Antibiotic shut-off valves are mainly used in fields such as biological fermentation, pharmaceutical and beer fermentation, amino acid fermentation, pesticide fermentation, biological fertilizer fermentation, various antibiotic fermentation, control of materials, water, gas, and cold in biology, biochemistry, chemical pharmaceuticals, etc. The bottom can be equipped with drainage holes according to customer needs, with long high-temperature resistance and zero leakage level without dead corners.