Brass ball valve (polymer ball core) uses a brass valve body with a high-strength polymer ball core to reduce the impact of metal on water quality and improve corrosion resistance. The polymer ball core has good chemical resistance and low friction properties, making the valve operation smoother and extending the service life. This type of ball valve is suitable for water supply systems, HVAC equipment and chemical fluid control. China faucet factories can provide customized services with different sizes and interface standards according to customer needs.