Zwick – Tri-Con Gate Valve ReplacementEnquire Now

Zwick 8211 TriCon Gate Valve ReplacementZwick 8211 TriCon Gate Valve Replacement

BRAND: ZwickCATEGORY: Gate, Globe & Check Valves, Triple Offset Valves,

The Zwick Tri-Con triple offset valve is a metal seated valve with the widest laminated seal ring in the market today making it ideal for the replacement of leaking gate valves. Also known as triple eccentric valves or triple offset butterfly valves, the unique design and special features guarantee 100% zero-leakage performance even during extreme temperature variation and pressure peaks.

This 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, light weight and zero leakage design makes the Tri-Con the ideal isolation valve solution in today’s demanding process industry.

The most popular configuration is double flanged with it’s short face to face. The Tri-Con with gate valve face to face makes for easy replacement of existing heavy and leaking gate valves.  Zwick’s proven design provides 100% tightness in gas services enabling it to be used for critical liquid and gas services.

Our Valve Repair Centres in Secunda and Durban provide a full valve repair and reconditioning service as well as valve automation to assemble and test your valve packages.

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!


SeriesTri-Con - Gate Valve Replacement

Triple Eccentric / Triple Offset

  • SIL3 Certified
  • ZERO leakage bi-directional shut-off
  • Resilient metal to metal seats
  • Quarter turn friction free operation – No seat rubbing
  • Self-centering torque seated disc – True cone in cone sealing
  • Temperature compensating – No shaft to disc pins
  • Supported bearing bushing for optimal shaft support
  • Anti blow-out shaft

80mm to 1800mm / 2” to 70”


PN16 – 100 / ANSI 150 – 900

Temperatures-196°C to +815°C
Double flanged / Lug / Wafer / Buttweld / Gate valve face to face
  • Solid or laminated seal ring
  • High cycle bearings
  • Steam jackets
  • Degreased for oxygen

Carbon steel / Stainless Steel / Alloy steels / Special alloys

Resilient metal to metal
  • Material and/or pressure test reports with cert. to EN 10204 / 3.1
  • Fire Safe acc. API 607 4th ed. and B.S. 6755 for both directions
  • CE-Certificate acc. to 2014/68/EU
  • Anti blow-out shaft API 609
  • Leakage testing to API 598 and/or DIN EN 12266-1
  • Fugitive emissions to TA-LUFT 1 & 2 / VDI 2440
  • BAM-Approval for Oxygen
  • Mounting bracket acc. to ISO 5211

Where you are looking for a light weight, fast acting, rotary valve that also provides zero leakage that is the ideal replacement for large, heavy, leaking and unreliable gate valves throughout process industries. Just the weight saving alone reduces the initial outlay for piping supports and rigging costs.


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