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Zwick - Tri-Con Triple Eccentric / Offset Valves

The Zwick Tri-Con offers the widest laminated seal ring in the market today, made possible by true cone-in-cone seating design which assures a frictionless opening and closing with lowest torques and without a break-away torque. This unique and robust design makes the Tri-Con rotary process valve the ideal solution for isolation, on/off and control in today’s demanding process industry. Zwick’s proven design provides 100% tightness in gas services enabling it to be used for critical liquid and gas services in synthetic fuels, oil & gas, chemical, power and other global industries. These valves are designed for temperatures up to 815°C as well as cryogenic services. Triple eccentric valves are also known in the industry as triple offset valves (TOV) or triple offset butterfly valves.

Tri-Con - Metal Seated Valves
Triple Eccentric / Triple Offset Rotary Process           butterfly valves
  • SIL 3 Bi-directional -Zero leakage
  • Non Rubbing - Self Centering Disc
  • Metal to metal seats
  • Inherently fire safe & tested
  • Quarter turn torque seated
Size Range
50mm to 2200mm / 2” to 88”
Pressure Rating
PN16 - 100 / ANSI 150 - 900
-196°C to +815°C
End Connections
Double flanged / Lug / Wafer / Buttweld / Gate valve face to face
Body Materials
Carbon steel / Stainless Steel / Alloy steels / Special alloys
Ball Materials
Carbon steel / Stainless Steel / Alloy steels
Seat MaterialsResilient metal to metal
Options & accessories