Sandwich butterfly valves, whether manually or automatically operated, can be used in most liquid product applications in the food-processing, pharmaceutical and chemical industries. The design allows to easily instal or remove the valve without separating the pipes.

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4900 Butterfly Valve Sandwich

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Operating principle

The butterfly valve can be operated automatically through an actuator or manuallywith a handle.

The handle blocks the valve in the "open" or "closed" position, although there are alsoother models with intermediate positions.The actuator transforms the axial movement of the piston into a 90º rotary movementwhich it transmits to the disc.

Design and features

Design: "between flanges".

Compact and robust design.

Multi-position handle as standard feature for valves up to DN-100/4".

Two-position handle as standard feature for valves starting from DN-100/4".

Low pressure losses.

Bodyhalves interchangeable with any connection type.

Connections: DIN 11850.

Traceability of components.

Materials

Disc and body halves: AISI 316L (forged)

Handle: AISI 304 / PP

Other St.St. parts: AISI 304

Gasket: EPDM according to FDA 177.2600

Internal surface finish: Ra ≤ 0,8 μm

External surface finish: Machined, Ra ≤ 1,2 μm

Options

AISI 304L valve.

Gaskets: NBR, VMQ or FPM.

Two sizes for two-position handle.

Handles: two-position, lever, micrometric, with safety lock, etc.

Electric actuator or single- or double-acting actuator, the size is determined by the operating torque of the valve.

Electro-pneumatic positioner.

Inductive position sensors.

C-TOP control unit (inductive position sensors or microswitches).