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13. Disassembly of B925 - B925B divert
13. Gradually reduce the press force, matching the stop-
per (18) until the complete unloaded of the secondary
spring (85).
This operation must be carried out with great
care by a specialised person.
15. sujetar with an allen wrench the shaft (11) and
unscrew the spring block. Also remove the seal
ring (12).
17. Unthread the upper piston (66), the spring (31),
the nut (77) and gauge (154) [only DN25--40, 65]
from the central piston (13).
The Company BARDIANI VALVOLE reserves the right to modify its products at any time without prior notice.
18
85
COUNTERHOLD
11
16. Using a press with a plug specially made for the opera-
12
77
66
31
154
13
14. Remove the stopper (18), unthread the shaft (11)
together with piston block (66 and 13) and spring
(31). Also remove the secondary spring (85).
A
tion (A) preload the upper piston (66). Unscrew the nut
(77) using a wrench specially made and mach the piston
(66) until the complete unloaded of the spring (31).
This operation must be carried out with great
care by a specialised person.
18. Remove the seal rings (16 and 19) and the guide
bushing (17) from the stopper (18).
18
66
31
13
11
85
66
77
31
13
19
17
18
16
(GB-IST-B925-0910) 24/35
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