The pump bottom valve is made of high quality PVC material, which can withstand long working in water, corrosion resistance and long service life. The pump bottom valve should ensure that liquid flows in one direction in the suction line for the pump to function properly. When the pump bottom valve is intermittently stopped, the liquid cannot be returned to the water source tank, and the suction pipe is filled with liquid to facilitate the start of the pump. The pump bottom valve has good sealing performance, and the stainless steel screw makes the product more tight and firm, the seal is reliable, and it is not easy to be washed by the medium. The pump bottom valve is light in weight, strong in corrosion resistance, easy to install, not easily deformed, and compact in structure., Manufacturer: FTVOGUE