pressure in bar
DN 40, 50, 65
Inch 1,5", 2",
2,5", 3"
DN 80, 100
Inch 4"
0,1 1 2 3 4 5
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
12
APV_DA4_UK-1_102018.indd
UK
Double Seat Mix Proof Valve
APV DELTA DA4
Instruction Manual: UK - rev. 1
APV
6. Cleaning
6.5. Flushing quantity in ml per lifting cycle / 5 sec.
6.6. Cleaning of upper area (g. 6.6.)
The upper valve shaft is lifted via connection (2), as shown in g.
4.1 on page 8.
Through the lifting of the upper valve shaft, the cleaning uid ushes
over the upper seat seal and the upper valve seat into the leakage
chamber and cleans this area. The cleaning uid is drained off to
the bottom in a depressurized state.
Simultaneously, the upper shaft seal and the outer surface of the
upper valve shaft are cleaned. The cleaning uid is guided into the
leakage chamber and drained off to the bottom.
The lifting stroke is limited by a metallic stop.
6.7. Cleaning of lower area (g. 6.7.)
The lower valve shaft is lifted via connection (3), as shown in g. 4.1
on page 8.
By lifting the lower valve shaft, the cleaning uid ushes over the
lower seat seal into the leakage chamber and cleans this area. The
cleaning uid is drained off to the bottom in a depressurized state.
Simultaneously, the lower shaft seal and the outer surfaces of the
lower valve shaft are cleaned. The cleaning uid is drained off to the
bottom in a depressurized state.
The lifting stroke is limited by a metallic stop.
fig. 6.6.
fig. 6.7.
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