Triple offset butterfly valves – ZWICK TRI-CON

Operating principle

Triple offset valve design ensures minimal friction and tightness even at high temperatures and pressures.

100% airtight – always guaranteed!

A number of unique technical product features, such as the cone-in-cone saddle design with a lamellar seal (METAL-METAL), make the TRI-CON series versatile for many different industrial applications. Zwick valves are used for industrial and flue gases, liquids, hot water or steam. Applications for very low temperatures as well as very high temperatures up to 815°C. TRI-CON is widely used in the chemical and petrochemical industries, the oil and gas sector and in centralized degassing.

Join types

Main features:

Nominal diameter:
from DN 80 up to DN 1600

Nominal pressure:
10-100 bar

Work temperature:
from -40˚С up to +550˚С ; with the possibility of higher temperatures upon request

Body materials:
carbon steel or stainless steel

Gasket materials:

• Metal in metal
• Metal in stainless steel lamella and graphite
• Metal in stainless steel lamella and Teflon

Assembly:

• Between flanges – Wafer type or Lug type
• On flanges according to DIN EN 558/F4, ISO 5752/F16, ANSI B16.10
• On welding

Applications:
For petrochemicals and gas production: platforms, refineries, fuel storage and transit, Chemical and other industries: process, refrigeration, flue gases, steam, etc. power plants and district heating: hot water, steam and processes

Advantages:

• Wide range of sizes: from DN80 to DN1600
• Regulating and locking function
• Maximum working temperature up to 550˚ C with the possibility of higher parameters.
• Tri-eccentric design, guaranteeing a long service life.
• Saddle with a special construction that protects it from contamination and injury.
• Replaceable saddle.
• Hermeticity in both flow directions (the valve does not have a specific installation direction) with tightness level “A” according to DIN EN 12266-1 (1 according to DIN 3230) – zero leakage in both directions
• Seal type: metal to metal
• Self-centering disc, compensating for linear expansions.
• Anti-static design – it is not possible for sparks to form in the valve.
• Special construction of the shaft bearings, which prevents its distortion.
• Fire safety according to API 607 ​​(FIRE SAFE) – remains airtight in case of fire
• Environmental tightness control according to TA-Luft 1 and 2
• explosion safety according to ATEX CEII2G Eexn IIC T6

Catalogue ZWICK TRI-CON
Technical data ZWICK TRI-CON
Portfolio ZWICK
IOM ZWICK TRI-CON