Yes. This term refers to a double-offset butterfly valve, engineered specifically to perform differently than standard concentric and severe-service triple-offset designs.
AVM · Pipelines & Large Diameters
AVM · Pipelines & Large Diameters
AVM Double-Eccentric Butterfly Valves
AVM Double-Eccentric Butterfly Valves
AVM Double-Eccentric Butterfly Valves
A valve line designed for water line isolation, engineered with geometry that minimizes seat contact during cycling. Construction and actuation options are selected based on line size and differential pressure.
A valve line designed for water line isolation, engineered with geometry that minimizes seat contact during cycling. Construction and actuation options are selected based on line size and differential pressure.
A valve line designed for water line isolation, engineered with geometry that minimizes seat contact during cycling. Construction and actuation options are selected based on line size and differential pressure.
AVM · Explore Construction01 / 03
Double Offset
A flanged construction engineered for water distribution systems.
NPS 3 to 160 (DN 80–4000)
NPS 3 to 160 (DN 80–4000)
Comprehensive product line documentation available.
Comprehensive product line documentation available.
PN10–40
PN10–40
Depending on diameter and construction.
Depending on diameter and construction.
Replaceable Seat
Replaceable Seat
Accessibility must be verified based on the specific installation.
Accessibility must be verified based on the specific installation.
Understanding the Technology
Understanding the Technology
Double-offset and concentric: two distinct engineered designs.
Double-offset and concentric: two distinct engineered designs.
Double-offset and concentric: two distinct engineered designs.
Disengage the seat upon opening
In a double-offset butterfly valve, the stem is offset from both the sealing plane and the pipe centerline. The disc cams out of the seat upon initial opening, minimizing friction across the operating stroke.
Schedule Maintenance
The AVM product line is specifically engineered for water distribution networks and large-diameter applications. While the documented design features a field-replaceable seat, actual maintenance access depends on the specific valve installation.
Distinguishing Concentric Valves
AVM also offers wafer and lug-type concentric butterfly valves. Engineered to accommodate specific face-to-face dimensions and piping connection requirements, these configurations should not be confused with our high-performance double eccentric designs.
AVM wafer concentric design · Note: distinct from the double-offset butterfly valve shown in the table.
Technical Benchmarks
Technical Benchmarks
Compare AVM valve designs.
Compare AVM valve designs.
Compare AVM valve designs.
| Design Point | Documented Information |
|---|---|
| Double-Offset | DN80 to DN4000, PN10 to PN40 pressure classes. Not all configurations are guaranteed to be available. |
| Concentric Butterfly Valve | Documented range from DN40 to DN2000, PN10 to PN16, available in wafer or lug designs depending on the model. |
| Materials | Ductile iron GGG50 with epoxy coating as standard construction. Stainless steel, duplex, and specialized coatings available upon request. |
| Sealing Solutions | EPDM, NBR, or alternative seat materials specified to meet your media, temperature, and project requirements. |
| Face-to-Face | EN558 Series 13 or 14, or AWWA C504 short or long face-to-face dimensions, depending on the configuration. |
| Actuation | Manual gear operator or electric, pneumatic, or hydraulic actuator configured to your specific torque and operating requirements. |
| Design Standards | EN593, EN1074, or AWWA C504 according to the documented configuration. Please specify the applicable standard for the offered model. |
The size and pressure ranges define a product line. The technical proposal must confirm the size-pressure rating, sealing direction, face-to-face dimensions, and testing specifications for the selected valve.
The size and pressure ranges define a product line. The technical proposal must confirm the size-pressure rating, sealing direction, face-to-face dimensions, and testing specifications for the selected valve.
Prepare Your Request
Prepare Your Request
The insights that drive your product selection forward.
The insights that drive your product selection forward.
The insights that drive your product selection forward.
Piping and Connections
Piping and Connections
Piping and Connections
Verify inside diameter, flanges, face-to-face dimensions, and required disc clearance.
Verify inside diameter, flanges, face-to-face dimensions, and required disc clearance.
Torque and Operation
Torque and Operation
Torque and Operation
Please specify differential pressure, flow rate, cycle frequency, and closing time to accurately size the actuator.
Please specify differential pressure, flow rate, cycle frequency, and closing time to accurately size the actuator.
Hydraulic Conditions
Hydraulic Conditions
Hydraulic Conditions
Partial opening requires verification of flow velocities, vibration levels, pressure drops, and cavitation risks.
Partial opening requires verification of flow velocities, vibration levels, pressure drops, and cavitation risks.
Technical Inquiries
Technical Inquiries
Your Questions About Butterfly Valves Answered by Our Technical Experts.
Your Questions About Butterfly Valves Answered by Our Technical Experts.
Your Questions About Butterfly Valves Answered by Our Technical Experts.
Isolation is the primary application featured here. Throttling or control service must be evaluated based on flow rate, differential pressure, and operating openings, particularly to prevent cavitation.
AVM construction features a replaceable seat; however, the replacement procedure and accessibility depend on the specific model and installation. Valve removal requirements should be confirmed directly with the manufacturer.
Compare the flanges, face-to-face dimensions, disc clearance, gearbox envelope, and required performance specifications. Nominal pipe size alone does not confirm interchangeability.
Related Solutions
Related Solutions
Continue your selection.
Continue your selection.
Continue your selection.
Eccentric Plug
Eccentric Plug
Eccentric Plug
A quarter-turn valve engineered for wastewater, raw water, and slurry applications. The eccentric action lifts the plug off the seat upon opening to minimize friction and wear.
A quarter-turn valve engineered for wastewater, raw water, and slurry applications. The eccentric action lifts the plug off the seat upon opening to minimize friction and wear.
Explore the Solution →
Explore the Solution →
Check Valves
Check Valves
Check Valves
Shut-off technology is just as critical as valve diameter. Compare AVM designs to select a reliable solution tailored to your media, flow velocities, and pump shutdown conditions.
Shut-off technology is just as critical as valve diameter. Compare AVM designs to select a reliable solution tailored to your media, flow velocities, and pump shutdown conditions.
Explore the Solution →
Explore the Solution →
Valve Automation
Valve Automation
Valve Automation
Define the control requirements and expected valve performance.
Define the control requirements and expected valve performance.
Explore the Solution →
Explore the Solution →
AVM expertise. Your dedicated VAMECA partner.
AVM expertise. Your dedicated VAMECA partner.
AVM expertise. Your dedicated VAMECA partner.
Technology selection, system compatibility, and technical submittals: let's move forward using your quote, drawings, or existing equipment specs.
Technology selection, system compatibility, and technical submittals: let's move forward using your quote, drawings, or existing equipment specs.