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ARP - Model RC-L10 Series -Non Return Damper Valve
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Non-return or pressure-relief dampers are gravity-operated damper. Widely used to regulate the pressure in the ductwork system. The opening pressure can be adjusted by changing the position of the counterweight. The pressure relief damper is often used as a vacuum break damper which opens to relieve excessive negative pressure inside the duct.
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- Size range upon request
- Max temperature 200 °C
- Size range upon request
- Interception service
- Designed for 50 mm insulation
- CE marking
Operating conditions
- Design temperature –40°C ÷ 200°C
- Design pressure –0,1 barg ÷ +0,5 barg
Applicable standards
- Design EN 593, EN 12516, ASME B16.34
- Circular flanges EN 1092-1, ASME B16.5, others on request
- Rectangular flanges according to customer request
- Testing EN12266, ANSI/FCI70-2
Ends connections
- Circular or rectangular body:
- Bolted flanges
- Butt welded
Blade seals options
- Metal to metal FCI 70-2 max tightness class II
- Soft sealing FCI 70-2 max tightness class III
Valve actuation
- Counterweight mechanism
Shaft seals options
- No seal
- Graphite braid packing
- Braid packing with lantern ring and air sealing
- Flat elastomeric gasket
Materials
- Carbon steels
- CORTEN A
- Wear resistant steels
- Ferritic, austenitic and duplex stailness steels
Bearing options
- One external bearing
- Double shaft with two external bearings