Richter BVIP/F Series Ball Valves (ISO/DIN) - Manual (Page 12)

Series BVI/F, BVIP/F
Page 12
9520-090-en Revision 10
TM 8361 Edition 10/2011
9.3 Dismantling BVI/F with ball
and stem
It is possible with a BVI/F, BVIP/F with ball and stem
to replace the seat rings and ball without dismantling
the entire ball valve.
It is equally possible to remove the packing gland
follower, spring gland follower and packing insert
without dismantling the body.
The entire ball valve must merely be taken apart to
remove the stem.
For sectional drawings, see Section 9.
9.3.1 Partial assembly ball and seat
rings
Move ball 200 into the 'closed' position.
Relieve the packing gland follower 503 by
undoiing the hex. nuts 920/2.
Undo body nuts and bolts.
Remove body end piece 102.
Remove ball 200 from the main body 101 by
swivelling it.
Remove seat rings 401 from the main body 101
and body end piece 102 and replace.
9.3.2 Packing insert and stem
Move ball 200 into the 'closed' position.
Remove lever 203.
Dismantle packing gland follower 503 and spring
gland follower 502.
Remove grounding spring washer 557.
Undo body nuts and bolts.
Remove body end piece 102.
The thrust ring 405/1 and packing insert 423 are
one unit and it is levered out using 2 screwdrivers.
Undo housing screws. Remvoe ball 200 by
swivelling it out of the main body 101.
Press the stem 202 downwards into thge body
and remove base ring 422.
9.3.3 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 9.3.1.
9.4 Assembly with ball and stem
Prior to assembly all parts are to be cleaned and
the plastic-lined components checked for damage.
An entire assembly procedure is described.
Insert seat rings 401 into the main body 101 and
body end piece 102.
Insert stem 202 from inside into the main body
101.
Move stem 202 into the 'closed' position.
Swivel ball 200 into the stem 202.
A relief or drain bore must lie on the p1 side in the
closed position.. See also Section 6.2.
Mount body end piece 102. Tighten the greased
body screw to a tightening torque in accordance
with Section 1.2 in diametrically opposite se-
quence.
9.4.1 Packing insert
Put base ring 422 onto the stem.
Push the packing insert 423 with the thrust ring
405/1 into the packing chamber.
Press in grounding spring washer 557.
9.4.2 BVI/F with lever
Mount lever stop 577, spring gland follower 502 (at
DN 80, 100 and 150 are 2 spring gland followers
502) and packing gland follower 503. Tighten
packing gland follower until there is no gap be-
tween it and the spring gland follower. See
Sections 1.2 and 10.5.
Seal any tapped bores still open with plugs.
Attach lever 203.
9.4.3 BVIP/F with actuator
Mount spring gland follower 502 (at DN 80, 100
and 150 are 2 spring gland followers 502) and
packing gland follower 503. Tighten packing gland
follower until there is no gap between it and the
spring gland follower. See Sections 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.