Flowserve PA46 - Manual (Page 27)

7
Key
5
Hexagonhead bolt M8 with hexagon nut M8
6
Upper part of the diaphragm actuator
7
Control membrane
8
Lower part of the diaphragm actuator with connector socket
9
Guide pin with plate
GESTRA intermittent valves PA 46 and PA 47 can be retrofitted with a GESTRA diaphragm actuator
(MPA 46, MPA 47).
Retrofitting
Risk of severe burns and scalds to the whole body!
Before carrying out any retrofitting work on the valve or loosening flanged connections,
stuffing box unions or sealing plugs make sure that all connected lines are depressurized
(zero bar) and cooled down to room temperature (0 °C).
Insert the hand lever for emergency operation
2 only to operate the valve and remove it
immediately after operation.
Danger
Mounting diaphragm actuator
. Undo centering screw U. Fig. 3
. Undo retaining piece
3 for forkhead T and pull out hand lever 1.
Note that the hand lever must not be mounted again!
3. Snap retaining piece 3 on forkhead T.
4. Unscrew hexagonhead cap screws W and remove locking lever A.
5. Insert hexagonhead cap screws W and tighten them with a torque of 20 Nm.
6. Put spacer disk X onto pressure plate V.
7. Apply heatresistant lubricant to the connector socket of the diaphragm actuator
(use e.g. WINIX ® 50).
8. Screw on diaphragm actuator Y with a torque of 120 Nm.
9. Attach pressure line ( 3 /
8
") for the control fluid of the diaphragm actuator.
0. Operate the valve once.