butterfly valves are made from press-forged and solution heat-treated
blanks. The shutters are made from press-forged and solution heat-treated
Aisi 316L stainless steel pieces machined over the entire surface
and ground on the revolving parts. The shutter stems are fitted
with two PTFE bushes to eliminate rotation friction.
Seal rings are compression-pressed from first grade
elastomers. The standard seal material is food-grade silicone. EPDM,
FTM, PTFE-coated FTM, PTFE + silicone are available as options.
All flanges are interchangeable. Butterfly valves
can be actuated either manually or pneumatically. There is a wide
range of manual controls to meet the different system requirements.
Pneumatic controls can be horizontal and vertical, single-, double-effect,
and modulating. They can be fitted with control tops and proximity
contacts, microswitches, solenoid valves, connectors.
Valves are manufactured in the dimensions DN 25
to DN 250 and 1/2" to 10".
The standard finish is 120 grit (Ra 1.01-1.14 µm
The maximum operating pressure is 7 bars; 2 bars
for PTFE seal rings.