Samson 3372, User Manual

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6
T 8313 EN
Mounting types
There are two types of mounting depending on the valve/actuator combination: mounting using a crossbeam or mounting on rods.
When the actuator is mounted to the valve using a crossbeam (Form B, Fig. 8), the actuator is fastened to the valve bonnet using a
central nut.
When the actuator is mounted on rods (Form C, Fig. 9) the actuator is connected to the valve bonnet using rods. In this case, a
crossbeam is not required for mounting the actuator.
Table 2: Mounting types (see Fig. 8 and Fig. 9)
Version Integrated i/p
converter
Type 3725 Positioner (direct attachment)
Actuator area 120 cm² 120 cm² 350 cm²
Travel 15 mm 15 mm 15 mm 30 mm
Type ... Valve Nominal size DN
3321 15 to 50 Form B Form B –
–
3321 65 to 100 – Form C Form C –
3321 100 – – – Form C
3323 15 to 50 Form B Form B – –
3323 65 to 80 – Form C Form C –
3323 100 – – – Form C
3531 15 to 80 Form B Form B –
–
3535 15 to 80 Form B Form B –
–
3214 65 to 100 Form B Form B –
–
3214 125 to 250 – – – On request
3260 65 to 80 Form B Form B –
–
3260 100 to 150 – – – On request
Fig. 8: Form B: mounting using crossbeam Fig. 9: Form C: mounting on rods