How to distinguish between sanitary-grade valves and industrial valves

The biggest difference between sanitary-grade valves and industrial valves is that the internal chambers of sanitary-grade valves must be fully polished, and they also need to have any oil removed; oil is not allowed to be present

Use sanitary flanges for easy disassembly, cleaning

The Watt BW11S sanitary-grade clean steam trap is used in biopharmaceuticals, where certain processes require pure or clean steam, such as in SIP and WFI systems. It is highly necessary to have hydrophobicity for clean steam or pure steam. The quality of pure steam is closely related to the removal of air and steam condensate. Steam, as the most commonly used heating and sterilization medium, is widely employed in biopharmaceutical and food and beverage processes. As the most commonly used component in steam systems, steam traps play a vital role in the pharmaceutical industry, where SIP is a key process for ensuring system safety standards and product quality. A large number of steam traps are used in the SIP of containers, and the proper selection of these traps has a significant impact on the control and efficiency of SIP. 　Based on the purity of the steam, it can be classified into different grades, which determines the design and selection of the steam traps. Pure steam is used in pharmaceutical aseptic production (it must reach injection water quality upon condensation). The steam trap used for pure steam should meet the following basic requirements: no water accumulation, self-drainage, and operation in case of failure ； The higher the purity of the steam, the greater its corrosiveness. Pure steam systems require materials of 316L stainless steel grade to ensure corrosion resistance and to prevent the occurrence of \"red rust\" that is characteristic of systems using non-stainless steel materials. Non-metallic materials must also have appropriate approvals; for example, they should be made from materials approved by the FDA and meet the toxicity requirements specified in USP VI. Seals should have a certain degree of creep resistance, show no peeling, and provide good sealing performance. Polishing: Since steam itself is sterile, the requirements for surface polishing of pure steam are slightly lower than those for injected water, typically at 0.6μm. To meet GMP requirements, clean valve components must provide the following documents: material certification with traceability and proof of internal polishing; as well as information regarding non-metallic materials. The Watt BW11S clean-type steam trap boasts excellent drainage performance. For pure steam, air represents a significant heat transfer resistance and also affects the penetration of steam sterilization. During the heating phase, a large amount of steam enters the container, pushing out the air inside it. At this time, a large amount of air needs to be removed quickly, which requires the steam trap to have excellent exhaust capabilities. If exhaust is poor, it will prolong the time required for heating. It should be noted that 1 mm of air layer is equivalent to 15 meters of copper wall; residual and accumulated air can even create a barrier to sterilization. Air masses near the temperature probe also pose obstacles to temperature monitoring. The Watt BW11S clean-type steam trap offers excellent continuous drainage capabilities. When the system enters a heating phase, a large amount of steam is converted into condensate water; at this time, it is necessary for the steam trap to be able to remove this condensate water quickly, thereby preventing it from accumulating within the system and the drainage pipes. In clean steam and pure steam systems, the presence of water not only reduces heat transfer efficiency due to increased thermal resistance but also poses a risk of contamination. Therefore, when selecting a steam trap, it should be capable of promptly removing condensate from the system. In some pure steam sterilization processes, the steam load varies greatly. During the heating phase, it is necessary to remove air in a short time and raise the temperature to the designed level; generally, the peak steam volume is 100%. During the insulation phase, the steam required is only to compensate for heat loss, and the amount of steam can be less than 10%. This requires that the steam trap have the ability to respond well to changes in load levels. The Watt BW11S clean-type steam trap is a pressure-balanced thermostatic steam trap, whose operating principle and structural features make it an appropriate choice for such requirements and applications. The valve diaphragm box is a temperature-sensitive element made of special materials. It has high voltage resistance, strong resistance to water hammer, and is sensitive to temperature; therefore, it responds promptly ； The opening and closing of the valve are controlled by the phase change of a temperature-sensitive fluid; it has a small size but a large flow rate ； It can operate properly within a wide range of pressure changes ； Can be installed horizontally or vertically ； Seamless design to minimize bacterial accumulation ； Rapid air emission, ensures quick startup, and allows for continuous operation ； Compact in structure, easy to install, and convenient for maintenance. The Watt BW11S clean-type steam trap is a reliable choice for clean steam and pure steam systems, suitable for steam drainage in clean steam pipelines as well as in equipment such as sterilization cabinets.

For the surface to be cleaned, alcohol should be used first, followed by acetone, and it should also have a brand label

Sanitary-grade valves are made of stainless steel, with both the interior and exterior polished, ensuring no reaction with the materials handled. Little residue remains inside the valve.