Check Valves TRIZ Cases

Two series-coupled poppet valves maintain a subsea pressure seal despite corrosion or fouling, while enabling venting, evacuation, and backfilling.

Conical stepped geometry and vibration-assisted assembly keep the valve member seated, improving closure and preventing backflow.

Integrated straining, drain-out debris removal, and access-port servicing keep swing check valves from sticking and cut maintenance downtime.

A spring-biased plunger and poppet regulate service pressure and vent excess fluid pressure to reduce leaks and protect machine components.

An integrated center retainer secures reed cages and petals without separate inserts, cutting assembly steps, cost, and errors.

Internal test passages and replaceable cartridges enable dual-zone pressure checks in a shorter backflow assembly with faster repair.

A grooved seat with a dampening ring cushions high-velocity reverse flow, reducing flapper impact, leakage, and valve wear.

An integrated ceramic plate, balancing valve, and check valve stabilize mixed water output while reducing faucet noise, wear, and reverse flow.

Magnetic valve actuation and an integrated blowdown conduit improve compressor capacity control while reducing wear, maintenance, and pressure instability.

One-way airflow, gulp, and suction nozzle valves contain leaked e-liquid, protect sensors and batteries, and keep vaporization stable.

A flexible diaphragm and symmetric supports enable one-way flow in multi-port medical manifolds while limiting backflow and valve complexity.

A monolithic poppet-spring-retainer valve part cuts assembly time while reducing vibration, thermal stress, and flow losses.

A dual spring and internal weight assembly counteracts check valve oscillation in aircraft inerting gas lines, reducing wear and replacements.

A slit-based fill valve uses stored gas pressure to self-seal and refill a compact fastener driver without bulky external air hardware.

Continuous bypass flow pre-pressurizes pool cleaning zones, cutting valve hammering and equipment wear while improving cycle control.

A moving valve sleeve on the stem equalizes startup pressure while restricting abrasive particle backflow into the air pressure control system.

A hydraulic dampener or biasing element slows break check valve closure to limit water hammer and pressure spikes during separation.

A ratchet-driven bottom plate switches pool outlets with water pressure changes, cutting pressure loss and enabling selective flow control.

Biased fixation pins lock the internal check valve closure into blind depressions, removing screw leak paths and simplifying installation.

Pre-stressed recovery components speed duckbill outlet closure, maintain linear form, and block fluid or debris backflow.

A longer guided plunger, inclined exhaust ports, and an anti-rotation washer reduce oscillation and hysteresis for more accurate pressure regulation.

A two-pin link-and-clapper layout replaces sliding contact with rotation to cut valve wear, extend part life, and reduce repairs.

A raised metal seat and compressible elastomer disc seat maintain a durable swing check valve seal across varying pressures.

A conical piston valve stabilizes chemical injection rates while preventing siphoning and backflow under fluctuating downstream pressure.

A non-return ventilation valve admits air during hydrant drainage to prevent negative pressure, residual water, freezing, and corrosion.

A rupture disc and upstream non-return layout cuts head loss, prevents backflow, and enables larger fire suppression cylinders.

A retrofit ball deflector with an upper grate and lower anchor keeps cementing flow unobstructed while fitting existing float collars.

Integrated branches, isolation valves, and gauge ports cut leak paths, simplify appliance plumbing assembly, and reveal clogging in real time.

Segmented valve-seat gaps flush particulates, cut collision noise, and preserve pressure-relief sealing even at cryogenic temperatures.

An all-plastic dispensing pump uses dome-spring actuation and revised venting to prevent rust, resist water ingress, and simplify recycling.

A two-state thermal bypass valve keeps transmission cooler fluid flowing at startup and bypasses blocked cooler lines to prevent overheating.

Negative demand pressure and a check valve let this jet transfer assembly move tank water at 1250-1500 GPM to keep fire engine pumps supplied.

A dome-shaped cavity cuts valve member mass in high-power pumps while preserving valve head strength under abrasive, high-pressure service.

Conical stepped surfaces guide the valve member during assembly, preventing wall hang-up and ensuring full backflow closure in check valves.

A ball check valve at the drainage outlet blocks reverse field discharge, seals lateral connections, and helps retain subsoil moisture.

Magnetic valve actuation replaces wear-prone mechanics while an integrated blowdown conduit releases compressor pressure for stable capacity control.

An orthoplanar spring check valve improves hydraulic tensioner sealing, flow rate control, backflow prevention, and fatigue life.

An odd number of flow paths in the valve seat reduces opposing fluid interactions, promotes laminar flow, and cuts shock-valve noise.

A pre-assembled valve cartridge combines the valve body, spring, and retainer for single-unit fluid end replacement with less service time.

A cam arm stopper engages the check seat during seal retainer removal to block torsion spring rotation and prevent violent maintenance movement.

A variable-volume inner chamber and venting passage damp check valve oscillations, cutting noise and wear across changing airflow.

Real-time card imaging verifies identity and overlays activation prompts and card education to simplify credit card onboarding.

An integrated oil barrier and dual-ball cartridge check valve blocks hot gas and debris during shutdown while keeping lubrication available.

Combining a backflow preventer and pressure regulator into one connector simplifies beverage dispenser plumbing and cuts installation effort.

An adjustable spring-loaded poppet valve oscillates to break up air pockets, reduce turbulence, and improve water flow meter accuracy.

Integrated antirotation features in the reed and backer enable single-step compressor valve assembly with one fastener, reducing tooling and cost.

A slit in a liquid-injection-molded elastic valve body cuts leakage and backflow while avoiding the tight tolerances of medical check valves.

A low-rigidity valve element deforms for tight sealing, then locks against a support surface to resist high pressure, breakage, and noise.

Rounded clapper and hanger surfaces increase friction at the open interface, reducing check valve chatter, vibration, and pin wear.