AV-4-S0393 Manual Diaphragm Tank Bottom Valve
| Specification | 1″–4″, DN25–DN100 |
| Working Pressure | Full Vacuum ~ 10 bar |
| Working Temperature | -20℃ to +150℃ |
| Diaphragm Materials | EPDM+PTFE (dual layer) / EPDM / Silicone / FKM (Viton) |
| Connection Types | Clamp, weld, thread; 3A, BPE, DIN, SMS, IDF, ISO |
Manual Diaphragm Tank Bottom Valve Description
Manual Diaphragm Tank Bottom Valve is specially designed for installation at the lowest point of process and storage tanks, ensuring complete and reliable drainage of media. By positioning the valve directly at the tank bottom, it minimizes dead space and prevents residue accumulation, which is critical for maintaining hygiene and process efficiency.
Operated by a handwheel, the valve stem drives the diaphragm to open or close the flow path. When closed, the diaphragm provides a tight seal against the valve seat to prevent leakage. When opened, it allows smooth, unobstructed discharge of the medium. This design ensures safe, efficient, and contamination-free draining of liquids.
With its hygienic structure, corrosion-resistant materials, and easy-to-clean design, the Manual Diaphragm Tank Bottom Valve is widely used in pharmaceutical, biotechnology, food & beverage, and chemical industries where purity, safety, and reliability are essential.
Manual Diaphragm Tank Bottom Valve Specifications
| Item | Specification |
| Size | 1″–4″, DN25–DN100 |
| Pressure | ≤10 bar (145 PSI) |
| Material | ASTM 316L, 1.4404, 1.4435 NB2 (Fe < 0.5%) |
| Temperature Range | -20℃ to +150℃ |
| Connection Types | Clamp, weld, thread; 3A, BPE, DIN, SMS, IDF, ISO |
| Diaphragm Materials | EPDM+PTFE (dual layer) / EPDM / Silicone / FKM (Viton) |
| Certifications | 3A-54-02/1580, PED 97/23 EC, FDA 177.2600 |
Manual Diaphragm Tank Bottom Valve Applications
Pharmaceutical industry – complete drainage of tanks and vessels while maintaining sterile conditions
Biotechnology – safe and precise media discharge in bioreactors and process tanks
Food & beverage processing – hygienic emptying of tanks containing liquids or semi-liquids
Chemical industry – controlled discharge of corrosive or sensitive fluids
Dairy industry – effective drainage of milk or other dairy products without residue
Cosmetic production – clean and efficient emptying of creams, gels, and liquid formulations
Laboratories & R&D – precise tank emptying in pilot plants or experimental setups
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