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CS-M21 Series

Butterfly valve for gases

Diameter range DN150 ÷ DN3000

Max temperature 600 °C

• Diameter range DN150 ÷ DN3000

• Interception or modulating service.

• Designed for 200 mm insulation

• CE marking

Operating conditions

Design temperature –40°C ÷ 600°C
• Design pressure –0,1 barg ÷ +0,5 barg

Applicable standards

Design EN 593, EN 12516, ASME B16.34
• Flanges EN 1092-1, ASME B16.5, other on request
• Testing EN12266, ANSI/FCI70-2

Ends connections

Bolted flanges
Wafer
• Butt welded

Blade seals options

No seal – Geometric tightness 96%
Metal to metal – FCI 70-2 max tightness class II
Harmonic steel lamellas – FCI 70-2 max tightness class III
• Soft sealing – FCI 70-2 max tightness class III/IV

Valve actuation

Top flange connections: EN ISO 5210, EN ISO 5211

Actuator types:
• Manual with lever or handwheel
• EN 15714-2 Electric actuators
• EN 15714-3 Pneumatic actuators

Shaft seals options

• Graphite braid packing
• Braid packing with lantern ring
• Seal air cleaning system on shaft

Materials

• CORTEN A
• EN 10028-2 steels for high temp.
• Ferritic, austenitic stailness steels

Bearing

• Duble shaft with two external bearings

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