Machine Part: Copper Pressure Valve Controller - Constructed from premium copper, this pressure valve controller offers superior durability and efficient performance, ideal for controlling steam pressure in boilers and other machinery. High-concerned chemical: None - This pressure switch accessory is free from high-concern chemicals, ensuring a safe and environmentally friendly option for regulating pressure in your kitchen appliances and steam equipment. : Electrical - Perfect for the hands-on individual, this versatile pressure switch accessory is designed for easy integration into various electrical projects, enhancing functionality and reliability. Kitchen Accessory: Versatile Pressure Switch Accessory - Enhance your kitchen's capabilities with this versatile pressure switch, designed to maintain optimal pressure levels for a variety of cooking and cleaning appliances.