VALVE ROTATOR

　　Valve rotator upgrades spring retainer function,

　　1. Force valve around its own axis rotating, make valve and valve seat or valve guide grit each other and fray evenly while opening and closing, help remove carbon deposits, and prevent air leakage or snapped.

　　2. Valve heated and cooled evenly to decrease thermal stress and prevent valve tray from being contorted or warped;

　　3. Valve service life will be prolonged a lot, so as to improve the engine reliability.

　　Structure type: Garter-spring type, steel-ball type

　　Dimension scope: Ф27mm-Ф150mm

　　Cylinder Dia.: Ф60-Ф430mm