NAK Gas Tight Shut off dampers are used to shut off ducts in air conditioning systems with the most critical safety requirements for tightness (gas-tight).
Description
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Application
Shut-off dampers of Type NAK for shutting off ducts in air conditioning systems with the most critical safety requirements for tightness (gas- tight). Gas-tight shut-off dampers ensure the level of tightness required by KTA Guideline 3601 (German Nuclear Safety Standards Commission, KTA) and by DIN 25414 even when the power supply or compressed air supply fails.
Key Features
Compact design and robust actuator mechanism allow for any installation orientation
Max air leakage rate is 0.0028 (l/s)/m² or 0.01 (m³/h)/m² @ differential pressure of 2000 Pa
Gas-tight closure, even when there is no power, due to special over centre locking mechanism
Variants with hand wheel, pneumatic actuator or electric actuator
Brass or stainless steel bearings
Powder-coated casing and blades
Maximum pressure loading of 5000 Pa, in closing direction
Available in standard sizes and many intermediate sizes
Optional equipment and accessories
Flange holes
Limit switch
Double acting pneumatic actuator, with optional solenoid valve
Electric actuator 3 × 230 V AC (400 V AC) or 230 V AC
Variants
NAK-H: Gas-tight shut-off damper with hand wheel
NAK-P: Gas-tight shut-off damper with pneumatic actuator
NAK-E: Gas-tight shut-off damper with electric actuator (400 V AC, 50 Hz)
NAK-E1: Gas-tight shut-off damper with electric actuator (230 V AC, 50 Hz)
Construction
Duct connection without flange holes
G: Flange holes on both sides
Nominal sizes
B: 200, 400, 600, 800,1000 mm (intermediate sizes: 201 – 999 mm,in increments of 1 mm)
H: 270, 510, 755, 1000 mm
Any combination of B × H
Attachments
Attachments: For opening and closing, and for capturing the blade end positions
Special features
Compact design and robust actuator mechanism allow for any installation orientation
Gas-tight closure, even when there is no power, due to special over centre locking mechanism
Maximum closed blade leakage rate is 0.0028 (l/s)/m² or 0.01 (m³/h)/m² at a differential pressure of 2000 Pa
Maximum pressure loading of 5000 Pa in closing direction
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Application
Shut-off dampers of Type NAK for shutting off ducts in air conditioning systems with the most critical safety requirements for tightness (gas- tight). Gas-tight shut-off dampers ensure the level of tightness required by KTA Guideline 3601 (German Nuclear Safety Standards Commission, KTA) and by DIN 25414 even when the power supply or compressed air supply fails.
Key Features
Compact design and robust actuator mechanism allow for any installation orientation
Max air leakage rate is 0.0028 (l/s)/m² or 0.01 (m³/h)/m² @ differential pressure of 2000 Pa
Gas-tight closure, even when there is no power, due to special over centre locking mechanism
Variants with hand wheel, pneumatic actuator or electric actuator
Brass or stainless steel bearings
Powder-coated casing and blades
Maximum pressure loading of 5000 Pa, in closing direction
Available in standard sizes and many intermediate sizes
Optional equipment and accessories
Flange holes
Limit switch
Double acting pneumatic actuator, with optional solenoid valve
Electric actuator 3 × 230 V AC (400 V AC) or 230 V AC
Variants
NAK-H: Gas-tight shut-off damper with hand wheel
NAK-P: Gas-tight shut-off damper with pneumatic actuator
NAK-E: Gas-tight shut-off damper with electric actuator (400 V AC, 50 Hz)
NAK-E1: Gas-tight shut-off damper with electric actuator (230 V AC, 50 Hz)
Construction
Duct connection without flange holes
G: Flange holes on both sides
Nominal sizes
B: 200, 400, 600, 800,1000 mm (intermediate sizes: 201 – 999 mm,in increments of 1 mm)
H: 270, 510, 755, 1000 mm
Any combination of B × H
Attachments
Attachments: For opening and closing, and for capturing the blade end positions
Special features
Compact design and robust actuator mechanism allow for any installation orientation
Gas-tight closure, even when there is no power, due to special over centre locking mechanism
Maximum closed blade leakage rate is 0.0028 (l/s)/m² or 0.01 (m³/h)/m² at a differential pressure of 2000 Pa
Maximum pressure loading of 5000 Pa in closing direction