Horizontal High Pressure Autoclave is a double walled sterilization machine which is designed for the efficient cleaning and removal of the microbiological organisms by a rapid and high pressure saturated steam at an elevated temperature. The cylindrical chamber is fabricated by using mild steel which is mounted on a tubular mild steel frame to give rigid support to the whole assembly. It is also fitted with various types of safety instruments such as pressure gauge, safety valve and steam release valve to prevent damages due to extreme working conditions.