APV DELTA DA3+ SLD, Operating Manual

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8
UK
DELTA DA3SLD-UK0.qxp / 12.2007
Double Seat Mixproof Valve with Seat Lift Detection
DELTA DA3+SLD
Operating Manual: Rev. 0
fig. 5.6
fig. 5.7
5. Cleaning
5.6 Cleaning of upper area (fig. 5.6)
The upper valve shaft is lifted via the connection
(A2)
By lifting of the upper valve shaft, the cleaning liquid flushes over the
upper seat seal and the upper valve seat into the leakage chamber
and cleans this area. The cleaning liquid is drained off to the bottom
in depressurized state.
Simultaneously, the upper shaft seal and the outer surface of the
upper valve shaft are cleaned. Then the cleaning liquid is drained off
at the inner tube of the lower valve shaft to the bottom.
The lifting stroke is limited by a metallic stop.
5.7 Cleaning of the lower area (fig. 5.7)
The lower valve shaft is lifted via the connection
(A1)
By lifting of the lower valve shaft, the cleaning liquid flushes over the
lower seat seal into the leakage chamber and cleans this area. The
cleaning liquid is drained off to the bottom in depressurized state.
Simultaneously, the lower shaft seal and the outer surfaces of
the lower valve shaft are cleaned. The cleaning liquid flushes the
spray connection and is then drained off to the bottom in
depressurized state.
The lifting stroke is limited by a metallic stop.
pressure in bar
5.5 Flushing quantity in ml per lifting cycle / 5 sec.
DN 40, 50, 65
Inch 1,5”, 2”,
2,5”, 3”
DN 80, 100
Inch 4”
DN 125, 150
0,1 1 2 3 4 5
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0