Samson EB 8111 EN, Mounting And Operating Instructions

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EB 8111/8112 EN 9-7
Servicing
9.4.1 Replacing the gasket
a) For mounting using cross-
beam and central nut
(form B)
1. Undo the body nuts (14) gradually in a
crisscross pattern.
2. Lift the flange (97), flange bonnet (96)
and plug with plug stem (5) off the body
(1).
3. Remove the gasket (17). Carefully clean
the sealing faces in the valve body (1)
and on the flange bonnet (96).
4. Insert a new gasket (17) into the body.
5.
Place the flange bonnet (96) and the
flange (97) over the studs (13) onto the
body.
6. Press the plug (5) firmly into the seat (4),
while fastening down the flange bonnet
(96) with the body nuts (14). Tighten the
nuts gradually in a crisscross pattern.
Observe tightening torques.
b) For mounting using rods
(form C)
1. Undo the body nuts (14) gradually in a
crisscross pattern.
2. Lift the valve bonnet (2) and plug with
plug stem (5) off the body (1).
3. Remove the gasket (17). Carefully clean
the sealing faces in the valve body (1)
and on the flange bonnet (2).
4. Insert a new gasket (17) into the body.
5. Place the valve bonnet (2) and plug with
plug stem (5) onto the body.
6. Press the plug (5) firmly into the seat (4),
while fastening down the valve bonnet
(2) with the body nuts (14). Tighten the
nuts gradually in a crisscross pattern.
Observe tightening torques.
9.4.2 Replacing the packing
The Type 3321 Valve is either fitted with a
standard or form D packing. The packings
have an identical design, but contain differ-
ent materials.
a) For mounting using cross-
beam and central nut
(form B)
1. Undo the body nuts (14) gradually in a
crisscross pattern.
2. Lift the flange (97), flange bonnet (96)
and plug with plug stem (5) off the body
(1).
3. Unscrew the threaded bushing (8).
4. Pull the plug with plug stem (5) out of the
flange bonnet (96).
5. Pull the entire packing out of the packing
chamber using a suitable tool.
6. Renew damaged parts. Clean the pack -
ing chamber thoroughly.
7. Apply a suitable lubricant to all the pack-
ing parts and to the plug stem (5).
Note