Check Valves TRIZ Cases

A check valve flapper uses a sliding hinge pin sleeve to enable vertical lift-off movement.

A testable back pressure valve uses a travel piston and internal channels to enable in-situ testing of pressure barriers.

A rod tool combines a forked stem extractor and a cap with a built-in flare fitting rounding mechanism.

Optimized piston geometry reduces undesirably high pressure losses in aircraft fuel systems, preventing damage to the fuel pump and main housing.

Torsional flexibility in a transverse crossbar allows a vacuum valve plate to pivot for uniform seal contact.

Insertion grooves in the valve pressing member prevent ball separation and reduce noise during assembly.

An ABS plastic insert inside a metal tire valve cap prevents corrosion from incompatible materials while snap-fit features ensure secure assembly.

A ventilation valve uses elastic rubber deformation to discharge internal gas through a permeable membrane.

Cell flow technology dynamically transfers media between interconnected elastomeric cells to provide continuously variable pressure resistance.

Relief valve assembly equalizes downstream pressure via fluid flow path through grooves and orifices to minimize high pressure rise rate in hydrostatic pumps.

Integrating the opening edge and stop element into a single guide mandrel reduces component count and manufacturing costs.

A semi-rigid plate deflects to adjust the flow aperture size in a variable-aperture reciprocating reed valve.

Tapered injection ports accelerate fluid velocity via Venturi effects, eliminating medication residues that cause imprecise dosing in patient lines.

Fibrous fillers in the thermoplastic matrix prevent deformation under stress and improve adhesion during high-pressure inflation.

Segmented flexible flappers expand flow passage two to three times compared to single-opening check valves while reducing device complexity.

A twist-lock air pump uses a rotating cam section to compress an elastic sleeve against a tire valve stem.

Segmented sealing sleeve and elastic ring reduce friction force while maintaining reliable sealing under fluctuating water pressures.

A segmented backflow preventer lowers pump load by routing fluid through a narrow flow path to control differential pressure and maintain relief valve closure.

Segmented spring stiffness and centering prevent lateral plug movement, resolving uneven force misalignment in SCUBA vent valves.

Segmented poppet assemblies in this check valve prevent lodging and simplify maintenance while maintaining seal integrity under variable flow conditions.

An inflatable bladder seals pipe sections while an integrated inflation valve manages internal pressure through a dedicated release channel.

An elastic valve plate adapts to uneven surfaces, eliminating complex machining and plastic seals.

A check valve uses a stop element to separate primary and secondary flappers, distributing impact forces evenly across the pivot mechanism.

A cap unit for puncture repair uses a rubber ball valve with high specific gravity and low rebound resilience to suppress abnormal noise from vibrations.

An asymmetric valve design reduces internal bulb mass to counteract centrifugal forces during high-speed rotation.

Concave guide surfaces on the piston extension minimize turbulence and pressure losses in blow molding machines.

Dowel pins align non-integral valve posts, resolving mounting precision trade-offs against modular design costs.

A spring-loaded valve assembly driven by a compact pump reduces operational time during drilling while maintaining measurement precision.

A flow state controller manages fluid delivery pathways using encoded source identification and clinical guidelines to ensure accurate administration.

A self-setting valve assembly manages hydraulic fluid flow between chambers to regulate pressure, preventing overheating and reducing power consumption.

A valve assembly uses a diaphragm and one-way valves to manage fluid flow between chambers.

A dual plate check valve employs a lockable stop pin assembly between flappers to prevent over-pivoting and reverse fluid flow.

Resilient blocking portion abuts a stepped portion within a segmented valve body to prevent reverse water flow.

Sheet-metal valve bodies with latching hooks reduce manufacturing complexity while maintaining tightness.

Longitudinal protrusions create localized interference fits that resist axial and rotational movement while allowing easy removal.

A filter valve blocks fluid flow when the element is absent using a trigger part.

Curved discharge wall directs membrane disk to preserve flow cross-section under high pressure.

A double-use nozzle adapter uses a rotating switch unit to engage rigid retaining members for connecting to Schrader or Presta valves.

An integrated valve assembly merges a ball segment and check valve to resolve sealing force trade-offs while maintaining standard face-to-face dimensions.

Nested movable checks and seats maintain fluid integrity in the injector, preventing leakage when pressure ceases.

Interlocking guide plates stabilize a low-mass check valve to reduce pressure overshoot and instability oscillations.

A residual pressure valve prevents contaminant entry into breathing oxygen vessels by maintaining internal pressure through a self-service poppet mechanism.

A pneumatic valve device uses a movable member to eject plastic articles from a mold cavity.

A nozzle check valve disc moves axially and rotationally to open the hydrant bore upon pressure increase.

Guide portions on the valve chamber wall constrain the valve ball movement, ensuring predictable operation and reliable sealing without a biasing spring.

An elastic annular valve body deforms under pressure to close a ring channel, enabling compact fluid control without axial guidance.

A compact bicycle pump uses a sliding core tube nested inside an outer tube to achieve efficient air inflation.

An elongated stiffening rib extends from a flat plate portion to an arcuate section, reducing flowbody deflection under high pressure loading.

A valve disc held by a retaining mechanism arrests axial movement against biasing force to maintain an open position.

Inward folds and outward protrusions on an elastomer nozzle wall create radial slits that reduce flow velocity while maintaining liquid-tight sealing.