Samson 3321 - Replacing the Gasket

38 EB 8111/8112 EN
Servicing
7.1 Replacing the gasket
7.1.1 For mounting using
crossbeam and central
nut (FormB)
1. Undo the body nuts (14) gradually in a
criss-cross pattern.
2. Lift the ange (97), ange bonnet (96),
and plug with plug stem (5) off the body
(1).
3. Remove the at gasket (17). Carefully
clean the sealing faces in the valve body
(1) and on the ange bonnet (96).
4. Insert a new gasket (17) into the body.
5. Place the ange bonnet (96) and the
ange (97) over the studs (13) onto the
body.
6. Press the plug (5) rmly into the seat (4),
while fastening down the ange bonnet
(96) with the body nuts (14). Tighten the
nuts gradually in a criss-cross pattern.
Observe tightening torques.
7. Mount actuator. See associated actuator
documentation.
1 Body
4 Seat
5 Plug (with plug stem)
8 Threaded bushing
(packing nut)
13 Stud bolt
14 Body nut
15 Packing
17 Body gasket
96 Flange bonnet
97 Flange
98 Central nut
A11 Rod
A17 Bracket
A25 Nut
A11
8
4
1
15
14
17
5
98
97
96
13
A17
A25
Fig.9: Type3321 Valve, DN15 to 50/NPS½ to 2; Form B attachment (mounting using a central
nut)