NAK SERIES
Gas-tight air shut-off valves are designed to ensure a level of system tightness that complies with KTA Guideline 3601 (German Nuclear Safety Standards Commission) and DIN 25414 even in the event of a loss of power supply or compressed air pressure.
Compact design and high reliability of the drive mechanism provide flexible installation functionality
Maximum permissible leakage 0.0028 (l/s)/m² or 0.01 (l/s)/m² at a pressure difference of 2000 Pa
Thanks to a special locking mechanism, gas tightness is ensured when closed, even in the absence of power supply
Versions with handwheel, electric or pneumatic drive
Bearings made of brass or stainless steel
Powder coated body and doors
Maximum loading pressure 5000 Pa in the closing direction of the valve
Available in standard and custom sizes
Application
NAK series air shut-off valves are designed for installation in ductwork of ventilation and air conditioning systems that meet the most stringent tightness requirements (gas)
Gas-tight air shut-off valves ensure a level of system tightness that complies with KTA Guideline 3601 (German Nuclear Safety Standards Commission) and DIN 25414 even in the event of a loss of power supply or compressed air pressure.
Characteristics
Compact design and high reliability of the drive mechanism provide flexible installation functionality
Thanks to a special locking mechanism, gas tightness is ensured when closed, even in the absence of power supply
Maximum permissible leakage with closed doors 0.0028 (l/s)/m² or 0.01 (l/s)/m² at a pressure difference of 2000 Pa
Maximum loading pressure 5000 Pa in the closing direction of the valve
Optional equipment
Flange holes
Limit switches
Double-acting pneumatic actuator with solenoid valve (optional)
Electric drive 3 × 230 V a.c. VAC (400 VAC) or 230 VAC current
