Stainless Steel Pneumatic Tank Bottom Diaphragm Valve, Hygienic Design 316L

1. Brief Introduction of Products:

A tank bottom diaphragm valve is a specialized sanitary valve installed directly at the lowest point of a process vessel or tank. It is designed to allow complete draining, sampling, or filling of the tank while completely eliminating stagnant areas (dead legs) where bacteria or product residue could become trapped.

Key Features and Benefits

• Zero Dead-Leg: The valve is engineered to weld truly flush to the inner contour of the vessel. This prevents a "sump" or recess, ensuring 99.8%+ product recovery and preventing contamination.

• Hermetic Sealing: A flexible diaphragm isolates the working mechanism (stem and actuator) from the process fluid. This prevents the fluid from contacting lubricants or atmospheric contaminants. 

• Sterile Processing (CIP/SIP): Because there are no crevices to harbor microorganisms, these valves are fully compatible with Clean-In-Place (CIP) and Sterilize-In-Place (SIP) protocols without requiring disassembly. 

2. Technical Specification:

     DIN Standards

This product are also available in DIN, ISO/IDF, SMS, BSP standards. Please feel free to contact us if you need it in other standards!

3. Key Applications and Use Cases:

Due to their strict sanitary designs, these valves are heavily relied upon in industries with high-purity standards: 

• Pharmaceutical and Bioprocessing: Used for sterile bioreactor and process vessel outlets.

• Food and Beverage: Utilized in dairy, brewing, and food processing lines where hygiene is strictly regulated.

• Cosmetics and Chemicals: Employed for batch processing where cross-contamination between different product runs must be avoided.

4. Key Design Features:

• Materials: Product-wetted parts are constructed from high-purity, corrosion-resistant stainless steel (typically 316L). The diaphragm itself is usually made of food/pharmaceutical-grade elastomers like EPDM, Silicone, or PTFE. 

• No Dead Legs: They are designed to prevent "dead legs" or crevices where product can pool, which is critical to stopping bacteria and mold growth. 

• Cleanability: The smooth internal surfaces are engineered to be easily sterilized and cleaned using Clean-in-Place (CIP) and Steam-in-Place (SIP) methods.