11
APV_DE3_UK-7_082017.indd
UK
Double Seat Valve
DELTA DE3
Instruction manual: UK - rev. 7
APV
9. Technical Data
9.1.
General data
max. line pressure:
10bar
max. operating temperature:
135
°
C EPDM, HNBR
*FPM
short-term load:
140°C EPDM, HNBR
*FPM,
*(no
steam)
tightening torque of stop screw
at upper valve shaft:
25Nm
tightening torque of safety nut
at upper and lower valve shaft:
40Nm
leakage gap between
upper and lower valve shaft:
about 4mm
Fig. 9.
(check after stop screw having been screwed in)
cleaning connection
B1
(for hose)
DN 40 - 100, 1,5” - 4” :
8x1 mm
DN125 - 150, 6" :
10x1 mm
air connection (for hose):
6x1mm
max. pneumatic air pressure:
10bar
min. pneumatic air pressure:
6bar
Use dry and clean pneumatic air only.
9.2.
Compressed air quality
- Compressed air quality: Quality class acc. to DIN ISO 8573-1
- content of solid particles: quality class 3,
max. number of particles per m³
10000 of 0,5μm < d ≤ 1,0μm
500 of 1,0μm < d ≤ 5,0μm
- content of water:
quality class 3,
max. dew point temperature -20°C
For installations at lower temperatures
or at higher altitudes, additional
measures must be considered to reduce
the pressure dew point accordingly.
- content of oil:
quality class 1,
max. 0,01mg/m³
The oil applied must be compatible with Polyurethane elastomer
materials.
upper valve shaft
lower valve shaft
leakage gap about 4mm
fig. 9.