Check Valves TRIZ Cases

A contact structure uses the mounting surface to keep resilient valve lips closed, reducing leakage as wear weakens the seal.

A spool spacer lets a certified backflow valve assembly match existing footprints, avoiding retrofit work and preserving compliance.

A valve bypass route lets fluid return to the reservoir without passing through the pump bulb, cutting resistance and speeding deflation.

An outer seal ring blocks particulates so the inner ring can fully close, preventing low-flow leakage in medical fluid sets.

A thin dome valve part surrounded by a flexible base improves sealing while preventing tearing, deformation, and sharp-cut damage.

A flared piston groove and spring-loaded O-ring replace flat gaskets to improve refrigerant check valve sealing and one-way flow reliability.

A gas-permeable membrane in the valve shaft enables closed-state ventilation, while elastic opening relieves excess internal pressure.

Different-sized bypass valve openings adjust filtration under pressure, keeping engine oil flowing while limiting debris during filter clogging.

A microcontroller-guided pool valve replaces turbine gear switching to cut pressure loss and sequence water zones for cleaning and features.

A two-state valve keeps transmission cooler flow open at startup and reroutes fluid around blocked cooler lines to prevent overheating.

An integrated shroud and retention fork protect the test cock while enabling faster pressure testing and replacement in backflow assemblies.

A locking spring section in a pipe coupling restrains valve-load displacement to prevent coil spring deformation and disengagement.

Camera-based card capture replaces manual activation steps while AR overlays guide setup, explain card terms, and reduce user frustration.

A secondary poppet creates a jetting flow path that clears settled debris before the main valve opens, restoring stable uphole fluid flow.

A T-shaped slot along the web neutral axis cuts valve housing mass while preserving check valve strength, sealing, and reverse-flow blocking.

A secondary valve keeps the relief spring immersed in hydraulic fluid to prevent icing and hold the pressure set point in aircraft cowl systems.

Patterned adhesive channels let a flexible package vent gas at tunable opening pressure while limiting oxygen ingress and burst risk.

A continuous annular valve seat cuts seal disc stress, lowers flow resistance, and simplifies check valve insert assembly.

A damping chamber with viscous fluid slows poppet motion to limit check valve chatter, impact wear, and pressure-transient damage.

A membrane vent adds a relief valve bypass to release enclosure gas quickly during pressure spikes while maintaining contaminant protection.

A variable-orifice hydrostatic valve adjusts opening pressure without disassembly, reducing moving parts, lubrication, and fluid contamination.

Water-pressure-driven ratchet cycling cuts valve pressure loss while directing pool flow across outlets for cleaning and water feature control.

A reconfigurable flapper check valve keeps the drill string open for self-filling during tripping, then blocks upward flow during drilling.

Pressure changes rotate a ratchet-flap valve between outlet ports, cutting pressure loss while enabling pausing and targeted pool flow control.

A flexible slitted disk valve opens at a pressure threshold to support high-flow venous access while maintaining a reliable seal at normal pressure.

A telescoping spring retainer and reversible valve member simplify backflow assembly and repair while maintaining reliable water-flow protection.

Transverse compression from material thickenings closes the slit fully, improving duckbill nozzle valve sealing against backflow and contamination.

A retaining frame on the plug secures the non-return valve while enabling clean replacement without damaging locking tabs or seals.

A retention plate prevents umbrella valve dislodgment under pressure bursts and viscous flow while preserving sealing and flow direction.

A dome-shaped plunger and spring-loaded check valve reduce turbulence and binding under back pressure while maintaining oil flow stability.

A flexible diaphragm and manifold layout enable low-pressure one-way flow while preventing retrograde flow across multiple medical connections.

Dual rupture discs divert excess corrosion inhibitor pressure to a backup branch, maintaining flowline protection with less maintenance in remote sites.

An annularly floating valve seat aligns radially with out-of-round valve rings while limiting axial motion for secure sealing and lower friction.

A bore-fitting stem and biased elastomeric disk create one-way flow control in existing lines without external housings or pipe rework.

Finned frustoconical plunger geometry cuts turbulence and pressure drop in medical gas check valves while preserving backflow prevention.

A secondary flow path jets out settled debris and gas above a downhole check valve, then restores stable production fluid flow.

Tapered valve legs and a wear-resistant seat inlay reduce turbulence, wear, and leakage in high-pressure particulate fluid service.

A threshold-actuated poppet valve blocks unmeasured low flow and releases fluid in measurable bursts to improve flow meter accuracy.

A tall, narrow manifold with integrated check valves fits thin freestanding tub walls while distributing air and blocking water backflow.

A color-changing diaphragm shows IV check valve patency and flow direction under fluid pressure without line disassembly or separate sensors.

A calibrated spring and toggle stopper block low-pressure air from reaching the meter, improving water-flow measurement accuracy.

A switchable valve bypasses the pump bulb during deflation, cutting user effort and shortening inflation and deflation time.

An offset spring and internal dart flow path cut turbulence, wear, and pressure drop in rapidly cycling gas lift check valves.

A springless micro-ball valve plate cuts backflow losses and wear while maintaining durable gas sealing across wide speed and temperature ranges.

An axial discharge path keeps the shutter inside the valve body, preventing lateral fluid spray and external projections on radiators.

A removable cartridge with clipped or bayonet-held anti-reflux parts enables safer valve replacement, leak prevention, and lower maintenance cost.

A removable guide bushing center enables conduit access and replacement without removing the base or damaging adjacent tools.

Two staged check-valve gaps balance flow rate with sealing reliability, reducing grit lodging, leaks, and reverse-flow backflow.

A bell-shaped polyhalogen olefin valve body improves centering and sealing, enabling early crankcase vent closure at low vacuum with low pressure loss.

A curved connecting portion keeps the coil spring from deforming under high compression, so the valve element reliably returns closed.