Zoeller 105-0001 Sump Pump, 12.50 x 14.50 x 14.50 inches, 19 Pound

Can I vent this with a simple studor vent air admittance valve?

Does this drain line require a ball valve to more closely match the rate of drain vs what the sink can supply so the float cycles less?

Can the black catch basin sit on top of the basement floor?

Pump came, but the small round seal that seals the cord penetration through the lid of the basin was not included. How do I get this part?