Series PA/F, PA/S
Page
9
9510-010-en
Revision 18
TM 9549
Edition 11/2018
6
Installation
♦
Examine valve for in-transit damage, damaged ball
valves must not be installed.
♦
Before installation the valve and the connecting pipe
must be carefully cleaned to remove any dirt, espe-
cially hard foreign matter.
♦
During installation, pay attention to the correct tight-
ening torque, aligned pipes and tension-free assem-
bly.
♦
The lever must move freely (deadman's position).
Ensure that a remotely actuated actuator
cannot be accidentally switched on.
6.1 Flange caps and gaskets
Leave protective caps on the flanges until just prior to
installation.
Where there is a particularly high risk of damage to the
plastic sealing surfaces, e.g. if the mating flanges are
made of metal or enamel, PTFE-lined gaskets with a
metal inlay should be used. These gaskets are availa-
ble as accessories in the Richter range.
6.2 Direction of flow and
installation position
Installation is independent of the direction of flow.
The installation position is normally horizontal with the
bottle connection pointing vertically downwards (devia-
tions from this position require a special bottle connec-
tion). See
Section 10.4
and
10.9
.
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.
Upon customer request a set screw M6 is attached to
each flange with a hex nut and washer as an additional
earthing connection.
Otherwise grounding must be ensured by different
measures e.g. a cable link.
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.
6.5 Star knob
The stroke and thus the pressure reduction and me-
dium flow can be influenced with the star knob.
Moreover, the star knob can be used to close the valve
like a manual valve.
It also served to enforce tightness in case of damaged
seat sealing surfaces or seized particles.
6.6 High-viscosity media /
Low operating pressure
With the version "design for high-viscosity media" the
changed operating limits acc. to the name plate must
be observed and the travel must be set according to the
setting instructions in
Section 6.7
.
6.7 Setting instructions
♦
Press the sampling lever in the direction of the
valve.
♦
Slowly turn the star knob counterclockwise until the
flow into the sampling bottle corresponds to the in-
tensity you want.
♦
Release lever and lock the star knob in this position.
This procedure guarantees that with each further sam-
pling process (with the same internal pressure) the flow
of the sample into the bottle remains within the desired
range without any risk to the person taking the sample.
If the operating pressures vary, we recommend you for
safety's sake to turn the star knob after every sampling
operation clockwise again until it reaches zero point
(lever cannot execute any travel).
