Samson 2371-10 Mounting And Operating Instructions page 23

section) to get access to the plug stem (19)
and diaphragms (4.1).
How to proceed
1. Undo and remove the four screws (16,
width across flats 13). Keep in a safe
place for later.
2. Use an Allen key (6 mm) to unthread the
stopper (15.2). Unscrew the stop screw
(15). Make sure that the inserted washer
(15.1) does not get lost. Keep in a safe
place for later.
3. The grub screw with trunnion (12.1) acts
as a locking pin and prevents the cover
(1.1) and plug stem (19) from being
pulled off separately. Turn the grub screw
to the point where it is still held in place
by the thread.
1.1
21
1
Fig. 13: Replacing the two diaphragms in Type 2173-10
EB 2640 EN
Note:

The plug stem is guided by ball bear-
ings in the cover (valve bonnet). On
pulling off the cover, the ball bear-
ings embedded in food grade lubri-
cant are exposed and might fall out.
4. Carefully pull off the cover.
5. Undo the grub screw (12.1). Dismantle
the plug stem (19) and plug support (18)
that are bolted together.
6. Remove the diaphragms (21) along with
the internal and external spacing rings
(20).
7. After replacing the diaphragms: Assem-
ble in the reverse order. Tighten the four
screws (16) with a tightening torque of
30 Nm.
15.2
1 Valve body
15
1.1 Cover
15.1
4.1 Two diaphragms
12.1
19 12.1 Grub screw with trunnion
16
15 Mechanical stop (screw)
15.1 Retaining washer
15.2 Stopper
4.1
16 Screws (4 pcs./width across flats
SW 13)
18 Plug support
19 Plug stem
20 Spacing rings
20
21 Ball bearings
18
Cleaning and maintenance
23