Orifice plate DN 75 for pre-regulating the volume flow in front of the valve. Installation on the inside of air distributors with DN 75 connection Consists of 12 break-out rings Fire behavior class E according to EN 13501-1 Operating temperature -20 - + 60 °C Antistatic and antimicrobial Food-grade material All properties independently tested and certified by TÜV Süd or ISEGA Manufacturer: Wolf GmbH Article number: 2577589
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