A pneumatic upward extension tank bottom valve is a special type of valve used to control the flow of fluids through pipelines. It is commonly used in tanks and other large containers to enable control of the entry and exit of fluid media.
The type representation method for this valve includes a series of code names that describe its characteristics and specifications. These codes include code, seal material, body type, connection method, nominal pressure, body material, nominal diameter, control method, explosion protection level, accessory options, etc. These code names have specific meanings and uses.
For example, the code name WH indicates the Weiheng brand, the code F stands for PTFE as the sealing material, and the code B stands for ExdIl BT4 Gb explosion-proof explosion-proof grade. Other code names have similar meanings and uses to describe different aspects of characteristics and specifications.
The valve can be connected in a variety of ways, including female thread, lead ring, integral switching type, external thread, flange, double acting and single acting adjustment type, etc. These codes are used to describe how the valves are installed and connected, so that the appropriate valves can be selected according to different application scenarios.
In addition, the valve can be controlled in a variety of ways, including standard switching and regulating types. These codes are used to describe how valves are controlled so that the appropriate valve can be selected for different control needs.
The following points need to be noted:
The model representation method needs to accurately describe the meaning and purpose of the various code names to be able to understand and use the valve correctly.
It is necessary to introduce the differences between various code names and the scope of application so that the appropriate valve can be selected according to the actual application scenario.
The special uses and characteristics of pneumatic upward expansion tank bottom valves need to be highlighted in order to understand their advantages and application scope.
| Model representation method | ||||||||||||
| WH | -600 | —Q1 | —C1 | —F | —16 | —P | —25 | —D1 | —B | —W2 | —B2 | —L |
| >1. Weiheng brand | >2. Drive mode | >3. Valve body type | >4. Connection method | >5. Sealing material | >6. Nominal pressure | >7. Valve body material | >8. Nominal diameter | >9. Control mode | >10. Explosion-proof level | —20~150℃ | >12. Accessory options | >13. Three flows |
| 1~7 mandatory options, 8~13 optional | ||||||||||||
| 1 codename | 5 codename | Sealed material | 10 code | Explosion-proof rating | |
| WH | Weiheng brand | F | PTFE | B | ExdIl BT4 Gb explosionproof and explosion-proof type |
| PPL | Para-polyphenylene | BZ | ExdllCT5 Gb explosion-proof and explosion-proof type | ||
| 2 codename | Drive mode | H | Metal hard seal | BC | Exdll CT6 Gb explosionproof and explosion-proof type |
| 600 | Pneumatic actuator series | Y | cemented carbide | BM | ExmbllT4 Gb cast explosion-proof type |
| 900 | Electric actuator system | X1 | Ding Qing rubber NBR | BA | Exiall CT6Ga intrinsically safe and explosion-proof |
| 2001 | Column plastic actuator angle seat valve series | X2 | Natural rubber NR | ||
| 2002 | Stainless steel actuator angle seat valve series | X3 | EPDM | 11 codenames | Medium temperature |
| X4 | Viton rubber FPM | W1 | -20-80C | ||
| 3 codename | Body type | X5 | Food grade silicone rubber SI | W2 | -20-150C |
| Q1 | Two-way valve | F46 | Fully lined polyperfluoroethylene FEP | W3 | -20-250C |
| Q2 | Three-way valve | PFA | Fully lined with soluble PTFE PFA | W4 | -29-425C |
| Q3 | Four-way valve | F4 | Fully lined PTFE | W5 | -29-650C |
| Q4 | Stationary ball valve | N | nylon | W6 | -196-60C |
| Q5 | V-ball | TC | Lined ceramic | ...... | ...... |
| Q6 | Low profile ball valve | J | Rubber lining | It has a special temperature that can be designed and manufactured according to customer requirements | |
| Q7 | Sanitary grade ball valves | PEEK | Polyether ether ketone | ||
| Q8 | Plastic ball valves | W | When the ring | 12 codenames | Accessory selection |
| Q9 | High Vacuum Ball Valve | ...... | ...... | B1 | 2-position, 3-way solenoid valve |
| Q10 | Fluorine ball valve in the whole village | Other special sealing materials can be designed and manufactured according to customer requirements | B2 | 2-position 5-way solenoid valve | |
| Q11 | Cryogenic ball valves | B3 | 2-position 3-way explosion-proof solenoid valve | ||
| Q12 | Insulated ball valve | 6 codename | Nominal pressure | B4 | 2-position 5-way explosion-proof solenoid valve |
| Q13 | Eccentric hemispherical valve | ...... | ...... | B5 | Filter pressure reducing valve |
| Q14 | Tank bottom valve | B6 | Limit switch | ||
| Q15 | Ceramic ball valves | 7 codename | Body material | B7 | Explosion-proof limit switch |
| D1 | Centerline soft-sealed butterfly valve | Q | Ductile iron HT200 | B8 | Hand manipulation mechanism |
| D2 | 3. Eccentric butterfly valve | C | carbon steel | B9 | Locator |
| D3 | Sanitary Butterfly Valve | P | Stainless steel 304 | ...... | ...... |
| D4 | Plastic butterfly valve | R | Stainless steel 316 | ||
| D5 | Ventilation butterfly valve | PL | Stainless steel 304L | 13 codenames | Three flows |
| D6 | Fluorine butterfly valve in the whole village | RL | Stainless steel 316L | L | Tee L-type BC switching |
| D7 | High vacuum butterfly valve | U | PVC UPVC | T1 | Tee T-type C-port switch |
| D8 | Powder butterfly valve | PP | Reinforced polypropylene RPP | T2 | Tee T-type AB switching |
| Z1 | Gate valve | L | Aluminum alloy | T3 | Tee T-type AC switching |
| Z2 | Knife gate valve | ...... | ...... | T4 | Tee T-type B-port switch |
| J1 | Globe valve | Other special valve body materials can be designed and manufactured according to customer requirements | |||
| J2 | Bellows cut stop valve | ||||
| J3 | Angle seat valve | 8 codename | It is called the path | ||
| F1 | Upward expansion discharge valve | ...... | ...... | ||
| F2 | Downward discharge valve | ||||
| Other special valve body materials can be designed and manufactured according to customer requirements | 9 code | Control mode | |||
| Z | Standard switch type | ||||
| 4 codenames | Connection | T1 | Integral switching type | ||
| C1 | Female thread | T2 | Overall adjustment | ||
| C2 | By order | T3 | RS485 bus type | ||
| C3 | Male thread | D1 | Double acting | ||
| C4 | flange | D2 | Double-acting adjustment type | ||
| C5 | KF vacuum chuck | E1 | Uni-acting normally closed | ||
| C6 | weld | E2 | Single-acting normally closed regulation type | ||
| C7 | Pair clip | E3 | Single-acting and always open | ||
| C8 | Clamps | E4 | Single-acting normally open adjustment type | ||
Pneumatic Upward Expansion Tank Bottom Valve
The Pneumatic Upward Expansion Tank Bottom Valve is a critical component in systems that require precise control of fluid or gas flow. It is designed to regulate the inflow and outflow of fluids in upward expansion tanks, commonly used in hydraulic, pneumatic, and HVAC systems. The valve operates through pneumatic actuation, providing rapid and energy-efficient pressure control and flow direction regulation. This valve’s design ensures reliable operation and minimal downtime while maintaining system stability.
This guide outlines the detection standards, maintenance techniques, real-world applications, and fault diagnosis for the Pneumatic Upward Expansion Tank Bottom Valve. Whether you're an engineer looking to optimize system performance or a technician needing guidance on troubleshooting, this guide provides the information you need for smooth valve operation.
The Pneumatic Upward Expansion Tank Bottom Valve offers several key benefits, making it a vital component in pressure regulation and fluid flow control systems.
The valve uses pneumatic actuation to manage fluid flow or gas direction, providing fast, reliable, and energy-efficient control. Pneumatic operation minimizes manual intervention and reduces the risk of human error.
Constructed from high-quality materials such as stainless steel, the valve is designed to endure high-pressure and high-temperature environments. The compact design allows for easy installation and integration into existing systems without taking up too much space.
The valve ensures accurate and stable flow regulation in upward expansion tank systems. This is critical for maintaining pressure stability, preventing overflows, and ensuring smooth system operation.
The valve is built to handle corrosive fluids or gases often found in industrial systems. It is designed with corrosion-resistant seals and body materials, ensuring long service life in even the most demanding environments.
Below is a table of technical specifications for the Pneumatic Upward Expansion Tank Bottom Valve:
| Specification | Details |
|---|---|
| Valve Type | Pneumatic Upward Expansion Tank Bottom Valve |
| Material | Stainless Steel, Carbon Steel, Cast Iron |
| Seal Material | PTFE, NBR, Viton |
| Pressure Rating | 0-40 bar (PN40) |
| Temperature Range | -10°C to 150°C |
| Flow Control | Pneumatic Actuation (On/Off, Flow Regulation) |
| Size Range | 1” to 6” (DN25 to DN150) |
| Connection Type | Flanged, Threaded, Butt-weld |
| Operating Air Pressure | 4 to 8 bar |
| IP Rating | IP65 (Dust and water-resistant) |
| Flow Coefficient (Cv) | 20 to 400 |
| Automation Interface | PLC, SCADA, DCS |

Before and during the operation of the Pneumatic Upward Expansion Tank Bottom Valve, several inspection and testing standards must be followed to ensure the valve operates as expected and meets safety and performance regulations.
Regular visual inspections should be conducted to check for external damage, corrosion, or leakage. Ensure that the valve body, seals, and connections are intact and free from any signs of wear or damage.
Perform pressure testing to ensure the valve can handle the system's required pressure without failure. Testing should be done according to industry standards, such as ISO 5208 for pressure testing valves. The valve should be tested at 1.5 times the rated pressure to ensure structural integrity.
Conduct a leakage test on the valve to check for any fluid or gas leaks at high pressure. Ensure that seals and connection points are properly sealed, and no air or fluid is escaping during operation.
Perform a functional test to verify that the valve opens and closes correctly in response to pneumatic signals. The actuator response time should be measured to ensure that the valve operates within the specified time limits.
Proper maintenance is essential for ensuring the Pneumatic Upward Expansion Tank Bottom Valve operates at peak performance and has a long service life. Below are some maintenance tips to help keep the valve in top condition.
Clean the valve regularly to remove debris, dirt, and moisture that could interfere with the internal mechanisms. Compressed air or a soft brush should be used to clear the valve of particles that might clog or damage seals and actuators.
Lubricate moving parts such as the actuator and valve stem. Use high-quality lubricant recommended by the manufacturer to prevent wear and tear on these parts, which could otherwise lead to sluggish performance.
Check seals and O-rings for signs of wear or degradation. Replace damaged seals promptly to avoid leakage. Regular seal replacement will help maintain pressure stability and ensure the long-lasting performance of the valve.
Ensure that the pneumatic actuator is functioning correctly and receives the proper air pressure. Regularly inspect the actuator for any signs of corrosion, damage, or wear that could impact valve performance.
The Pneumatic Upward Expansion Tank Bottom Valve is utilized in various industrial applications, including:
Problem: In water treatment systems, precise flow control is critical for balancing inflow and outflow to maintain optimal tank levels and pressure.
Solution: The Pneumatic Upward Expansion Tank Bottom Valve ensures stable fluid regulation in these systems, preventing overflows and optimizing pressure in the expansion tank.
Problem: In HVAC systems, pressure regulation is essential for maintaining balanced airflow and preventing system failure.
Solution: The valve is used in the expansion tank to control the pressure and ensure stable air and fluid flow, optimizing HVAC system efficiency.
Problem: Chemical processing systems require valves that can handle corrosive fluids and harsh environments while maintaining stable flow control.
Solution: The valve is made from corrosion-resistant materials and is capable of handling aggressive chemicals, ensuring that the system operates safely and efficiently.
Proper diagnosis of valve malfunctions is essential to restoring full functionality. Below is a guide for diagnosing common issues and troubleshooting the Pneumatic Upward Expansion Tank Bottom Valve.
| Issue | Possible Cause | Solution |
|---|---|---|
| Valve does not actuate | Insufficient air pressure or actuator failure | Check air supply pressure and actuator condition. Replace damaged parts. |
| Leaks from valve body | Worn seals or improper installation | Inspect seals and replace if necessary. Ensure the valve is correctly installed. |
| Slow response time | Blocked air supply or dirty actuator | Clean actuator and check air supply for blockages. |
| Inconsistent flow regulation | Faulty pneumatic control or damaged seals | Check pneumatic system for leaks or blockages. Replace seals and test actuator functionality. |
The Pneumatic Upward Expansion Tank Bottom Valve is a reliable and versatile solution for fluid regulation and pressure control in pneumatic and hydraulic systems. Its pneumatic actuation, durability, and compact design make it ideal for water treatment, HVAC, and chemical processing systems. By following the inspection standards, maintenance tips, and troubleshooting steps provided, you can ensure long-term performance and optimal functionality.
For more information, custom configurations, or technical support, feel free to contact our customer service team.
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