3 or 4 twist-off vacuum capping machine It is used to cap seasoning,vegetable,bean curd,juice and jam etc. The equipment is suitable for sorts of shapes and specifications of glass bottle steam exhausting and sealing. It is equipped with frequency converter, steam spray exhausting and mechanical sealing device for complete function and high automation. It is used to vacuum seam for sorts of three or four screw cap of seasoning, vegetable, bean curd, juice and jam etc.