... dead cavity.The System Components:1. Multi-medium filter(with auto-flushing device): remove grained impurity, Iron and manganese ion, ... stop, RO high-pressure pump protective system.3. The auto-flushing and regeneration running system of pretreatment system are equipped ... the equiptment run 2-6 hours(adjustable), it will auto flush membrane element, to avoid high concentration salts in concentrated ...