Constructional Features

The pressure vessel is a key component of the Sterilizer and is provided with comprehensive documentation which includes Weld Qualification, Radiography Testing, Surface Finish Profile, Material testing and Hydro-testing. The inner walls have a surface finish better than 0.8µm. All rounded and sloped surfaces are designed for complete drainable execution. All nozzles and connections are fabricated from seamless, tubes for best hygiene and pressure security. The chamber is equipped with a Jacket for providing strength to the chamber and for temperature regulation inside the chamber for heating, drying and final cooling by recirculating water.

Of the entire machine, the costliest (depending on the size of the autoclave) and most important single piece of hardware is the fast-opening door. They can be of Automatic Sliding type or of the hinged type with single or double door configuration. The tightness of the Pressure Vessel is ensured by the gasket which is seated in a groove fabricated into the chamber frame and is pressed by compressed air or steam against the door. For opening of the door the gasket is retracted by vacuum

The fabrication of the pressure vessel is the most important activity in the manufacture of sterilizer. We have a dedicated and well equipped facility for in house fabrication of pressure parts and this ensures we have complete control over the quality. All material used is properly identified and tested. All welders are qualified and welding documented. Proper in process inspections and test guarantee the result of the fabrication process.

In construction of a Sterilizer the piping defines the processes the system can run and hence the product/loads which can be processed. Sterilizer piping is fabricated from sanitary laser welder pipelines with a surface finish better than 0.8µ. All pipe fittings elbows, tees, reducers etc. are also manufactured from prime stainless steel procured directly from steel mills. All process piping is welded using automatic orbital techniques and can be electro-polished on request.

The accuracy of the sterilization process depends on the quality and reliability of critical components like valves, steam traps, safety valves, vacuum pumps, circulating pumps etc. All parts are purchased from qualified and internationally recognized suppliers and accompanied by test / calibration reports..

In any sterilization process key parameters – temperature, pressure, time etc. need to be accurately monitored, indicated and controlled. Special care is taken in selecting each sensing element. Our process and quality engineers are focused on ensuring that each sensor is properly tested calibrated and installed.

The sterilization systems can be provided with water ring or oil sealed vacuum systems as the application requires. The water ring systems can be optionally provided with a water saver arrangement which besides reducing water consumption also ensures consistent vacuum performance.

The air detector is an automatic device that operates during each cycle of operation to provide additional assurance that excess air (and/or non-condensable gases) does not remain at the end of the air removal stage to adversely affect the sterilization process. The chamber drain is fitted with an Air detector Device to generate an alarm in a situation of ineffective air removal from the chamber. The design complies with all requirements of EN285.