Richter KSEA/F Series Safety Valves - Manual (Page 10)

Series KSEA/F
Page 10
9530-052-en Revision 03
TM 7128 Edition 05/2008
6.6 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.
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.
Otherwise grounding must be ensured by different
measures e.g. a cable link.
6.7 Installation
The plant components to be protected are to be
cleaned thoroughly prior to installation of the valve.
Solids jeopardise the soft-sealing, high-precision
surfaces of the seat and plug and permanent leaks
could arise.
The safety valve must be installed so that no
inadmissible mechanical or thermal stresses are
transmitted from the attached pipes to the body.
Changes in length of the pipes due to temperature
are to be allowed for, e.g. through the installation
of expansion joints.
Remove the flange covers.
Before installation (vales with set pressures
7,25 psi / 0.5 bar), remove metallic transport
securing strip and cap nut for securing the valve
during transport. Screw on attached lead-sealed
cap nut 927/1. See Section 5.1.
Remove the securing wire between the bonnet 513
and the lifting lever 238.
Position and align the safety valve and any
additional gaskets. Then tighten the pipe screws
with a torque wrench in diametrically opposite
sequence.
For tightening torques, see Section 1.2.
6.8 Blocking screw (option)
During the pressure test of the plant the
safety valve cannot discharge through the
blocking screw.
This blocking screw may only be used for this
purpose. Always remove again immediately.
Damage to the valve could occur and pressure
protection is then no longer provided.
The lead-sealed cap nut 927/1 is replaced during
the pressure test of the plant by a cap nut 927/1B
with an additional tapped bore for the blocking
screw 901/4.
In the KSEA/F 4"/6" the lead-sealed hex. screw
901/3 is replaced by a threaded rod 918/1 with a
prevailing torque type hex. nut 929/2.
The cap nut/blocking screw or the
threaded rod/hex. nut are supplied separately.
See also the details in Fig. 6.
After the pressure test remove the cap
nut 927/1B with the blocking screw 901/4
or threaded rod 918/1 with the hex. nut
929/2 again.
Screw in the cap nut 927/1 or, in the case of the
KSEA/F 4"/6", the hex. screw 901/4 with the bore
for the lead seal again and have them lead-sealed
again. See also Fig. 6.
DN 4"/6" DN 3"/4"
Fig. 6
Legend see Section 10.1.
6.9 Signal transmitter (Option)
On request, an signal transmitter is available for
remote monitoring.
Glue in stem extension 805 (e.g. Loctite 638) and
secure with a hex. nut 920/4.
The support, lower part, 542 is screwed on instead
of the cap nut 927/1.
Insert the O-ring 400/3.
Mount support, upper part, 541.
Screw in signal transmitter 859; after adjustment,
counter with hex. nut.
Secure support, upper part, with setscrew 904/1.
Design with blocking screw:
Insert the O-ring 400/2, screw in hex. screw 901/4
and lead-seal. See Fig. 9.
DN 1”/2”, 2”/3”, 3"/4"
Fig. 7