Richter BVAP/F Series Ball Valves (ASME) - Manual (Page 9)

Series BVA/F, BVAP/F ,
ASME Page 9
9520-085-en_USA Revision 10
TM 8361 Edition 10/2011
5 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.
Ensure that a remotely actuated actuator
cannot be accidentally switched on.
5.1 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
available as special accessories in the Richter range.
5.2 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.
Ball/stem unit 201 and stem 202 are grounded using a
grounding spring washer 557.
5.3 Direction of flow and
installation position
Installation is independent of the direction of flow.
Any installation position can be chosen.
Otherwise, it is marked by a direction arrow on the ball
valve, in the case of an additional relief bore in the
ball/stem unit or the ceramic ball.
Fig. 1 Ball Al
2
O
3
in closed position
Fig. 2 Ball/stem unit in closed position
5.4 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.