Browsing from:

Valve & Automation (Pty) Ltd

Zwick Tri-Con Triple Offset Valves

Zwick Tri-Con Triple Offset Valve

The Zwick Tri-Con triple offset valve is a metal seated valve with the widest laminated seal ring in the market today. These triple offset valves are also known as triple eccentric valves or triple offset butterfly valves. The unique design offers zero leakage which is made possible by true cone-in-cone seating design which ensures frictionless opening and closing with lowest torques and without a break-away torque. The robust design makes the Tri-Con triple offset valve the ideal rotary 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. Full repair and reconditioning facilities are available at our Vereeniging and Durban branches. There are hundreds of valves installed in South Africa today in industries like synthetic fuels, oil & gas, chemical and power generation.  Contact one of our technical specialists for a quote today or download the brochure to learn more!


  • Features 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  

Seat Materials

  • Resilient metal to metal

Options & accessories

  • Manual, pneumatic or electric actuators
  • Solid or laminated seal ring
  • High cycle bearings
  • Steam jackets Degreased for oxygen
  • Tri-Shark throttling trim cartridge


  • Steam / Gas / process
  • Severe service
  • Isolation, On/off and control
  • SD & ESD


Click here for more Product Details from Valve & Automation (Pty) Ltd...