Richter BVA/F Series, Инструкция по установке и эксплуатации

Страница: 11 / 30

Series BVA/F, BVAP/F to ASME
Page 11
9520-036-en Revision 19
TM 10477 Edition 05/2022
9 Maintenance
♦
All repair work is to be performed by qualified
personnel using the appropriate tools.
♦
For the arrangement, designation and item
numbers of all parts of the valve, see Section 9 .
♦
Spare parts are to be ordered with all the details
in acc. with the valve identification.
♦
Only use original spare parts.
♦
To prevent leaks, a regular check of the connec-
tion screws should be made in line with the oper-
ating requirements.
♦
For tightening torques, see Section 1.2 .
9.1 Dismantling
9.1.1 BVA/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 101 .
♦
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.
♦
Remove base ring 422 from the ball/stem unit 201
and pull the unit out.
♦
Remove seat rings 401 .
9.1.2 Ball valve with actuator
♦
Mount actuator 850 with coupling 804 .
♦
Dismantle packing gland follower 503 and spring
gland follower 502 .
♦
Remove lantern 510 .
♦
Further dismantling is performed as described in
Section 8.1.1 .
9.2 Assembly BVA/F, BVAP/F
with ball/stem unit
♦
Prior to assembly all parts are to be cleaned and
the plastic-lined parts 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 greased
housing screws cross over with a tightening torque
according to
section 1.2 .
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 BVA/F with lever
♦
Mount lever stop 577 , spring gland follower 502 (at
4" and 6" are 2 spring gland followers) and pack-
ing gland follower
503 . Tighten packing nuts until
there is no gap between packing gland follower
and spring gland follower. See
Sections 1.2, 9.4
and 9.5 .
♦
Seal any tapped bores still open with plugs.
♦
Mount lever 203 .
9.2.3 BVAP/F with actuator
♦
Mount spring gland follower 502 (at 4" and 6" are
2 spring gland followers) and packing gland fol-
lower
503 . Tighten packing nuts until there is no
gap between packing gland follower and spring
gland follower. See
Sections 1.2, 9.6 and 9.8 .
♦
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.