APOLLO A5010/A5510 PART # 29 :
CUP TOP/LID CASTING FOR Q/R CUP ASSEMBLY. Choose above with or without Air Relief Threads. The Original Casting has only 2 holes and does NOT require an Air Relief Valve. The newer style has a total of 3 threaded holes in the Casting and a separate Air Relief Valve(PART#A5276) may be needed.