Plug Valves TRIZ Cases

Incremental aperture rotation and guide vane flow shaping reduce choke valve erosion, extend orifice plate life, and improve flow control.

A rotary control element alternates seal compression and de-stress to improve multiport valve sealing, seal life, and operating force.

An annular pressing part and rigid holder stabilize a resin passage member, preserving rotary valve sealing under constant spring bias.

Protruding cage ends and limit blocks reset planetary rollers during non-load rotation, cutting torque and limiting axial offset.

A single servo with freewheel coupling independently drives two valve closure bodies, cutting actuator count, energy use, and integration space.

A spring end support constrains vibration-driven spring shift, reducing sleeve abrasion, preserving spring force, and minimizing cooling water leakage.

A threaded knob-and-nut actuator replaces bulky quarter-turn valves, enabling compact, lighter flow control with precise on/off travel.

A flexible metal valve seat arm maintains sealing contact across pressure changes and tolerances, preventing ball valve leakage.

A lost-wax molded monobloc body and plug remove multiple welds, cutting thermal stress and production time while preserving high-pressure sealing.

A variable-area mask vent adjusts exhaust flow to improve CO2 washout while reducing noise, exhalation pressure, and power use.

End-groove seals press on replaceable plugs instead of the fluid end body, cutting erosion damage, leakage risk, and repair downtime.

An internal inlet obstruction deflects cross-flow in a mixing valve, protecting temperature readings in heating and cooling circuits.

A sealed housing and internal gear reduction layout protect the electric valve motor from moisture, reducing short-circuit risk and improving reliability.

An overmolded rigid-flexible valve member forms its own ring gasket, cutting manual assembly steps while preventing gasket dislocation.

Radial housing ports and an inverted 90-degree flow path cut valve axial length while preserving consistent coolant flow distribution.

A variable valve inlet creates pulsatile flow and pressure in a vascular tube, improving interventional testing and training without complex heart motion.

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

A wedged triangular soft ring with anti-extrusion C-rings converts axial load into radial sealing, enabling stem seals to withstand maximum working pressure.

Flattened ball shaft surfaces and a cam profile limit seal contact during rotation, cutting wear and leakage while extending valve life.

An axially sliding ring locks compact rotary valve handles against rotation and removal without separate lock parts that can be lost.

An elastic intermediate piece with convex-concave geometry helps fluid valve seals absorb tolerances, improve sealing action, and simplify assembly.

Strategically placed purge ports split flow into the valve passage and cavity, blocking entrained material entry during operation.

An eccentric rotor with localized abradable sealing cuts exhaust leakage while avoiding valve sticking, wear, and actuator overload.

Integrally formed apertured sealing portions replace multiple O-rings to cut friction, simplify assembly, and reduce seal damage in plumbing fittings.

Injection-moldable fluororesin seals lower valve manufacturing cost while reducing rotor wear, friction, and cooling water leakage.

An elastic valve tip seals the opening while spreading closing force on contact, preventing finger injury without slowing food dosing.

Oblique channels in concentric cylindrical valve trim split and dissipate fluid energy to curb cavitation, vibration, noise, and turbulence.

When a ball valve blocks ultrasonic paths, upstream/downstream pressure sensing and valve position data keep flow measurement and regulation active.

A retained control seal and overmolded nozzle tip reduce leakage, valve sticking, and sputtering in handheld fluid dispensing.

A modular pump and valve manifold keeps fluids separate until dosing, reducing setup errors, downtime, and small-volume inaccuracy.

Axially offset small valve openings preserve steady flow control while shrinking valve diameter, actuator load, and wear.

A sleeve-held removable seat ring and separate plug-stem assembly maintain steam valve sealing while cutting repair time and replacement cost.

An annular conduit in the coupling body enables valve heating or cooling while keeping standard valve housings removable sideways for maintenance.

A positioning pin and D-shaped shaft force one-way valve assembly, preventing false position indication in fire suppression systems.

Engagement prongs and a multi-notch outer sleeve lock the handle in open or closed positions to prevent unintended valve movement.

A rotating rinse head and cam lock let this closed-transfer probe restrict flow, secure containers, and reduce chemical spills during transfer.

A semi-trunnion ball and bonnet-loaded seats keep coker switch flow continuous while reducing fouling, leak paths, and steam use.

A reoriented ball valve enclosure cuts leak risk in side-handle faucets while preserving compact footprint, repairability, and wheelchair clearance.

A nonuniform housing inner wall lets rotating valve motion expel coolant debris, reducing clogging, load torque, and pressure loss.

Concavity-generated vortices create a non-contact seal in rotary valves, reducing leakage, wear, and turbine efficiency loss.

A retainer ring supports the dynamic seat ring to limit deformation, reduce wear, and keep ball valve sealing reliable under harsh testing.

Internal cavity pressure and temperature tracking reveals seal leaks, leak severity, and remaining seal life in double block and bleed valves.

Oblique channel patterns in a cylindrical flow body dissipate pressure and velocity smoothly to limit cavitation, turbulence, vibration, and noise.

An integrated handle pause assembly lets users reach and adjust showerhead water flow through an actuator-driven valve path.

A dielectric cam shaft isolates motor faults from a metal ball shaft while preserving torque transfer under resistance and wet exposure.

Fluid pressure between overlapping upper and lower seats protects the seat pocket from erosion, reduces washout, and simplifies valve repair.

A stepped press-fit angle shaft improves valve rotation detection accuracy by reducing tolerance stack-up and preventing inclined fitting.