Butterfly valves

3331 - Centric butterfly control valve


The Type 3331 centric control butterfly valve is designed for general service applications up to the limits of the PN40 pressure class rating. These general service applications include process events such as erosion, abrasion, and corrosion. The Type 3331 design increases flow capacity and reduces the pressure recovery factor, making the design more susceptible to cavitation, flashing, and flow noise generation. The centric design of this butterfly valve will increase the breakaway torques required from the actuator.

The Type 3331 control butterfly valve has several standard options such as swing through, step seated, angle seated, or low noise disc design, and temperature extensions. The Type 3331 can be assembled with a pneumatic, electric, hydraulic, or electro-hydraulic actuator also offered by the SAMSON group to complete the construction of the control valve. These control valves are designed according to the modular assembly principle and can be equipped with SAMSON actuators and valve accessories.

  • Nominal diameters: DN100 to DN400 (4" to 16")
  • Pressure classes: PN10 to PN40 (Class 150 to 300)
  • Materials: Cast Steel, Stainless Steel
  • Temperature range: -10 to +400°C (+14 to +752 °F)

Manufactorer: SAMSON

Related documents
Datasheet - DINT8227EN
Mounting and operating instructionsEB8227EN
Drawings - DIN