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Triple-offset butterfly valves
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TRIPLE-OFFSET BUTTERFLY VALVES

Triple-offset butterfly valves

HIGH QUALITY BUTTERFLY VALVES FOR HEAVY DUTY APPLICATIONS

  • HIGH QUALITY with unique features
  • TRUE CONE-IN-CONE SEATING DESIGN (without deforming seatring)
  • LONGER LIFETIME due to frictionless opening and closing
  • SHORT DELIVERY TIME due to large stocks of components. (Sometimes within 1 week!)

Zwick Armaturen GmbH

 

Zwick is a leading German manufacturer with 40 years of experience in the production of triple-offset butterfly valves for heavy duty applications. Thanks to a modern well-equipped production and large stocks, they can often deliver very quickly.

 

Range


DN50 - DN2200 / 2" - 88"
PN10 - PN250 / ANSI 150# - 1500#
Designs: lug, double flange, butt weld and wafer

 

Unique valve seal

 

  • 25° tilted cone
  • Opens and closes frictionless
  • Valve seal does not become deformed


Valve sealing options:

 

  • Multi-layer metal/graphite laminations
  • Multilayer metal laminations


Self-centering valve disc


The self-centering valve disc that is keyed to the shaft, preventing jamming of the valve in the seat due to thermal expansion. 

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Option: patented bearing seal
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The reliable alternative to a ball valve, globe valve or gate valve.

  • Compact design - standardized build length
  • Easy and cost-effective to automate.
  • Good control characteristic
  • No dead space
  • Spindle seal
  • Metal to metal valve seal
  • Fire safe - fire tested according to EN ISO 10497 / API 607 5th edition / BS 6755
  • 2-sided sealing according to EN12266-1 Rate A /API 598 Zero Leakage /API 6D Zero Leakage
  • Option: patented bearing seal to prevent penetration of medium into the bearings. (see sectional drawing)
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Applications

Zwick TRI-CON valves are used in demanding industries on applications ranging from oxygen to flue gases, from cryogenic to superheated steam and in many chemical processes. TRI-CON valves have proven over the years to be reliable, safe and durable. Some examples of applications where TRI-CON valves are successfully used are:


Refineries - desulphurization systems and tail gas treaters / steam / ESD solutions (emergency shut down) in storage of oil and refined products / hot cracking gas / flare gas / blocking pumps

Petrochemicals - embedding propylene plant equipment / oxygen & hydrogen / ethylene cracking plants / PSA & molecular sieves switching valves / flare Isolation / CO2 / butadiene & styrene plants

Offshore - fire extinguishing systems / CO2 switching valves / crude oil insulation

Energy - steam / condensate / boiler feed water / in-blocking pumps / fuel gas

Pulp & Paper -lime & slurries / steam / boiler feed water / green, red & black liquor

Food - hot water / steam / condensate

Chemistry - syngas / nitrogen / acids

Steel industry - hot water / steam / condensate / blast furnace gas / cooking gas / oxygen / hot air / cooling water

 

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