The triple offset design enables frictionless disc rotation against the seat during operation. Paired with a laminated metal seal and a Stellite-faced seat, this robust construction is engineered to deliver reliable performance in demanding industrial applications.
ZETRIX 016 · 018 · 019
Steam · Gases · Liquids
Metal-Seated Triple Offset
ASME · API 609 · NPS
Triple-Offset Technology Engineered for Your Industrial Processes
ARI ZETRIX is a series of triple-offset butterfly valves engineered for the isolation of industrial fluids. Its geometry allows for frictionless rotation between the disc and seat, while the laminated seal ring and Stellite-faced seat ensure reliable, metal-to-metal shutoff. Three configurations are available to meet your process piping connection requirements: double-flanged 016, threaded lug 018, and butt-weld ends 019.
01
Reliable Shut-Off
ZETRIX combines a triple-offset design with a laminated metal seal ring to ensure bubble-tight shut-off.
02
Durable Operation
Triple-offset rotation minimizes seat friction, maximizing mechanism service life.
03
Mounting Options
Available in double-flanged, threaded lug, and butt-weld configurations, depending on the product line and figure number.
04
Automation
Manual gear operator, or pneumatic, electric, or hydraulic actuator depending on the service.
A proven metal-seated sealing technology, engineered with three end-connection options for seamless integration into North American industrial facilities.
TRIPLE OFFSET · DOUBLE FLANGED
ARI ZETRIX 016 ANSI
Triple-offset butterfly valve with metal-to-metal seating, engineered with a Stellite-faced seat and a self-centering laminated seal ring. Double-flanged body in carbon steel or stainless steel, designed for reliable performance in steam, gas, and industrial process applications.
Construction
Triple Offset
Class
Class 150 · Class 300
NPS Sizes
3″ to 48″
End Connections
Double-Flanged
Engineered for steam system isolation, power generation, petrochemical applications, and ASME flanged process piping.
TRIPLE OFFSET · THREADED LUG
ARI-ZETRIX 018 ANSI
ZETRIX triple-offset butterfly valve with lug-style tapped holes. Its compact design combines a Stellite seat, laminated seal ring, and carbon steel or stainless steel body. A dependable solution engineered for steam system isolation and ASME-flanged industrial processes.
Construction
Triple Offset
Class
Class 150 · Class 300
NPS Sizes
3″ to 24″
End Connection
Threaded Lug
For lug-style installations on steam, petrochemical, and industrial process systems.
TRIPLE OFFSET · BUTT WELD
ARI ZETRIX 019 ANSI
Triple-offset butterfly valve with butt-weld ends. The ZETRIX 019 features the series' proven metal-to-metal sealing system with a Stellite-faced seat and laminated seal ring, engineered with a BW connection for industrial welded piping systems.
Construction
Triple Offset
Class
150 · 300
NPS Sizes
3″ to 32″
End Connection
Butt Weld (BW)
Engineered for steam, power, and process piping systems requiring a weld-end valve.
Which ZETRIX configuration is right for your application?
All three ZETRIX models feature triple-offset design and metal-to-metal seating. Your selection depends primarily on end connections, pressure ratings, nominal size, and the specific operating conditions of your facility.
Valve Technology
ZETRIX 016 · Double Flanged
Triple-offset design with metal-to-metal seating for flanged process piping systems.
ZETRIX 018 · Lugged
Triple offset with threaded lug connections for industrial piping systems.
ZETRIX 019 · Butt Weld Ends
For installations requiring permanent butt-weld connections.
Specifications to be defined
Media and Temperature
Steam, gas, hot water, thermal oil, or process fluid.
Flow Rate and Pressure
Operating flow rate, nominal pressure rating, and shut-off pressure differential.
End Connection and Actuation
NPS, Class, double-flanged, lug, BW, and desired actuation type.
Send us your NPS, ASME class, media, and operating conditions. Our specialists will engineer the right ARI butterfly valve selection for your application.
Butterfly Valves for Demanding Applications
From steam distribution systems to petrochemical facilities, ZETRIX 016, 018, and 019 valves deliver engineered configurations tailored for reliable fluid isolation and process automation.
DESIGN AND ACTUATION
Metal-to-Metal Sealing and Actuation Options
Disc geometry and actuation directly impact shut-off performance, service life, and automation capabilities. The ARI product lines offer multiple engineered configurations tailored to your specific operating conditions.
Stellite-faced seat and laminated seal ring
Stellite 21 hardfaced seat and floating metal ring engineered for consistent, reliable sealing.
Frictionless rotation
The triple offset design disengages the disc from the seat during operation to minimize wear and maintain dependable shut-off performance.
Gearbox or Actuator
Manual operation, or pneumatic, electric, or hydraulic actuation featuring an ISO 5211 mounting interface.
Request a Quote for ARI ZETRIX Valves
Whether for an existing part number or a new project, here is the key information required to provide a quote tailored to your facility.
Application
Media and Temperature
Steam, gas, liquid, or thermal oil, and operating temperature.
Terms and Conditions
Pressure and Flow
Operating pressure, flow rate, and shut-off differential pressure.
Dimensions
NPS and Class
Pipe diameter and required pressure class.
Configuration
Assembly and Actuation
Flanged, lug, butt weld (BW) ends, manual or actuated operation.
Complete your project with ARI valves
VAMECA also supports STEVI control valves, CONA steam traps, and ARI pre-assembled engineered systems for your industrial piping networks.
Control & Regulation
ARI-STEVI
Control valves engineered for precise flow, pressure, and temperature regulation.
Steam Blowdown
ARI-CONA
Steam traps engineered to efficiently discharge condensate from pipelines and industrial processes.
Systems
ARI-System
Pre-assembled packages for heat exchange, pressure reduction, and steam trapping.
FAQ
Models 016, 018, and 019: ANSI pressure classes, end connections, sealing systems, and actuation.
Planning a project with ARI ZETRIX butterfly valves?
Need to replace an industrial valve or equip a new piping system? VAMECA delivers trusted technical expertise to help you select the optimal valve configurations and actuators for demanding industrial applications across Canada.
A Dedicated Technical Representative in Quebec
Technical expertise and project quotes tailored for your Canadian operations.
Sizing
Engineered selection based on media, flow rate, pressure parameters, and connection type.
Technical Documentation
ARI technical data sheets and specifications tailored to your project.
