Samson 3321 - For Mounting on Rods (Form C)

EB 8111/8112 EN 39
Servicing
7.1.2 For mounting on rods
(FormC)
1. Undo the body nuts (14) gradually in a
criss-cross pattern.
2. Lift the valve bonnet(2) 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 (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) rmly into the seat (4),
while fastening down the valve bonnet
(2) with the body nuts (14). Tighten the
nuts gradually in a criss-cross pattern.
Observe tightening torques.
7. Mount actuator. See associated actuator
documentation.
2
8
A33
4
1
A54
5
15
17
14
1 Body
2 Valve bonnet
4 Seat
5 Plug (with plug stem)
8 Threaded bushing
(packing nut)
13 Stud bolt
14 Body nut
15 Packing
17 Body gasket
A33 Rod
A54 Nut
Fig.10: Type3321 Valve, DN65 to 100/NPS2½ to 4; FormC attachment (mounting using rods)