Pressure gauges used in food and sanitary industries have specific design features and materials to meet hygiene standards and regulatory requirements. Here are the key considerations and features of pressure gauges for these industries:

1. Sanitary Design: Pressure gauges for food and sanitary applications are designed to meet strict hygiene standards and prevent contamination. They typically feature smooth, crevice-free surfaces with no pockets or dead spaces where bacteria or contaminants can accumulate. This design facilitates easy cleaning and sterilization.

2. Materials: Pressure gauges for food and sanitary applications are constructed using materials that are compatible with food-grade standards and resistant to corrosion, chemical exposure, and high temperatures. Common materials include stainless steel for the case, wetted parts, and fittings, as well as sanitary seals and gaskets made of FDA-approved materials such as EPDM or silicone.

3. Hygienic Seals and Connections: These pressure gauges often feature sanitary seals and connections, such as tri-clamp or sanitary flange fittings, to ensure a secure and hygienic connection to process equipment. The seals are designed to withstand high-pressure washdowns and sterilization procedures without compromising integrity.

4. Accuracy and Reliability: Pressure gauges used in food and sanitary industries must provide accurate and reliable pressure measurements to ensure product quality and safety. They are calibrated to meet industry standards and may feature higher accuracy specifications compared to standard industrial pressure gauges.

5. Easy-to-Clean Design: Cleanability is paramount in food and sanitary applications. Pressure gauges for these industries are designed with rounded edges, smooth surfaces, and minimal crevices to facilitate thorough cleaning and prevent bacterial growth. Some gauges may also feature removable parts or quick-disconnect fittings for easier maintenance.

6. Hermetically Sealed Design: To prevent fluid ingress and ensure sanitary conditions, some pressure gauges for food and sanitary applications may feature a hermetically sealed design. This prevents moisture, contaminants, or cleaning agents from entering the internal components of the gauge, maintaining its accuracy and reliability over time.

7. Compliance with Regulations: Pressure gauges used in food and sanitary industries must comply with regulatory standards such as those set by the FDA (Food and Drug Administration) or EHEDG (European Hygienic Engineering & Design Group). These standards govern materials, design, and manufacturing processes to ensure the safety and integrity of food and pharmaceutical products.

8. Application-Specific Features: Depending on the specific application within the food and sanitary industries, pressure gauges may include additional features such as vibration resistance, high-temperature capabilities, or special coatings for added protection against corrosive substances.

Overall, pressure gauges designed for food and sanitary industries prioritize hygiene, cleanliness, and accuracy to ensure compliance with regulatory standards and maintain product quality and safety.