Plug Valves TRIZ Cases

Controlled actuator pulses slightly rotate a ball valve to prevent sticking, lower breakaway torque, and reduce fluid stagnation.

Tapered grooves and a rotatable interference body enable minute fluid flow adjustment in infusion valves without losing simple rotary operation.

Rotating communication ports let one outflow port be throttled independently while keeping the other stable in a compact valve layout.

A variable gap between the housing and insert body keeps the seal unpressed when open and compressed only when closed, reducing sticking and damage.

A curved seal contour and sleeve retainer reduce rotary valve friction and wear while maintaining sealing and lowering drive torque.

Vertically arranged two-way valves and a bypass line keep particles off sealing surfaces, preventing exhaust gas leakage to the abatement reactor.

A multilayer hard-lubricious coating helps valve surfaces resist wear, corrosion, leakage, and high actuation torque in harsh service.

A surge-prevention opening and elongate seal let one coolant valve deliver proportional cross-flow while reducing fluid hammer noise and actuators.

Raised ribs on a low-friction inner sleeve concentrate sealing force on the rotor, cutting friction while maintaining leak-resistant valve sealing.

A diaphragm-based locking mechanism keeps a valve sealing member closed until negative pressure is confirmed, preventing premature lift and air leaks.

A position-limiting rib guides the sealing member during assembly, reducing local deformation and improving multi-passage valve sealing stability.

A cartridge valve and compliant overmolded nozzle tip reduce sticking, leakage, and false leak indications in handheld fluid dispensing.

A ball member is inserted with seals relaxed, then rotated by a jig to compress seats accurately and improve valve sealing.

A narrow groove opening and pressure channel keep a worn sealing member pressed to the chamber wall, reducing valve port leakage.

A built-in passage links the sleeve and valve body chambers so powder impurities are flushed into the pipeline, reducing buildup and extending valve life.

A plug with apertures creates a multi-stage tortuous flow path that dissipates pressure and velocity fluctuations to limit cavitation, vibration, and noise.

A split valve body and cover form more uniform coolant channels, cutting pressure gradients and energy loss in molded coolant valves.

A battery-powered magnetic module tracks valve shaft angle without wiring, enabling remote opening checks, tamper detection, and stored readings.

A porous diffuser coupled to a restrictor cuts valve noise and clogging during high pressure drops in dirty service.

A trapezoidal PTFE sealing ring expands under assembly pressure to improve ball valve sealing, resist high pressure, and cut machining cost.

A plug-coded rotary coupling lets a misassembled motorized valve be corrected in place by reversing switching logic without draining the heating circuit.

Relative rotation of valve ports enables continuous emulsion flow control for hydraulic support alignment while reducing impact on mining-face components.

A frustoconical metal support ring keeps the ball valve sealed during fire, overpressure, and seal-ring melt conditions.

Sensors built into the movable valve member detect fluid pressure directly, cutting residual fluid, fittings, weight, and complexity.

Injection-moldable PFA, FEP, or ETFE seals cut machining cost while reducing rotor wear, friction, and cooling-water leakage.

A rotatable shell body and single-piece housing cut leak paths, external plumbing, and pressure drop in multi-plane fluid routing.

A metal support ring keeps the ball valve sealed if the polymer seat fails in a fire, while also absorbing overpressure and lowering actuation torque.

A detachable knob stop and body grooves limit valve rotation to prevent accidental flow shutoff and protect downstream equipment.

A meltable support releases a valve that rapidly shuts the oxygen path while an isolated torsion spring avoids oxidation failure.

A pressure-responsive dual-lip seal lets only one lip contact the closure body at a time, cutting valve friction torque while maintaining sealing.

A 90° rotary valve with an inorganic fiber core resists coke oven heat, stabilizes gas flow, and reduces damper failure downtime.

A guided handle-stem interface spreads load in a water valve, improving pressure, overload, disinfectant, and corrosion resistance.

A non-uniform inner wall gap lets coolant debris move to wider clearances, cutting valve torque, pressure loss, and clogging risk.

An inner lid body partitions the valve interior to limit heat conduction to the ball, enabling compact, lower-cost cryogenic fluid handling.

An inclined recessed flow-limiting core enlarges the passage radius to improve pressure stability and reduce resistance in viscous fluids.

Angled nested shells turn turbulent non-axisymmetric valve outlet flow into axisymmetric flow, cutting noise, vibration, and erosion risk.

Integrated strain, magnetic, and leak sensors help detect valve seat misalignment, stem packing leaks, and pig position before damage occurs.

A low-inertia ball valve uses bearing rings, sealing rings, and stop recesses to improve explosion response and reduce deposits in pipelines.

Multi-level pore channels in the seal increase wall length, maintain valve core contact, and reduce leakage in fluid control assemblies.

Inrush current tracking detects solenoid valve fouling early and triggers voltage correction to prevent blockage without disturbing flow measurement.

Ultrasonic level sensing and beacon-based authorization help waste oil tanks prevent theft while enabling efficient scheduled collection.

A shaped sealing member simplifies ball valve installation and manufacturing while maintaining stable pressing contact and valve port sealing.

A tortuous multi-stage flow path dissipates pressure gradually to curb cavitation, vibration, and noise while maintaining precise fluid control.

A three-part valve seal uses an elastic spacer with concave-convex geometry to handle thermal expansion, length tolerances, and friction.

Direct valve-body position sensing enables intermediate flow control and detects actuator drive train failures that electrical monitoring misses.

An annular seal separates valve flow paths in the blocked state to stop leakage while preserving quick rotary switching and seal life.

A modified three-way ball valve mixes two gases with servomotor positioning, avoiding complex sensors and enabling precise emergency oxygen blending.

Integrated leachate drainage, tamping, and measuring storage make kitchen composting cleaner, more compact, and easier to use.

Direct valve-body sensing compares commanded and actual rotation to detect drive train faults and control intermediate flow positions.

A removable stator plate enables leak-tight high-pressure fluid connections while reducing sample contamination and maintenance time in liquid chromatography.