A - FOAM COLLECTION CUP
B - INTERNAL-LEVEL CONTROL CHECK VALVE
C - EMPTYING/BOTTOM CLEANING CHECK VALVE
D - ENDCAP
E - AIR PRODUCTION PUMPS
F - VENTURI DEVICE
G - AIR TUBINGS
H - FOAM DISCHARGE
L - INTERNAL LEVEL
M - SAFETY AIR DISCHARGE
N - WATER INLET
O - O-RING
P - EXTERNAL DISCHARGE TUBE (2 parts)
Q - REMOVEABLE SKIMMING TUBES
R - EXTERNAL DISCHARGE TUBE's SEATS

*with reserve of technical improvements