[lbrachfe]

They are ALL the same Dupree valve. The heads on two are changed from the manual plunger to the air actuated, which is the part that came out when you removed the two top screws. you can buy the whole paddle with the rubber around it from Newell or any Bluebird or Airstream outlet. I got them from a Prevost convertor for $14 each and carry 3 spares. I replaced all my paddles last June (They just screw on to the metal rod) and they still funtion perfectly. Don't use any corrosives in your holding tank or they will disintergrate quicker.