Richter BVIP/F Series Ball Valves (ISO/DIN) - Manual (Page 11)

Series BVI/F, BVIP/F
Page 11
9520-090-en Revision 10
TM 8361 Edition 10/2011
9 Maintenance
All repair work is to be performed by qualified
personnel using the appropriate tools. Generally
recognized practice in mechanical engineering is
to be observed.
For the arrangement, designation and item
numbers of all parts of the valve, see Section 10.
Spare parts are to be ordered with all the details
in acc. with the valve identification.
Only original spare parts may be installed.
To prevent leaks, a regular check of the connection
screws should be made in line with the operat-
ing requirements.
For torques see Section 1.2.
9.1 Dismantling BVI/F, BVIP/F
with ball/stem unit
9.1.1 BVI/F with lever
Move the ball/stem unit 201 into the closed
position.
Remove lever 203.
Take out grounding spring washer 557.
Dismantle packing gland follower 503 and spring
gland follower 502.
The thrust ring 405/1 and packing insert 423 are
one unit and it is levered out using 2 screwdrivers.
Undo screw connection body end piece 102 /
main body 100.
Remove body end piece 102.
Pull the ball/stem unit 201 partially out, the base
ring 422 is pressed upwards. The ball/stem unit
must be in the closed position.
The base ring 422 can now be pushed further up
using an angled Allen key. Make sure that the
packing chamber is not damaged.
Remvoe base ring 422 from the ball/stem unit 201
and pull the unit out.
Remove seat rings 401.
9.1.2 BVIP/F with actuator
Remove actuator 850 and coupling 804.
Dismantle packing gland follower 503 and spring
gland follower 502.
Remove bracket 510.
Further dismantling is performed as described in
Section 9.1.1.
9.2 Assembly BVI/F, BVIP/F
with ball/stem unit
Prior to assembly all parts are to be cleaned and
the plastic-lined components checked for damage.
Insert seat rings 401 in the main body 101 and
body end piece 102.
Mount ball/stem unit 201 in closed position. Make
sure that the packing chamber is not damaged.
A relief bore in the ball/stem unit must lie on the p1
side in the closed position.
Mount body end piece 102. Tighten the body
screws to a tightening torque according to Section
1.2 in diametrically opposite sequence.
9.2.1 Packing insert
Push the base ring 422 onto the stem into the
packing chamber.
Push the packing insert 423 with the thrust ring
405/1 into the packing chamber.
Press in grounding spring washer 557.
9.2.2 BVI/F with lever
Mount lever stop 577, spring gland follower 502 (at
DN 80, 100 and 150 are 2 spring gland followers)
and packing gland follower 503. Tighten packing
nuts until there is no gap between packing gland
follower and spring gland follower. See Section
1.2 and 10.5
Seal any tapped bores still open with plugs.
Mount lever 203.
9.2.3 BVIP/F with actuator
Mount spring gland follower 502 (DN 80, 100 and
150 are 2 spring gland followers) and packing
gland follower 503. Tighten packing nuts until
there is no gap between packing gland follower
and spring gland follower. See Section 1.2 and
10.6.
Mount bracket 510 with the opening at right angles
to the direction of flow.
Mount coupling 804 and actuator 850. Observe
the actuator position in accordance with the actua-
tor operating manual.
Observe the ball/stem position in accordance with
the position of the actuator.