Check Valves TRIZ Cases

Angled sealing line enables bidirectional pressure retention without full rotation, resolving unidirectional limits in oil and gas wellhead valves.

A pressure equalization element uses a membrane and non-return valves to balance housing pressure.

A concealed exhausting valve integrates a spiral spring mechanism within a moisture-proof sealing bag to evacuate residual air and maintain vacuum conditions.

Adjustable flap valve controls cooling air flow rate to reduce aerodynamic disturbances and mechanical stress on turbojet nozzle flaps.

A spacer element limits valve stroke in a torque converter charge circuit, preventing premature spring rupture caused by high fluid pressure.

An elastic blocking tab seals against an inclined valve seat while a conical stop element reduces dead volume and power loss.

A disposable sterile fluid transfer device uses a movable plunger to form a steamable surface that creates a sterile barrier against the environment.

Central mounting post with transverse bores and a locking retaining element secures hinge pins, preventing loosening in aircraft air conditioning systems.

Angled sealing wafer check valve uses disc center of gravity to seal without springs, eliminating spacer requirements and reducing installation complexity.

Variable relief port dynamics reduce piston overshoot and vibration in fuel pressure regulation valves, minimizing noise.

Segmented check valve design prevents false air intake during lateral acceleration while maintaining secure fit under temperature variations.

A medical non-return valve diaphragm disk uses a central support structure to prevent overstretching during rapid closure.

A check valve with a semi-spherical flow rate controlling projecting portion stabilizes steam passage in supply systems.

A tire valve assembly uses a movable part with lips to control pressurized air flow through a stem chamber.