Valve Spool Assembly
Stroke, pressure difference, fitting clearance, sealing proximity, and number of opening/closing cycles determine movement resistance, wear, and dimensional stability.
Material selection for water-control components
Water Control
Injection molded components for valves, bathroom fixtures, pumps, and water control systems, focusing on evaluating smooth movement and assembly stability.
Water Control
Injection molded components for valves, bathroom fixtures, pumps, and water control systems, focusing on evaluating smooth movement and assembly stability.
- Medium and temperatureWater, mixed media, or additive types, working and peak temperature
- Pressure and cyclesWorking pressure, pressure difference, opening/closing or rotation method, cycle count, and load
- Movement and sealingValve core and valve cylinder fit, sealing positions, clearances, friction, and leakage phenomena
- Size and assemblyKey dimensions, shrinkage, warpage, threads or press-fit structures, and mold stage
Typical components
Water Control — Part priorities
Valve Internals & Actuation
Valve Cartridge
Bore dimensions, roundness, assembly method, sealing surface relationship, and temperature changes determine valve core movement and leakage risk.
Valve Internal Parts
Complex flow paths, thin walls, mating surfaces, and repetitive movements determine molding accuracy, warpage, and assembly consistency requirements.
Valve functional components
Actuation method, sliding structure, medium, water temperature, and load determine friction, wear, and long-term dimensional stability requirements.
Thermostatic valve body
Thermal cycles, stroke execution, assembly tolerances, and sealing position determine the stability of motion and fit under temperature changes.
Rolling Guidance
Guide Wheel
Axle material, radial load, speed, medium, and clearance determine rolling resistance, wear, and roundness retention.
Valve Housing
Valve housing components
Wall thickness, pressure, threaded or press-fit structure, shrinkage, and warping determine the rigidity of the shell and the sealing assembly position.
Pumping
Pump impeller
Speed, medium, blade geometry, shaft fit, and balance requirements determine rigidity, dimensions, and rotational stability.
Material options
Narrow the material range according to water conditions
The following directions are used to establish preliminary candidates and do not represent universal applicability for all water media and pressure conditions. Specific grades still need to be confirmed based on the medium, temperature, sealing, dimensions, and prototype results.
Low-friction POM
Enter candidates when sliding or rotating water components have startup resistance, stick-slip, noise, or execution stability as main issues.
Wear-resistant POM
Valves, guide wheels, or impeller support interfaces are considered candidates when repetitive movement wear and clearance maintenance are the main issues.
Glass fiber reinforced POM
Housings, supports, or impeller components are considered candidates when load deformation, shrinkage, and assembly positioning need to be controlled, and the effects of fiber orientation are evaluated.
Next step
Start with known water-circuit conditions
Share the medium, water temperature, pressure, opening or rotary motion, cycle count, seal position, key dimensions and current leakage or wear. We can then organize the candidate range, open conditions, and grade-document or sample arrangements.