Stones are one of the few manufacturers of nozzles that manufacture all components in their own factory. Thus, full control over quality and reliability is ensured, the stones always become the first choice. Each stone nozzle is checked before leaving the factory for performance, spray angle and spray characteristics, so that our customers are guaranteed to receive the quality, performance and life they are used to from stones. Steinens Dyna-Coin is a registered trademark of the William Stein Manufacturing Company. Using the Dyna Coin process, the highest quality, perfect surface between the dosing valve and the nozzle body is achieved. This high-quality finish guarantees the best atomisation and environmentally friendly operation of any type of heat generator, whether in private homes, commercial applications or in industry.