Burkert 3320 Manuel D'utilisation page 11

Type 3320, 3321
Technical data
WARNING!
Reduced sealing function if operating pressure too high.
Because the valve seat is closed against the medium flow,
an excessive operating pressure may cause the valve seat to
not close tightly.
▶ The operating pressure must not exceed the maximum value
specified on the type label.
Maximum permitted operating pressure: see type label
Media: N eutral gases and steam.
Liquid media: Water, alcohol, oil, fuel,
hydraulic fluid, salt solution, caustic
soda, organic solvent.
Degree of protection: ( verified by Bürkert/not evaluated by UL)
IP65 in accordance with IEC 529,
EN 60529, (IP67 on demand).
NEMA 250 4x (not guaranteed if
installation position: actuator facing
downwards).
Flow direction: i ndicated on the type label with an arrow
and the digits 1 and 2. The 1 and 2 are
also on then valve body for identifi-
cation.
The flow direction is below the seat
with flow direction from connection
2 to connection 1.
Altitude up to 2,000 m above sea level
6.5.1 Permitted temperature ranges
Minimum temperatures
Environment: -25 °C
Medium: -10 °C (-40 °C on request)
Maximum temperatures
Environment: d epends on the medium temperature, see
subsequent temperature diagram.
Medium: d epends on the ambient temperature, see
subsequent temperature diagram.
For devices with PTFE valve seat seal
max. +130 °C.
For devices with PEEK valve seat seal
max. +230 °C.
Temperature diagram
The maximum permitted temperature for the environment and
medium are dependent on one another. The permitted maximum
temperatures of the device variants can be determined using the
characteristics of the temperature diagram.
The values are calculated under the following maximum operating
conditions: DN DN32 at 100% duty cycle with 16 bar operating
pressure.
Individual reviews may be performed under different operating
conditions. For this, please contact your Bürkert branch office.
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