L.S.
Nipple Shields & Adapters are usually sold together
Yellow Valves & the little white flaps on the valves
Tubing
I got my replacement parts on Amazon.com.
My hospital also provided parts to use with their Medela Symphony pump while in the hospital. It was compatible with the pump in style. It's nice to have 2 sets of nipple shields, adapters & valves, so if one set is ready to wash, you have a set that's clean & ready to go.