Válvula de pie de bomba de agua (4 pulgadas) PVC negro válvula de retención plana de baja presión para
Type: 1.5in 2in 2.5in 3in 4in(Optional ). The pump is to ensure that the liquid flows in in the suction line, allowing the pump to work properly. The bottom valve, also known as the check valve, is a low pressure flat valve.