Samson 3251-E - Replacing the Trim; A) Removing the (Clamped-In) Seat and Plug

9-18 EB 8052-E EN
Servicing and conversion
9.4.3 Replacing the trim
Risk of damage to the facing of the seat
and plug due to incorrect servicing.
Î Always replace both the seat and plug.
We recommend using new packing parts
and gaskets on replacing the trim.
a) Removing the (clamped-in)
seat and plug
Standard and HT packing
1. Loosen threaded bushing (8).
2. Undo the body nuts (14) gradually in a
crisscross pattern.
3. Valve versions without anti-rotation x-
ture: ensure that the stem connector nut
(9) is still fastened tight to the plug stem
(5.1).
Valve versions with anti-rotation xture:
ensure that the clamps (301) are still fas-
tened tight to the plug stem (5.1).
4. Lift the valve bonnet (2) including yoke
(60), plug (5) and plug stem (5.1) up-
wards off the body (1) and set it aside.
5. Valve versions without anti-rotation x-
ture: unscrew the stem connector nut (9)
and lock nut (10) from the plug stem
(5.1).
Valve versions with anti-rotation xture:
undo the screws (303) and remove the
clamps (301) of the anti-rotation xture.
Set aside clamps (301), screws (303),
washers (304) and stem (9).
6. Unscrew castellated nut (92) and lift the
yoke (60) off the valve bonnet (2).
7. Unscrew the threaded bushing (8).
8. Pull plug stem (5.1) out of the valve bon-
net (2).
9. Pull the entire packing out of the packing
chamber using a suitable tool.
10. Clean the packing chamber thoroughly.
11. Remove spiral gaskets (17, 126) from the
body (1) and valve bonnet (2).
12. Remove the seat retainer (124) from the
body (1). For versions ≥NPS6, a special
SAMSON tool is available (uAB0100).
13. Remove seat (4) and spiral gasket (127)
from the body (1).
LLF20 packing
1. Undo the body nuts (14) gradually in a
crisscross pattern.
2. Valve versions without anti-rotation x-
ture: ensure that the stem connector nut
(9) is still fastened tight to the plug stem
(5.1).
Valve versions with anti-rotation xture:
ensure that the clamps (301) are still fas-
tened tight to the plug stem (5.1).
3. Lift the valve bonnet (2) including yoke
(60), plug (5) and plug stem (5.1) up-
wards off the body (1) and set it aside.
NOTICE
!
NOTICE
!
Tip