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RS-M21 Series

Multi louver damper for gases

Size range upon request

Max temperature 600 °C

• Size range upon request

• 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 according to customer 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 
• 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 and air sealing
• Seal air cleaning system on shaft

Materials

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

Bearing options

• One external bearing
• Double shaft with two external bearings

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