What are the Specifications of Engine Valves?

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Engine Valve Specifications:

Typical engine valves are specified by the parameters outlined below. Note that this data is meant for information purposes and bear in mind that variations within the parameters used for specifying engine valves may exist from manufacturer to manufacturer. By understanding the specifications, buyers are better equipped to have interaction in discussions of their specific needs with suppliers of engine valves.

  1. Stem diameter – the diameter of the engine valve stem
  2. Stem length ­– the gap from the stem tip to the valve head
  3. Seat angle – the angle cut of the valve head’s seat, measured in angular degrees, typical values being within the range of 20o – 60o
  4. Valve materials – describes the fabric or materials used for the valve fabrication
  5. Coatings – identifies any coatings or surface treatments applied to the bottom material of the valve, like chrome plating, nitride, PVD, or ceramics, for instance

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