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.
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