Decompression Valves

The purpose of using decompression valves at cold rooms is to maintain the internal and external pressure balanced.

• The pressure variations periodically occur during the different defrosting phases and during the opening & closing of the cold room door.
• The lack of a decompression valve installation may cause the following problems: quick door opening resulting in deterioration of the stored products and crackings in coincidence of the panel connections and consequent frosting.
• The valves are supplied in three different models depending of the internal volume (V) of the cold room – small (from 30 up to 50 m³), medium (from 50 up to 100 m³) and large (from 100 and up to 800 m³).


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