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. Professional: This is a low pressure flat valve which also known as the check valve. The pump is to ensure that the liquid flows in in the suction line, allowing the pump to work properly. When the pump stops working intermittently, the liquid can not be returned to the water source tank, and the suction pipe is filled with liquid to facilitate the start of the pump. Product Introduction: The bottom valve, also known as the check valve, is a low pressure flat valve. 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. Good Operating Performance: This pump foot valve is professionally and practically designed with good operating performance., Weight: 0.220462262 Pounds, Manufacturer: Hyuduo