JYX-SW series middle and big capacity seawater desalination equipments are suitable for island, station and coastal cities. Effectively remove non-organic salt, heavy metal ions, organic virus and bacteria, revert seawater to life drinking water. Product drinking water quality complies with state life drinking water standard. Pre treatment of this system adopts full automatic multi direction combination valve, realize automatic big flow back wash and wash. The whole new shell of this series of system adopts anti corrosion material on pipelines, ensure the whole system endurable. Main machine of RO system adopts the most advanced RO system software and membranes with good quality ,on the base of equipment capacity ,combine with high efficiency and unique energy reclaim technique, ensure low cost when system operates. Equip with advanced inspect and monitor system, ensure stable operation, output water with good quality (when output water excess watchful valve, the system auto opens discharge valve, lead output water to sewer,) which offer the exact information of system of system operation condition. Advanced flow, pressure controller valve and discharge, drain pipelines are quipped in the whole system so that keep the whole pipe system operates stable, safe, and system safe and reliable. For some small boat seawater desalination, we adopt energy reclaim and pre treatment device considering about availability.