Richter PA/S Series Sampling Valves - Manual (Page 10)

Series PA/F, PA/S
Page 10
9510-060-en Revision 02
TM 7165 Edition 06/2008
7 Operation
7.1 Initial commissioning
Normally, the ball valves have been tested
for leaks with air or water. Prior to initial
operation check body bolting. For torques
see Section 1.2.
Unless otherwise agreed, there could be residual
amounts of water in the flow section of the ball valve;
this could result in a possible reaction with the
medium.
To prevent leaks, all connection screws should be
retightened after the initial loading of the valve with
operating pressure and operating temperature.
For torques see Section 1.2.
7.2 Improper operation and their
consequences
Crystallisation may result in damage to the seat
rings or ball/stem unit. This can be prevented by
heating.
In extreme cases a leak may occur.
Increased wear occurs when the valve is operated
with solid contents.
Violent opening or rapid filling may cause the bottle
to burst.
Non-observance of the pressure-temperature
diagram may result in damage.
Do not transport the valve using the lever.
Do not use a lever extension as otherwise there is
a risk of damage.
At the customer's request, the middle hole in the
lever is drilled through. If the lever is then locked
in the lower hole to take samples and if, in addi-
tion, a pin is inserted into the middle hole, it must
be ensured that sampling does not take place
accidentally.
7.3 Sampling (standard)
Screw bottle into the bottle connection 226.
Check travel set on the star knob 963/1.
Lever 203 is in the dead man's position.
For sampling, lock lever in the top groove.
If it is requested that the lever is firmly locked, drill
through the middle hole and insert an additional pin
into the middle hole.
CAUTION! Sampling may also take place acciden-
tally.
Press in direction of valve.
Sampling can take place.
A lock is available from Richter as an option.
A device for the risk-free discharge of the medium
must be connected to the venting connection.
Sealing plugs are inadmissible as overpressure occurs
in the bottle.
7.4 Shutdown
The local regulations are to be observed when
dismantling the valve.
Prior to undoing the flange connection ensure, that the
plant is depressurised and emptied.
Prior to starting any repair work, the valve is
to be thoroughly cleaned. Even if the valve
has been properly emptied and rinsed,
residual medium may still be found in the valve.
After dismantling, immediately protect the valve
flanges against mechanical damage with flange caps.
See also Section 5.1.