Start by assessing the water characteristics, solids content, and flow rates. Next, compare pump shutdown deceleration, static head, operating pressure, and overall footprint. AVM offers multiple engineered configurations to address these specific operational requirements. Count on VAMECA for dependable local support—from initial quote review and engineering drawings through to verified service conditions.
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Metal or resilient seating, lever, and damping options engineered for water service pipelines.
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Double-eccentric design and optional hydraulic damping, particularly for large-diameter applications.
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Dual-plate design in a compact wafer body. An ideal solution to consider when space is at a premium.
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Axial movement available in Silent, Venturi, Ring, and Light Disc designs to match your specific requirements.
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Integrated flexible hinge
An integrated hinge in the disc
The disc features a metallic and textile reinforcement fully encapsulated in an elastomer, with its flexible section functioning as the hinge. This engineered design eliminates the need for an exposed hinge pin and bearing assembly directly within the flow path.
Access Valve Internals
Upon opening, the disc clears to allow flow through the valve. Upon closing, it seals securely against the seat. The top cover provides access to the assembly for maintenance, provided sufficient clearance has been allocated around the valve.
Verify velocity and system transients
This design principle is well suited for certain high-solids effluents. However, it must be evaluated against the station's flow velocities and transient operating conditions.
DN50 to DN900. The brochure covers PN6 to PN16 ratings, with PN10 and PN16 specified based on your project requirements.
Dimensions, Materials, and Standards · Swing Flex
For flow velocities exceeding 3 m/s or severe transient conditions, consider an alternative technology evaluated against your system's operating data. The AVM check valve comparison guide is an essential tool to help prepare and streamline this selection.
Deceleration Response
AVM Recoil Section · Inclined seat, disc, and split body.
Limit travel and inertia
The inclined seat and disc design reduces the travel required to achieve full closure. The lightweight disc minimizes inertia, while the expanded body facilitates smooth, optimal fluid flow.
Flow Shut-Off and Throttling
This design aims to close before significant backflow develops; however, its efficiency depends on the rate of flow deceleration. A check valve's dynamic response must always be matched to your system's actual flow dynamics.
Select Construction
The brochure outlines single-disc and multi-door configurations, with multi-door designs specifically featured for large-diameter applications. The selected construction type must be clearly specified in the quotation.
DN80 to DN1600 available in our comprehensive product brochure. Pressure ratings from PN6 to PN40, depending on valve construction.
Dimensions, Materials, and Standards · Recoil
In critical installations, the check valve's dynamic curve and transient surge analysis enable the precise evaluation of reverse flow velocities and pressure surges during pump shutdown.
Swing Check Valve
A hinged disc
Flow lifts the disc. As flow decreases, the disc returns to its seat to prevent backflow. The design provides an unobstructed waterway when the disc is fully open.
Operating Options
The seat selection is engineered to match your specific sealing requirements and process media. AVM offers a comprehensive range of options, including a counterweighted lever, safety guard, bypass, limit switches, and a bottom buffer. These configurations allow us to tailor the equipment to your facility's exact operating conditions and local maintenance practices.
Swing Check Valve · Tailor options to the station
DN50 to DN2000, PN10 to PN40 in the AVM brochure.
Dimensions, Materials, and Standards · Swing Check
The disc travel and inertia work against the system's deceleration. For fast pump shut-down scenarios, also consider the short closing stroke of the Recoil check valve.
Tilting disc check valve
Tilting Disc · Engineered for High-Flow Applications
An offset stem
The disc pivots around an offset shaft. This geometry differs from swing check and axial disc designs. Both the flow passage profile and the disc opening directly impact pressure drop.
A shut-off solution to evaluate
For large-diameter water supply or discharge lines, valve selection balances flow rate, pressure, closing dynamics, and access to external components. Optional dampening systems allow for a tailored, controlled closure engineered in direct consultation with the project designer.
Available across the range from DN80 to DN4000, with pressure ratings from PN10 to PN40.
Dimensions, Materials, and Standards · Tilting Disc
The "tilted disc" designation is not a substitute for closing data. A comprehensive piping system analysis is required to determine the need for damping and its precise adjustment.
Dual plate check valve
Dual-plate design, compact face-to-face dimensions
The dual plates open in response to media flow. This design delivers reliable check valve performance within a compact face-to-face installation length. The AVM visual illustrates the dual plates and their return spring.
Control travel
To integrate this check valve, verify the mating flange bore clearance, disc swing travel, and adjacent piping components. Providing a general piping arrangement drawing during the RFQ stage ensures our technical team can confirm these critical clearances up front.
Duo-Check · The Compact Dual-Plate Check Valve
DN40 to DN800, PN10 to PN64 in the AVM product line.
Dimensions, Materials, and Standards · Duo-Check
For effluent containing fibres or heavy solids, verify the internal port area of the Swing Flex against a dual-disc check valve before making your selection.
Axial check valve
AVM Nozzle · Silent version with axial guidance and spring.
Axial guidance
The disc travels along the pipeline's centreline axis, unlike a swing check mechanism that pivots. The visual for the Silent version illustrates the centre-guided design and spring assembly. This internal geometry provides an alternative solution for valve response as flow rates decrease.
Four models to compare
AVM offers this technology in four distinct configurations: Silent, Venturi, Ring, and Light Disc. Selecting the optimal variant depends on your specific face-to-face dimensions, flow passage requirements, materials of construction, and target dynamic performance.
DN80 to DN2200, PN10 to PN40 for the product line.
Dimensions, Materials, and Standards · Nozzle
Not all variants share the same face-to-face dimensions or bore sizes. Ensure the selected part number aligns with your piping layout and hydraulic service conditions.
01 / MEDIA
Start with what flows.
Whether handling clean water, slurry, or media with suspended fibres, please specify the nature and size of solids, process temperature, and cleaning requirements. The internal bore and seat configuration must be precisely engineered for this service.
02 / HYDRAULICS
Assess the pump shutdown.
Gather the minimum and maximum flow rates, static head, and shutdown scenarios. Disc travel, inertia, and damping options must then be evaluated against system deceleration and transient surge analysis.
03 / INSTALLATION
Preparing for seamless integration and maintenance.
Please provide the diameter, flange specifications, face-to-face dimensions, and orientation. Verify disc clearance, adjacent equipment, and the necessary clearance for maintenance operations. Supplying a drawing and the existing nameplate will expedite your replacement request.
