AutoGRACE® valves are manufactured by leading OEM and OES manufacturers across India that adhere to the highest quality specifications. In general the process involves first manufacturing the blank which is then precisely machined to obtain the fitment and functional tolerances. Lastly, special coatings may be applied to increases resistance to wear, corrosion, fatigue etc.

The blanks are manufactured by upsetting, hot extrusion or friction welding process depending on the type of valve (inlet or exhaust) and its performance requirements. Monometal valves usually suffice for inlet valves and are the most economical alternative. On the exhaust side, due to higher temperatures, a bimetal valve is most appropriate. For especially demanding applications like super heavy duty trucks and earthmovers, processes such as hard facing / Stellite™ coating are used on seat face and valve tip to ensure long service life.

AutoGRACE® engine valves are manufactured on completely robotized lines especially for large production runs by leading manufacturers of engine valves in India. For smaller production runs the valves are sourced from semi-automated manufacturers who follow stringent quality systems like IATF or ISO and can provide the most cost effective solutions at adequate quality levels.

A combination of CNC machines, Special Purpose Machines (SPMs), Upsetters, Material Handling Robots, Centerless Grinders, Automatic Seat Grinders, Forging Lines, Induction Heaters and Surface Coating Plants all available in-house are used to produce these highly precise engine components.