Products
Triple offset butterfly valves ZWICK TRI-SHARK
Operating principle
The three-eccentric valve design ensures minimal friction and tightness even at high temperatures and pressures.
100% Regulation
100% airtightness
Parameters:
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
