Recently, the Sichuan Germany launched a Grand ville pump distributor company WILO-TWS stainless steel submersible deep well pumps, TWS series stainless steel submersible deep well pump with compact structure, excellent performance, high efficiency and energy saving, small size, light weight, smooth running, easy installation and so on. Elastic spherical check valve in the pump, preventing downtime impact upstream and pipeline water hammer of pump function. Can be installed vertically or horizontally.