Series RSS/F
Page
13
9560-010-en
Revision 19
TM 10477
Edition 05/2022
6
Installation
♦
Examine valve for in-transit damage, damaged
control valves must not be installed.
♦
Before installation the valve and the connecting
pipe must be carefully cleaned to remove any dirt,
especially hard foreign matter.
♦
During installation, pay attention to the correct
tightening torque, aligned pipes and tension-free
assembly.
♦
The all-round gap between the body and the cover
must remain constant so that a centric position of
the plug in relation to the seat is guaranteed.
♦
Operation during maintenance work can be
continued with a bypass around the control valve.
Ensure that a remotely actuated actuator
cannot be accidentally switched on.
♦
Depending on the kv-value, the free cross section
in the valve may be much smaller than the cross
section of the nominal size. To prevent clogging,
the pipe must be carefully cleaned upstream of
the valve.
6.1 Flange caps and gaskets
♦
Contamination of or damage to the sealing
surfaces is best avoided if the protective caps
remain on the flanges until just before installation.
If plastic sealing surfaces, e.g. on mating flanges
made of metal or enamel, can be damaged, use
PTFE-lined seals with a metal inlay.
These gaskets are available as special accessories in
the Richter range.
6.2 Direction of flow and installa-
tion position
Normally the valve is installed in a horizontal pipe
with the actuator on top. The valve can also be
installed with the actuator underneath.
However, this is only admissible if there is no risk of
contamination to the bellows, e.g. from the sedimen-
tation of solids.
Inclined positions of the actuator are only admissible
after consultation with the manufacturer. In this case
a support structure may have to be provided for the
actuator.
The direction of flow is from below against the plug.
An arrow on the body indicates the direction of flow.
6.3 Grounding
The valve must be grounded. This can be achieved in
the simplest way via the pipe screws using tooth lock
washers.
One pipe screw per flange is underlaid with toothed
disks.
At the customer's request a setscrew M6 with a hex.
nut and washer will be provided at each flange as an
additional grounding connection.
Otherwise grounding must be ensured by different
measures e.g. a cable link.
6.4 Test pressure
The test pressure PT of an open valve must not
exceed the value of 1.5 x PN/PS as per the
identification of the valve.
6.5 Monitoring connection
If the cover flange has a screw-in fitting for
an alarm connection, the latter must also be
connected or the screw-in fitting has to be
sealed. Otherwise, medium could escape if
the bellows became defective.
In order to ensure leak monitoring, Richter recom-
mends the combination of the safety stuffing box with
a warning connection.
