Automatic booster pump,circulating pump With long life, low noise, no leakage, enviroment protection, passed CE, ISO9000. Application:1.For clean liquids, without abrasives, which are non-aggressive fro the pump materials.2.For heating plants.3.For circulating plants.Operating conditions:1. Circulating pumps for heating plants and circulation.2.For clean liquids without abrasives,non-aggressive ...