
CSA, FM, ATEX, IECEx, ABS Atex Directive 94/9 PED 97/23/EC IP66 / IP67M
Other Configurations
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.


  • Solutions are engineered, built, and tested to meet specifications and operate as a complete valve assembly.
  • Complete factory documentation is maintained, including serial card, assembly birth certificate, and assembly hookups
  • SIL verification and certification services
  • Single point of contact for quotes, orders, and support
  • Intelligent, digital valve assembly
  • Skilled staff of Certified Functional Safety Professionals (CFSP)
  • All Digital Isolation solutions provide the same service and reliability that is expected from any Fisher product.