Triple Offset Butterfly Valve (TOBV)

The triple offset butterfly valve (TOBV) incorporates true triple-offset geometry to produce bubble-tight sealing. The result’s the totally two-way zero-leakage shutoff valve that sets the benchmark for reliable, repeatable isolation performance. Since their introduction to the market more than 50 years ago, triple offset valves (TOVs), which are also known as triple eccentric valves.


  • True triple-offset geometry
  • Totally two-way zero-leakage shutoff
  • Field-replaceable metal seat
  • Life cycle tested for bubble-tight two-way valve performance
  • Commonplace bearing seals
  • Self-centering disc
  • The wide selection of configurations—lug, short (ISO), and long pattern
  • Carbon and stainless-steel manufacturing standard; alternative materials for the asking


Refining and Petrochemical Process
  • hydrocarbon processing
  • Hydrogen
  • Oxygen
  • refrigerant fluids
  • Thermal fluids
  • Hot gases
  • Sulfur (tail gas)
  • Chemical solvents
  • Chlorinated solvents
  • Flare gas

Oil and Gas
  • Isolation of reservoirs and storage
  • Steam piping and condensate
  • Cooling water systems
  • desalinization
  • Desulfurization systems

  • Tank and terminal
  • Tank switching
  • Tank isolation
  • Manifold systems

Offshore Production
  • Gas and LNG process
  • Power and district heating plant
  • Saturated and superheated steam
  • geothermal steam