Plug Valves TRIZ Cases

A retractable load support holds the ball against pipe pressure, enabling low-pressure inflatable sealing without blocking flow when deflated.

A transverse pivot closure at the filling outlet fully opens the channel, cutting wear, flow resistance, and contamination in bulk filling.

A rotatable valve stem with bayonet coupling prevents urostomy tube kinking, maintains urine flow, and reduces leakage risk.

A rotating valve element and rectangular port create a more linear opening area, improving flow-rate accuracy in temperature control.

Fluid pressure-assisted sealing and an elastic bias member cut rotary plug valve torque and seal wear while maintaining a fluid-tight seal.

Pump-pressure-actuated master and slave valves isolate ESP bypass tubing during shutdown to prevent backflow, drainage, and sediment buildup.

A soft insert backed by a harder housing improves valve sealing while limiting creep, thermal degradation, and operating torque.

By moving the disc into a belly pocket and keeping the stem out of the passage, this valve cuts pressure drop and raises flow coefficient.

Curved shutter plates split pressure and flow into stages, cutting valve noise and cavitation while preserving high Cv/Kv capacity.

A side-offset disc and nonintruding stem keep the flow path clear, cutting pressure drop while raising valve Cv and easing maintenance.

A narrowed inlet guides coolant and debris into the valve body interior, protecting the seat interface and reducing coolant leakage.

A dissimilar metal ring is fused into the valve port during casting to resist erosion and corrosion without shrink-fit stress risers.

A rotatable ball with first and second bores plus an internal bore valve enables multiple flow states with fewer parts and lower pressure loss.

Embedded stem and valve channels raise steam velocity to clear residue from hard-to-reach parts, reducing stem torque and buildup.

Multiple annular cutting teeth indent the body before shearing, reducing cutting load and limiting sealing-surface damage that causes leaks.

Hydraulic seat-ring pressure control cuts ball valve friction and wear while preserving sealing and easing cleaning and maintenance.

Balanced pressure-receiving surfaces offset fluid-pressure changes to keep valve seat contact force stable and prevent leakage.

A nested extender and cover keep insulated ball valve handles accessible while limiting condensation, heat loss, rust, and mold.

By fixing the drive gear directly to the valve shaft, this valve cuts pressing plates and screws to reduce parts, weight, and assembly complexity.

A split seat surface lets the ball valve seal at closure while shifting sliding contact during opening to reduce wear and leakage.

Mechanical axial wedging and independent upstream/downstream seals create compact double positive isolation in high-pressure, high-temperature service.

Different alloys, hard coating, and a recessed rotor arc prevent valve sticking during long stationary operation while preserving sealing.

By moving the flow closure downstream of the heat exchanger, this case simplifies heat recovery hardware and avoids valve warping and uneven heating.

A rotatable core housing lets treatment or measurement units be swapped into pipelines while blocking flow for quick, sealed maintenance.

A replaceable seal carrier insert shifts abrasive wear away from the valve body bore, preserving sealing integrity and reducing repair downtime.

A gravity-wall valve routes fluid upward against gravity to block backflow, improve small-volume accuracy, and support aseptic compounding.

A clamped valve seat replaces titanium fasteners to avoid galling, simplify seat replacement, and maintain sealing in corrosive abrasive service.

An optical sensor gate monitors aircraft fuel tank valve position outside the flow path, improving failure detection with fewer electrical parts.

A durable ALD coating on metal-to-metal seals cuts friction and wear, extending oilfield seal life under harsh pressure and chemical exposure.

A load-cell-guided assembly jig stabilizes end piece alignment and sets ball-seat contact pressure to reduce leakage and stiff valve operation.

Compression-molded PTFE over stainless steel helps valve stem seats resist harsh sanitizing chemicals while maintaining impact strength.

Constant seat-bushing contact and pressure differential keep a metal-to-metal valve seal engaged, reducing grease loss and seal degradation.

A movable air gate and conforming seal assembly block selected outlets to cut leakage and improve airflow coordination in aircraft ECS modules.

Coordinated pumps, valves, and bubble or occlusion sensing improve low-volume compounding accuracy while reducing downtime during source changes.

A compliant polymer sleeve lets a ceramic valve seat resist slurry erosion while relieving thermal expansion stress that causes trim failure.

A movable probe and cam locking coupler secures containers, controls chemical flow, and supports rinsing to prevent spills and leaks.

A planetary gearbox and 90-degree worm drive deliver compact valve actuation with lower power use, reduced vibration, and dual manual override.

Small corrosion-resistant bushings replace large precision-machined bores, improving stem fit, reducing rust risk, and speeding valve assembly.

A suction-actuated one-way valve lets tanker hose fluid flow during pumping while blocking positive-pressure leaks and spills.

A pressure ridge and narrow clearance let a cryogenic floating ball valve seal in both flow directions while venting evaporated gas.

Rotatable fittings and O-ring joints let multi-port hoses turn freely, easing installation near walls and reducing kinks that restrict flow.