Flowserve Argus Ball Valves - Manual (Page 19)

Argus
Maintenance
19
Type MW/22
MW22-02-001
Danger!
Do not disassemble the valve under pressure. Before disassembly operate valve so that possible
pressure behind the ball may escape.
Disassembly
f Unscrew the connection pieces (13) with O-rings (33), annular pistons (34) and Belleville washers (11)
from body (1).
f Remove snap ring (22) and stop cap (3).
f Bend the safety plate (5) open and unscrew the screwed socket (4) together with wiper ring (12).
f Remove the safety plate (5).
f Undo the hexagon screws (8) with spring washers (9) and lift off the lid (2) with O-ring (31).
f Remove compression spring (10), pressure disk (7), O-ring (32) and bushing (6).
f Take the plug shaft (21) out of body (1).
Depending on the actual requirements, a partial disassembly of the ball valve might be sufficient.
Reassembly
f To reassemble, proceed in reverse order.
f When reassembling the connection piece (13), be sure to turn it approximately 1/4 of a revolution back
after retightening.