Check Valves TRIZ Cases

Interior lid channels and threshold valves relieve excess pressure to prevent gasket lift, API leakage, and uneven well filling.

A rotatable valve plug and elastic backflow preventer block vacuum-line contaminants in dental suction, helping maintain sterility between patients.

A deformable connection element secures the shutter inside the valve body, reducing parts, assembly openings, and leakage risk.

Additive manufacturing turns the body, spring, and shutter into one aircraft fuel check valve to maintain electrical continuity and cut corrosion risk.

A rotating shutter and floating piston keep hydronic flow constant under pressure changes while fitting narrow heating-cooling installations.

A movable wiping extension clears particulates from an IV check valve, maintaining one-way flow and reducing unreliable backflow.

A bonnet and retainer let the valve seat be replaced inline, avoiding pipeline disconnection and reducing maintenance downtime.

A flexible spacer with ventilation bores limits valve seat movement, cutting clicking noise in vehicle cabin levelling valves.

A perforated downstream plate breaks vortices and pressure fluctuations in a dual-flapper check valve, cutting flutter and wear.

A modular flow guide redirects inlet flow into the valve seat to cut turbulence, pressure drop, and repair time in compact backflow assemblies.

A mechanical valve balances pressure automatically in inflatable products, preventing over-inflation without sensors or manual monitoring.

A position-block-supported pivot pin removes body-wall leak paths, enabling compact backflow control with lower water loss and less water hammer.

A leaked-liquid chamber and three one-way valves isolate e-liquid from sensors and batteries while stabilizing airflow and blocking aerosol reflux.

Integrated test covers and a removable dual-zone cartridge shorten backflow assemblies while simplifying pressure testing, repair, and maintenance.

A valve seat that straddles the flow-path center line balances pressure in an oblique-lift check valve, cutting vortex formation and pressure loss.

A dual-ring flash seal closes sequentially to block particulates from the inner seal and prevent low-flow leakage in medical fluid sets.

A bidirectional slot-and-protrusion cap transmits higher torque to a threaded valve base, making inflated bladder deflation easier.

A weakened sealing region and flow openings let this crankcase vent valve close at low vacuum while draining oil and limiting pressure loss.

Articulated pads and a support foot hold a swing check valve flap shut for hydraulic tests without welding, enabling safe sealing by one worker.

A telescoping spring retainer and reversible valve member simplify backflow valve assembly and repair, cutting errors and downtime.

A covered valve secures the protective wrapping to the internal bag, strengthening the join and protecting fluid access during transport.

Straight and curved recess segments spread seal stress in fluid-end valves, reducing wear, erosion, and seal separation under high pressure.

A wavy resilient metal seal replaces elastomers in a check valve poppet to maintain a fluid-tight seat across temperature variations.

A movable, pressure-balanced resistor varies channel resistance to keep fluid flow constant despite inlet pressure changes.

A smooth guidance element and liquid gap reduce turbulence, noise, and dripping while keeping atomizing nozzle closure precise.

Discrete pressure and vacuum valves with a removable flame arrester cut blockage risk and simplify maintenance in industrial venting.

Dual upstream and downstream guides spread valve seat wear in fracturing check valves, extending service life and reducing maintenance.

A partition wall and flexible diaphragm stop fluid backflow inside quick connectors without major redesign or added packaging burden.

Pressure-driven diaphragm venting removes accumulated air from pipes continuously, helping prevent safety-related functional deterioration.

An integrated double check valve uses vented self-draining to stop backflow and prevent freeze damage with fewer parts.

An elastic drain insert replaces the evaporating water seal with a self-opening closure that blocks odors while allowing normal wastewater flow.

A spring-loaded check valve and float vent stop outside air entering during depressions while still releasing trapped gas from heating and water circuits.

An upstream elongated filter blocks grit before it reaches the valve seal, preventing leaks and backflow without a separate filter assembly.

A vertical piston layout prevents backflow while cutting pressure loss, false discharge, and debris-related failures in water supply lines.

A color-changing diaphragm shows IV check valve patency under fluid pressure, enabling visual flow confirmation without disassembly.

Dual O-rings, angled grooves, and a conical plunger improve sealing and pressure relief reliability in high-pressure underwater use.

Two elastic membranes seal against leakage yet open under pressure difference to vent an oral irrigator container without film breakage.

When calcium buildup blocks a tap aerator, an elastic shutter opens a relief path to discharge excess pressure and prevent breakage.

A movable element and biasing mechanism vary flow resistance with pressure changes to keep infusion delivery accurate without pumps.

Curved chamber surfaces and an umbrella valve head stop grit lodging at the inlet seal, reducing leaks and reverse flow in IV check valves.

A spring-biased valve head and guide assembly compress entrained air while limiting radial movement that can bend the shaft and skew meter readings.

Integrated friction teeth stabilize a flexible check valve diaphragm to suppress flutter noise without reducing flow area.

A split closure and connection tab layout keeps the valve seated under counter pressure, improving seal-tightness while minimizing pressure loss.

Fin-shaped struts and deflecting slides redirect inlet liquid around cantilever obstacles, cutting drag and improving constant-pressure regulation.

An offset pivot and dampener let a hydrant break check valve shut after impact while limiting water loss, pressure spikes, and water hammer.

A rotating pivot and sealed internal support help this compact check valve prevent backflow, cut leaks, and reduce water hammer.

A snap-fit seat ring, U-shaped O-ring groove, and clip structure simplify valve assembly while preventing seal dislodgment under pressure.

A molded support washer and centered conical spring distribute force evenly, preventing tilt and improving crankcase pressure sealing.