Copper three or four ways are made of copper, built-in non return valve core, unique sealing design and in non-return

valve core, rubber material selection, make the product adapt to the worse working conditions and more stringent

conditions. Designed for variable frequency constant pressure water supply system of five structure, also will highly

integrated pressure sensors, pressure tank, pressure guage, for more easy installation, system cleaner. Fully

compliance with the Ell and America and other countries high standards and requirements for product safety and

enviromental protection, eliminates the users worry to safety and health, has a unique potential in the domestic

water supply system.