Series KA-N/F, KAP-N/F
Page
9
9520-017-en
Revision 15
TM 10477
Edition 05/2022
6
Installation
♦
Examine valve for in-transit damage, damaged
valves do not install.
♦
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.
Ensure that a remotely actuated actuator
cannot be accidentally switched on.
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
Installation is independent of the direction of flow.
Any fitting position can be chosen.
For balls with relief bore or cavity reduced balls this is
marked with a directional arrow on the ball valve.
See
Fig. 1.
Fig. 1
For cavity-free ball/stem unit or ball/stem unit with
relief bore, this is indicated by a directional arrow on
the ball valve.
See
Fig. 2.
Fig. 2
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.
Otherwise grounding must be ensured by different
measures e.g. a cable link.
The ball/stem unit
201
or stem
202
are grounded
using a grounding spring washer
557
.
6.4 Test pressure
The test pressure PT of a valve must not exceed the
value of 1.5 x PS(PN) as per the identification of the
valve.
