American standard valve is the meaning of the United States standard, usually called American Standard Ball Valve, American Standard valve and other valves are manufactured in accordance with the United States one of the categories of valves. The standard compilation is a very important document. It sets out the standard compilation process, the description and resolution of major technical issues and other information. Although the standard presentation is only one document used in the standard filing process. However, it is helpful to take a look at the standard instructions and the issues that need attention in understanding and implementing the standard. The standard presentation does have a great effect on the overall understanding of the standard, as well as a series of evolutions, with a continuous process of documentation. Understand the other American standard valve is easy to understand, the national standard valve is our standard valve, German standard valve is the German standard, the Japanese valve is the Japanese standard, and so on. American standard valve is the meaning of the United States standard, usually called American Standard Ball Valve, American Standard valve and other valves are manufactured in accordance with the United States one of the categories of valves. The standard compilation is a very important document. It sets out the standard compilation process, the description and resolution of major technical issues and other information. Although the standard presentation is only one document used in the standard filing process. However, it is helpful to take a look at the standard instructions and the issues that need attention in understanding and implementing the standard. The standard presentation does have a great effect on the overall understanding of the standard, as well as a series of evolutions, with a continuous process of documentation. Understand the other American standard valve is easy to understand, the national standard valve is our standard valve, German standard valve is the German standard, the Japanese valve is the Japanese standard, and so on.