Check Valves TRIZ Cases

A springless fluid valve design controls nozzle extension using positive pressure and material tensile forces.

A pressure regulating valve assembly uses a translating spool and cap to create a sealed metering edge for fluid control.

Air dashpot dampers prevent valve seat damage from chatter noise by cushioning rapid pressure fluctuations.

A check valve assembly uses a pressure interface to link external fluid pressure with the valve member, adjusting cracking force automatically.

An offset valve axis positions the pivot outside the pipe, allowing a tilting element to clear the entire cross-sectional area and eliminate flow resistance.

Metal-to-metal sealing prevents ignition risks while maintaining low leak rates in high-pressure oxygen systems.

Deformable membrane opens duct to admit air while maintaining tightness against wastewater backflow.

An integrated poppet valve cover merges the seal and cap to resist puncture while simplifying assembly.

A subsea pressure regulator uses a spring-biased seal carrier to control fluid flow.

A needle valve seat uses a ball linkage to enable selective rotation.

A one-piece combination dual valve element integrates anti-drain back and relief functions within a spin-on fluid filter end cap.

Screen-based inlet control valve separates vapor from liquid fuel during marine vessel filling, preventing spillage and reducing diurnal emissions.

Spacers protect the duckbill valve from pressure-induced deformation, maintaining vapor venting efficiency and reducing hydrocarbon emissions.

A valve assembly uses a spring-loaded ball and piston to isolate fluid flow based on pressure differences between primary and secondary passageways.

Downstream ribs support the shut-off member while velocity diffusers redistribute fluid flow.

A flexible diaphragm covers a vent to form a unidirectional valve that allows fluid injection while enabling separate component cleaning.

An elastic fuel line secures a check valve to attenuate pressure pulsations in direct injection systems.

A pressure-limiting valve incorporates a dedicated leakage gap to discharge fluid from the high-pressure chamber into a low-pressure space.

A fluid control valve uses a recessed sealing element to lift higher from the seat, enhancing flow capacity.

Cover buckling protection merges with the housing wall to eliminate protruding strips, reducing dirt accumulation and overall height.

A tire valve unit uses an attaching projection to secure a sensor housing while allowing the rubber body to elastically deform during mounting.

A radially secured non-return valve uses a fluid-permeable supporting element to hold the cover within the channel.

A flexible protective cover seals a vent conduit and opens automatically when pressurized fluid discharges.

A combination flow control valve integrates a check element to regulate downstream liquid discharge.

A check valve guide portion redirects fluid flow horizontally to reduce momentum impact on the closing element.

A selectively operated two-way check valve uses a spring-actuated mechanism to control fluid flow direction in subterranean environments.

An adjustable pulsating pool sweep valve uses rotating flow openings to match specific pool sizes, eliminating energy waste from fixed flow designs.

Radial flange attachment strengthens the interface between the valve and thermoplastic rubber, preventing durability loss during expansion.

Folded U-shaped lever amplifies force while reducing device volume, resolving size stability trade-offs.

Integrates a filter medium directly into the check valve housing to prevent backflow in fluid delivery systems.

Removing spool pipes reduces friction loss and misalignment in pressure booster systems, achieving 30-70% more flow efficiency.

A check valve with a piston assembly and test fluid delivery channel verifies closure integrity through direct pressure actuation.

A valve body uses resilient tongues to control gas passage openings in an air-oil separator.

A non-return valve uses a bulged sealing face and axial guiding means to maintain consistent contact with the valve seat.

An intermediate layer bonds the membrane to the base plate, preventing wrinkles and enabling flexible placement on packaging containers.

A gas lift valve assembly uses a fluid flow barrier to direct flow away from sealing elements.

Heat-staked retainer prevents check valve dislodgement, maintaining OEM design integrity and avoiding warranty voids from field modifications.

Frusto-conical sealing surfaces prevent reverse flow while maintaining simple single-piece construction.

A teat cup injector uses a gravity biased diverter to direct treatment fluid horizontally onto animal teats.

A spring vent uses a spherical stopper with an elastic hole to enable easy rod replacement.

A nasal spray non-return valve uses a movable closure body to control fluid flow between sealing surfaces.

An insert part holds the umbrella-like valve element to reduce wear from pressure pulsations while lowering maintenance costs.

Segmenting the valve into a base and insert eliminates fine thread alignment, reducing dexterity demands for users with limited hand function.