Burkert Type 8712 - Manual (Page 10)

10
Descriptionofthesystem
Type 8006, 8702
5.3.2. mfc solenoid control valve
The solenoid valve used for an MFC is a direct-acting, normally closed
solenoid control valve.
The orifice size of the solenoid valve is determined by the required
nominal flow-rate Q
nom
, the pressure and temperature conditions in
the process and the density of the operating fluid.
If the device is operated within the specified pressure range,
the solenoid valve also takes over the sealing function
together with the control function. Limitation: in the case
of special hard seal materials, the sealing function cannot
be ensured. In this case an additional shut-off valve may
be required.
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