Check Valves TRIZ Cases

Interchangeable threads on a connection bar prevent stainless steel galling while simplifying filter maintenance.

An integrated damping head with internal channels reduces pressure pulsations without adding system complexity or mass.

An elastic lip member seals the faucet water outlet to stop dripping.

Aperture plate with core and flow-directing apertures linearizes fluid entry, deflects particulates, and prevents accumulation within the valve assembly.

Semi-circular plates on concentric shafts adjust angular orientation to balance coal flow and reduce abrasion wear.

Replacing complex multi-cam mechanisms with a single cam pin reduces device complexity while enhancing adaptability to varying workpiece shapes.

Segmenting the control valve with a directional check valve prevents pneumatic noise from triggering unintended emergency braking.

Two series seals in a disposable valve prevent air ingress under pressure, reducing embolism risk.

Segmented seat assemblies maintain cross-sectional area thresholds to prevent premature tool actuation during hydraulic fracturing.

Anti-rotation ribs on the inner valve housing prevent rotational movement, reducing wear and stabilizing pressure-flow characteristics in fuel vapor systems.

A flow path switching valve uses a bypass mechanism to cancel diaphragm sealing contact during movement.

Asymmetric radial tabs on a check valve flange constrain orientation within duct slots, preventing incorrect assembly and simplifying manufacturing.

Convex housing walls distribute pressure evenly, reducing material usage and eliminating local reinforcement needs in pipeline backflow preventers.

Integrating plate and stop elements into a single stamped part reduces assembly effort while maintaining effective sealing in gas-carrying lines.

An asymmetric valve design minimizes high-frequency noise and vibration by tilting the valve axis during operation.

A selectable relief valve spring adjusts maximum fluid pressure in automatic transmissions without removing the unit.

A spring-biased piston valve uses a downstream check structure to block reverse fluid flow and prevent mechanical shaking.

An integrated check valve in the connecting rod body eliminates separate mounting processes, reducing device complexity while maintaining sealing reliability.

An integrated backflow preventer valve merges inlet and drain blocking elements into one part, reducing component count and production costs.

A hardened insert replaces worn valve seat material in salvaged fuel injector bodies to restore precision machining surfaces.

A tire pressure measurement circuit uses a constriction to stabilize air flow, preventing abnormal inflation during frequent checks.

A dual-purpose valve cap uses a rotating device to switch between Schrader and Presta connections.

An intermediate sleeve creates a flat sealing surface for the valve body within the housing cavity.

Frustoconical valve member geometry ensures positive sealing at high backpressures, resolving closure failures during rapid pressure adjustment.

An electromagnetic flow sensor measures lubricant delivery in piston machines, enabling precise dosing that reduces consumption and environmental impact.

A diving watch safety valve uses a gas-permeable membrane to evacuate helium during decompression.

A diaphragm with legs collapses to engage a sealing surface during excess flow conditions.

Optimizing the hinge ear diameter-to-radius ratio reduces fatigue wear and impact damage on compliant stops during high-speed operation.

Internal overpressure augments a biasing spring in a rotary pump, reducing energy waste from excessive pressure at high speeds.

A connecting rod check valve uses a ring band closing element to manage hydraulic fluid flow in variable compression engines.

An intermediary seal bridges gaps between the throttling element and cage, reducing leakage through primary leak paths.

A unitary elastomer venting valve generates closure tension through radial elastic deformation to ensure reliable sealing.

Extending support members distribute contact stress on landing balls, enabling higher pressure ratings and larger seat inner diameters.

Belt-fed mechanism automates balloon inflation and replacement, eliminating manual course entry for volunteers.

A compact pressure relief valve uses a tapering sealing surface to create variable fluid film thicknesses for membrane actuation.

A vacuum-actuated check valve assembly uses a multi-tiered U-groove to disconnect the bolt shaft from the reservoir drain plug.

A recessed central tire inflation valve assembly integrates a poppet mechanism with a rim-mounted manifold for precise fluid control.

An air admittance vent diaphragm assembly uses a malleable washer to prevent gas leakage and maintain pressure equalization in waste systems.

A gas valve incorporates a resilient sealing ring that permits overtravel motion, compensating for dimensional inaccuracies to ensure reliable shut-off.

Post-cured perfluoro elastomer packing prevents valve element sticking at temperatures exceeding 200°C while maintaining reliable sealing.

Segmenting the pressure relief valve into internal and external components prevents hydraulic fluid leakage during calibration adjustments.

V-shaped passages increase flow capacity while annular flanges compensate for axial misalignment to maintain sealing reliability.

A check valve guide member positioned within a larger diameter valve chest increases the fluid passing area around structural ribs.

A bi-leaflet elastomer valve assembly opens under forward pressure and self-closes to prevent backflow in liquid conduits.

A check valve flapper assembly uses a spring and backing plate to bias the resilient body toward a closed position for rapid sealing.

A hollow cylindrical insert with a hinged curved flap and inflow fin prevents backflow contamination while maintaining unrestricted water outflow.

A spout assembly integrates a backflow check valve to control sap extraction flow.

A self-regulating tire valve uses a spring-loaded diverting block to automatically release excess air from pneumatic tires.

A pivoting sealing element mounted on a holding axis prevents jamming and leakage in vehicle drainage plugs.