CD-M21 Series
Double blade butterfly valve for gases
Diameter range DN150 ÷ DN3000
• 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
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
• Air sealing – Perfect tightness with pressurized air chamber
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 steel for high temp
>• Ferritic, austenitic and duplex stailness steels
Bearing options
• Duble shaft with two external bearings
DOWNLOADS INFO
More info on this valve?
Do you want more information on this ARP Industry product?