Why Are These Important?

Valves, springs and bases are important to assess collectively. Many factors come into play when deciding on which of these to suit your chosen application. Valve material will effect the valves ability to resist corrosion and oxidation, its mechanical strength, thermal fatigue resistance at prolonged high temperatures and its ability to resist thermal creep deformation. Combined with valve spring choose, effecting the valves installed height and closure pressure, to ensure the valve seals against its seat and under a vacuum. Then valve spring base material, being correctly sized to ensure correct install height, then wear resistance and material reaction chemistry.