Check Valves TRIZ Cases

A conical valve seat and holed membrane improve one-way sealing, limit volume variation, and support precise pulsatile micro-pump dosing.

Separate stopper and tubular parts create compact fuel passages that improve valve accuracy, durability, and manufacturability under high pressure.

A damped break check valve slows hydrant shutoff after impact to limit water loss, water hammer, and pressure spikes.

Built-in inflating component storage removes the need for separate tools while the spring-loaded valve core maintains sealing for easy inflation and deflation.

An integrated valve unit and lid-driven pushing tool let the valve body and seat be replaced quickly without disconnecting piping.

An integrated valve unit with a seat grip allows quick check valve seat and body replacement through an access hole without uncoupling piping.

A single valve body combines pressure reduction and relief to respond faster to downstream surges and protect low-pressure irrigation tubes.

Semi-helical plastic springs keep this overmolded container valve closed in storage, then open under upward force for gravity dispensing.

A sealed pressurized chamber and shuttle let one regulator switch sprinkler flow on and off while maintaining water pressure and reducing valve network complexity.

A stem-integrated check valve cuts part count and wear while using a spring-loaded spindle to prevent water backflow and simplify maintenance.

Multiple flexible flaps increase inlet flow in variable cam timing phasers while keeping the check valve compact and cost-effective.

Spring-loaded dual check valves add bidirectional backpressure at subsea BOP ROV ports to block seawater ingress and limit hydraulic fluid loss.

Controlled voids in a homogeneous check valve flapper cut density and moment of inertia, lowering impact forces and valve wear.

A coil spring with separate fitting, locking, and expanding sections keeps the valve engaged and resists deformation under high fluid forces.

A regulator valve, check ball, and separator plate control converter oil pressure to prevent housing ballooning and pump damage.

An integral retaining ring and latching body cuts check valve part count while enabling reliable locking and simpler assembly.

Backward pressure from a multi-spring poppet valve compresses entrapped gas bubbles, improving water meter accuracy and reducing spring-binding.

A ball stop acts as a standoff in a check valve to prevent gasket over-compression, preserve sealing, and speed reassembly.

A deflecting umbrella valve head conforms to the chamber ceiling to block grit lodging, prevent backflow, and reduce IV leaks.

Using pressure-driven self-draining vents, this double check valve prevents backflow contamination while clearing trapped liquid to avoid freezing.

Folded auxiliary leaflets deploy during valve expansion, letting a prosthetic valve accommodate patient growth without reimplantation.

A biased VR plug assembly seals automatically when disconnected, while a pin-held open state maintains wellhead fluid flow with fewer leaks.

Integrated ball valves and direct threaded outlets eliminate washer leaks, cut fitting count, and simplify drip line installation and service.

A flapper and ball-sealed valve prevents backflow and cross-contamination in potable water drains without an air gap or line pressure.