Richter PA/S Series Sampling Valves - Manual (Page 9)

Series PA/F, PA/S
Page 9
9510-060-en Revision 02
TM 7165 Edition 06/2008
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,
especially hard foreign matter.
During installation, pay attention to the correct
tightening torque, aligned pipes and tension-free
assembly.
It must be ensured that the lever swings freely
(dead man'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 are glass-lined, PTFE-lined gaskets
with a metal inlay should be used. These gaskets are
available as special 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
(deviations from this position require a special bottle
connection). See Section 10.4 and 10.9.
6.3 Grounding
The valve must be grounded. The simplest solution is
to use tooth lock washers which are placed under one
pipe bolt of each flange.
Otherwise grounding must be ensured by different
measures e.g. a cable link.
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.
6.4 Test pressure
The test pressure PT of an open valve must not
exceed the value of 1.5 x PS(PN) as per the
identification of the valve.
6.5 Star knop
The stroke and thus the pressure reduction and
medium 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
intensity you want.
Release lever and lock the star knob in this
position.
This procedure guarantees that with each further
sampling 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).