【Safe to Use】The product is manufactured in accordance with strict quality control and quality standards before leaving the factory. It has good safety performance and can be used with confidence. 【Instructions For Use】The pump should ensure that the liquid flows in in the suction line to make the pump work properly. When the pump stops working intermittently, the liquid cannot return to the water source tank, and the suction pipe is filled with liquid to facilitate the start of the pump. 【Good Performance】The bottom valve, also known as the one-way valve, is a low-pressure flat valve. Professional and practical design, with good working performance. 【Quality Service】 We strive to provide you with high quality and convenient service. You are welcome to contact us if you have any problem about our product, we will give you a satisfactory reply. 【Premium Material】The foot valve of the is made of high-quality PVC material, which is and can withstand long-term work in the water.