● Over/under pressure valve to eliminate the difference
       in pressure in and outside the cold store, caused by
       temperature fluctuations.
    

    壓力平衡閥是為消除冷凍庫房內外由溫度波動所引起之壓力變化。俗稱"防爆孔"
    壓力平衡閥的數量需依據專業廠商提供之公式及冷凍公司提供之計算之，並選用合適的防爆孔。