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4.3 Safety valve
The Type 2371-10 and Type 2371-11 Pres-
sure Reducing Valves are shut-off devices that
do not guarantee absolute tight shut-off.
When closed, these regulators can have a
leakage rate (see section 9 on page 26).
As a result, the output pressure p
the same level as the input pressure p
plant which does not have its own consump-
tion.
WARNING
!
The pressure in the entire system must not
exceed the maximum permissible pressure.
Corresponding safety equipment (e.g. safety
valve) must be installed downstream of the
regulator. Ensure that the pressure reducing
valve itself cannot exceed the specified
maximum pressure of 10 bar/150 psi.
The permissible temperature and pressure lim-
its are specified on the regulator.
4.4 Leakage line connection
A leakage line can be connected to the
regulator when toxic or dangerous media are
used. In the event of a defective diaphragm
(e.g. diaphragm rupture), any process
medium that escapes can be fed through a
pipe to a safe location.
Adapt the pipe diameter to the connection at
the regulator.
EB 2640 EN
5
5.1 Start-up
First start up the regulator after mounting all
parts.
Fill the plant slowly with the process medium.
can rise to
Avoid pressure surges. Open the shut-off
2
in a
valves first on the upstream pressure side.
1
Afterwards, open all the valves on the
consumer side (downstream of the regulator).
For optimal control, the required pressure set
point must be within the top end of the setting
range.
5.2 Adjusting the set point
The set point must be adjusted on starting up
the plant running under normal operating
conditions.
The pressure gauge located on the down-
stream (output) pressure side allows the ad-
justed set point to be monitored.
− The set point adjustment in Type 2371-
10 is pneumatic
− The set point of Type 2371-11 is adjust-
ed manually by tensioning the set point
spring.
___
External supply air (e.g. compressed air,
1)
p
Operation
Tip
.
1)
= 8 bar/115 psi) required
max
Operation
11
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