Plug Valves TRIZ Cases

A pilot-controlled rolling diaphragm valve holds constant pressure or temperature drop in hydronic HVAC systems despite supply pressure fluctuations.

A resilient multi-port valve seal uses low-friction contact layers to compensate tolerances, simplify assembly, and reduce wear.

An internal heater sleeve places induction heating near ice-prone ball valve surfaces to cut heat loss and protect the heater from damage.

A double piston effect seal uses a resilient ring and polymer rings to maintain bidirectional ball valve sealing at cryogenic temperatures.

A 3D-printed wear-resistant inner core with a cast steel outer shell helps valves resist erosion and corrosion at lower material cost.

Two coaxial impellers and magnetic coupling let separate EV fluid circuits run independently while cutting hoses, leaks, and short-circuit risk.

Discrete dielectric pins isolate the motor drive from a metal ball shaft while maintaining torque transfer in wet, jam-prone valve assemblies.

Integrated pumps, junctions, and direct container interfaces cut setup time, maintain aseptic mixing, and keep dosing accurate during source changes.

An integral elastic pad and sealing member lock to valve body ribs to stop seal movement and maintain reliable sealing during valve core rotation.

An elastic membrane seal uses fluid pressure to keep sensor fittings sealed in viscous media while lowering wear, blockage risk, and switching force.

A cylindrical reinforcement member reduces stress, galling, and wear in a rotary shut-off nozzle, helping prevent long-term material leakage.

A bendable convolution section lets the valve seat move radially and axially to maintain sealing contact, cut leakage, and extend valve life.

An end-cover limiting member constrains ball valve rod rotation to 90 degrees, replacing costly limit pins with a simpler integrated stop.

Auxiliary beads extending from a rotor sealing bead distribute torque peaks, cutting rotational resistance while preserving sealing performance.

A perforated screen and annular valve-body cavities disperse flow-generated sound waves to cut audible valve noise.

Isolated internal flow paths limit heat exchange between hot and cold cooling media, helping battery and PE circuits hold required temperatures.

When a motorized valve blocks ultrasonic signals, pressure and position sensing let the meter estimate flow for continuous control and billing.

Gear teeth on the cartridge and valve shaft combine installation with valve actuation, enabling controlled flow and automatic closure in liquid filters.

A monolithic seal with a force-absorbing outer ring improves multi-way valve sealing while lowering ball friction and actuator torque.

An elastic seal with separate sleeve and ring portions improves multi-way valve sealing while limiting ball friction and actuator torque.

Aligned drainage holes and a flexible washer remove trapped water from valve gaps while blocking debris that can cause freezing damage.

A grooved actuator and cylindrical projection improve high-pressure sealing while keeping a medical plug valve easy to rotate and high in flow rate.

A valve-core and linkage layout enables separate or mixed shower outlets while shortening the water path to cut heat loss and assembly complexity.

A recessed retaining plug and matching extraction tool let servovalve filter screens be replaced without damaging the valve body.

An insert-retained seal prevents gasket shift in small valve cocks, improving fluid-tightness without extreme body-to-cock precision.

An inclined recessed flow-limiting core enlarges the passage radius, cutting resistance and wear when controlling viscous or impurity-laden fluids.

A ball-mounted PRV lets a cryogenic floating ball valve handle bidirectional flow while relieving cavity overpressure to prevent damage.

A rotatable stepped valve changes torque converter fluid openings without part swaps, cutting adjustment time and improving stall speed.

A torsion spring and stem adapter return the valve stem to its closed limit position, reducing leakage from incomplete manual closure.

An elliptical gasket and top-loaded cartridge simplify rotary valve assembly while keeping actuation torque low for battery-operated water meters.

Non-co-planar valve cage passages increase outlet spacing without longer plug travel, improving noise attenuation and cavitation control.

Selective radial sealing lets one rotor switch multiple thermal fluid paths with less leakage, lower torque, and reduced seal wear.

A shape memory alloy membrane creates an expandable sub-cavity that absorbs water freezing expansion and protects fluid handling assemblies.

Tapered valve members and seal bodies improve sealing, cut wear and torque, and simplify maintenance in plural component dispensing valves.

Rotatable rings and bearing elements mechanically load annular seats against the ball, maintaining sealing when fluid pressure alone falls short.

Built-in drain and control channels let alarm valves run direct discharge tests without external piping, cutting setup time and space.

Integral molded seals with a lifting structure cut valve rotation friction, maintain leakproofness, and simplify multi-passage valve assembly.

A barb-fit integrated seal simplifies directional valve assembly, improves sealing, and lowers friction in vehicle coolant flow control.

Fluid mechanics inserts inside a cartridge valve smooth passage geometry to cut swirl, noise, cavitation, and leakage from misalignment.

Dual Hall sensors and direction-aware logic identify a rotary valve’s true position from partial-open or unknown states while preventing over-travel.

Directing purge fluid onto the valve ball uses Coanda flow to clear downstream residue faster while reducing fluid use.

Tubular inserts and radial cartridge openings smooth multiway valve flow to cut swirl, noise, cavitation, and leakage.

Lifting sealing elements during rotation cuts valve friction and torque demand while preserving leakproofness in multi-passage temperature control.

A tapered bottomed groove near the communication hole smooths minimum flow area changes for accurate low-opening flow control and better durability.

A tapered annular clearance slows gas-particle flow before the seal gap, cutting wear and extending dome valve use in higher-pressure conveying.

A deformable intermediate piece between two seals maintains leak-tight fluid valve sealing across temperature shifts and length tolerances while reducing friction.

A polycrystalline diamond surface sliding on a catalyst-containing metal prevents graphitization, lowering friction and wear at high temperature.

A deformable intermediate piece between two seals maintains leak-tight valve sealing across temperature changes while reducing friction and energy use.

Ramped axial lifting lets a tapered rotary valve rotate with uncompressed seals, cutting actuator torque while preserving a strong seal.

A sealed rotary joint between two angled tap parts eases horizontal water meter alignment, reducing leaks, seal wear, and blocked installation.