Flowserve BA46 - Manual (Page 29)

9
Maintenance
– continued –
. Take heed of the danger note on page 5.
. Cut off power supply to actuator 1 .
3. Undo hexagon screws 7 and remove actuator and coupling 8 .
4. Unscrew the hexagon nut T and detach control lever U with the aid of a pulling device.
5. Undo stuffing box screws A , remove stuffing box gland C , scale plate B , disk springs D and
spring sleeve E .
6. Unscrew nozzle stem R and pull is out of the valve body.
7. Unscrew locking screw P and remove gasket Q .
8. Unscrew sealing plug O and remove gasket N .
9. Use a brass drift punch d = 4.8 mm to force out the internals F to J , Fig. 14
0. Clean and, if required, exchange valve body K and internals.
. Apply glue type “Loctite ® 60” to seat bushing J and put it in place. Insert stage bushing I .
. Align wearing bushing H in such a way that the groove is on the longitudinal axis of the locking
screw P .
3. Screw in the locking screw P together with gasket Q and tighten it with a torque of
5 Nm (DN 5 – 3) or 11 Nm (DN 40, 50) when cold.
4. Align and insert the guide sleeve G in such a way that the groove on the longitudinal axis
is on the locking screw P , Fig. 12.
5. Insert new wiper rings and packing rings F as shown, Fig. 12.
6. Apply lubricant (type WINIX ® 00) to the thread and sealing surface of the nozzle stem.
7. Insert nozzle stem R and screw it into the guide sleeve G by two turns.
8. Insert spring sleeve E and disk springs D in the shown sequence.
9. Put scale plate B and stuffing box gland C in place and tighten stuffing box screws A slightly.
0. Screw out nozzle stem R by half a turn and fasten stuffing box screws A with a torque of
7 Nm (DN 5 – 3) or 11 Nm (DN 40, 50).
. Turn nozzle stem R into the closed position, applying a torque of 7 Nm. Put control lever U in
place and align scale S with the scale plate B such that the diamond-shaped marker “0” is in the
middle of the scale plate.
Changing packing and internals of BAE 46, BAE 47
WINIX ® 00 is a registered trademark of WINIX GmbH, Norderstedt
LOCTITE ® is a registered trademark of HENKEL KgaA, Düsseldorf
Changing packing and internals of BA 46, BA 47
– continued –
5. Insert nozzle stem R and screw it into the guide sleeve G by two turns.
6. Insert spring sleeve
E
and disk springs
D
in the shown sequence.
7. Put scale plate B and stuffing box gland C in place and tighten stuffing box screws A slightly.
8. Screw out nozzle stem R by half a turn and fasten stuffing box screws A with a torque of
7 Nm (DN 5 – 3) or 11 Nm (DN 40, 50).
9. Turn nozzle stem R into the closed position, applying a torque of 7 Nm. Put control lever U in
place and align scale S with the scale plate B such that the diamond-shaped marker “0” is in the
middle of the scale plate.
0. Screw hexagon nut
T onto the threaded part of the nozzle stem R and tighten with a torque of
20 Nm while holding the control lever.
. Screw sealing plug O together with gasket N into the valve body and tighten with a torque of
130 Nm or screw in the sample valve with the gasket according to the instructions given by the
manufacturer.