Pneumatic tank bottom discharge valve
The Pneumatic Tank Bottom Discharge Valve is a specialized automated valve designed for safe, efficient, and complete discharge of materials from the bottom outlet of storage tanks, reactors, pressure vessels, and process equipment.
Featuring a compact bottom-entry design and pneumatic actuator operation, this valve provides reliable shut-off, fast opening and closing, and excellent flow control performance. Its optimized structure minimizes dead zones and material retention, making it especially suitable for applications requiring clean discharge, high hygiene standards, and prevention of contamination or residue accumulation.
The valve is widely used in industries involving powders, liquids, viscous materials, slurry, chemicals, and pharmaceutical products. The pneumatic actuator enables remote automatic operation and integration into process control systems, improving production efficiency and operational safety.
Pneumatic tank bottom discharge valve
We provide professional OEM manufacturing and customized solutions according to different application requirements, including:
Our Pneumatic Tank Bottom Discharge Valves are manufactured under strict quality management systems and comply with international valve standards, including:
Parameter Specifications
| Parameter | Specification |
|---|---|
| Product Name | Pneumatic Tank Bottom Discharge Valve |
| Valve Type | Tank Bottom Outlet Valve / Bottom Drain Valve |
| Operation Type | Pneumatic Actuated |
| Valve Structure | Straight Type / Angle Type / Flush Bottom Type |
| Nominal Size | DN25 – DN300 (Customized Available) |
| Pressure Rating | PN10 – PN420 / Class 150 – Class 2500 |
| Connection Type | Flanged, Welded, Customized Tank Connection |
| Valve Body Material | Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel |
| Disc / Plug / Ball Material | Stainless Steel, Alloy Materials |
| Stem Material | Stainless Steel / Special Alloy |
| Seat Material | PTFE, RPTFE, PEEK, EPDM, Metal Seat |
| Actuator Type | Pneumatic Double Acting / Single Acting |
| Control Mode | Automatic On-Off Control |
| Air Supply Pressure | 3 – 8 Bar |
| Operating Temperature | -196°C to +500°C (Depending on Materials) |
| Applicable Media | Liquid, Powder, Slurry, Chemical Media, Viscous Materials |
| Leakage Class | ANSI Class V / VI / Bubble Tight Shut-off |
| Flow Direction | Bottom Discharge / Tank Drainage |
| Dead Zone Design | Low Dead Volume / Anti-Residue Design |
| Surface Treatment | Polishing / Electropolishing / Coating |
| Design Standard | ASME B16.34 / API Standards |
| Pressure Test Standard | API 598 / EN 12266 |
| Flange Standard | ANSI B16.5, EN1092, JIS, GB/T |
| Sanitary Design | Optional |
| Anti-Static Design | Available |
| Fire Safe Design | Optional |
| Automation Accessories | Positioner, Solenoid Valve, Limit Switch, Controller |
| Corrosion Protection | Coating / Special Surface Treatment |
| Certification | ISO, API, CE, SIL, Fire Safe, Fugitive Emission |
| OEM Service | Available |
Industry Applications
✔ Complete tank drainage capability
✔ Low dead volume design
✔ Prevents material accumulation
✔ Fast pneumatic operation
✔ Suitable for automated process systems
✔ Excellent sealing performance
✔ Hygienic and easy-to-clean design options
✔ Resistant to corrosion and harsh media
✔ Multiple material and actuator configurations
✔ Full OEM customization capability
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
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