What is the definition of a Numatic valve? A Numatic valve is a type of valve that is designed to regulate the flow of gases and liquids, much like a faucet regulates the flow of water. The valve contains a plunger that moves up and down to regulate the flow of the material, and it is usually operated using air pressure. This type of valve is commonly used in industrial and commercial applications to regulate the flow of various liquids and gases, such as steam, water, oil, and gases such as natural gas and propane. The Numatic valve is made up of several different parts, including a diaphragm, a stem, and a valve body. The diaphragm is responsible for controlling the amount of pressure and flow within the valve, while the stem is used to regulate the position of the plunger. The valve body houses the other parts and is the part that connects the valve to the other components of the system. The Numatic valve