SUPPLY GIANT TQDW44 Plastic Sump Pump Check Valve with PVC Adapters and Stainless Steel Clamps, 2 in. X 2 in, Black Price: $19.98 (as of 26/09/2023 11:33 PST- Details)

FLAPPER DESIGN: Prevents backflow of water or sewer gas into sump basin
UNIVERSAL: Capable of vertical or horizontal installation
EASY SLIP FIT design makes simple installation