Check Valve Showing 21–22 of 22 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low 1-1/2″ MNPT x 1-1/4″ Barb or 1-1/2″ ABS Slip Sump Check Valve $2.99 Add to cart 1-1/2″ MNPT x 1-1/2″ Barb Sump Check Valve $3.47 Add to cart 1 2