The manual integrated duplex ball valve is a special valve mainly used to control the flow of medium (such as gas, liquid, etc.) in pipelines. It consists of two independent ball valves controlled by a drive mechanism. This valve has both manual and automatic control methods, and can be selected and used according to needs.
Duplex ball valve Here's how it works:
When the two ball valves are closed, the valve can completely cut off the flow of the medium, acting as a shut-off.
By controlling the drive mechanism, any ball valve can be opened or closed individually or simultaneously to achieve control of the medium flow direction.
Under the automatic control mode, the duplex ball valve can be automatically adjusted and controlled through cooperation with sensors, controllers and other equipment. For example, when parameters such as pressure and flow rate in the pipeline change, the duplex ball valve can automatically adjust the opening of the ball valve according to the signal of the sensor to maintain the stable flow of the medium in the pipeline.
Since the duplex ball valve has two independent spheres, even if one of them fails or is damaged, the other can still function normally, improving the reliability and safety of the valve.
The manual integrated duplex ball valve is a powerful, safe and reliable valve that is widely used in various industrial pipelines, equipment and automation systems.
| 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 | ||
Hand-Integrated Double-Interlocking Bleed Ball Valve
The Hand-Integrated Double-Interlocking Bleed Ball Valve is a high-performance valve designed for precision fluid control and enhanced safety in demanding industrial applications. Featuring a double-interlocking system, this valve ensures secure sealing and prevents accidental leakage during operation. The hand-integrated design allows for manual operation, giving operators complete control over flow regulation in high-pressure systems. It also includes a bleed valve feature, allowing for the safe venting of trapped fluids, preventing pressure buildup, and enhancing overall system safety.
This valve is commonly used in industries such as chemical processing, oil and gas, petrochemical, and pharmaceuticals, where safety and reliability are critical. In this comprehensive guide, we will cover key aspects of the Hand-Integrated Double-Interlocking Bleed Ball Valve, including:
Warranty Policy
Frequent Issues
Product Specifications
Shipping Precautions
By understanding the key features and operational benefits of this valve, you can ensure optimal performance in your applications.
The double-interlocking design ensures that the valve remains securely closed during operation, even under high-pressure conditions. This mechanism helps prevent accidental leakage, safeguarding both the system and the operator from hazardous fluid exposure.
The hand-integrated design allows operators to manually control the valve, providing greater precision and ease of use. Whether in a manual control system or as part of an automated process, this valve offers flexibility and reliability for different applications.
The bleed valve feature allows operators to safely vent trapped fluids from the valve, preventing pressure buildup and reducing the risk of system failure. This is crucial in applications where pressure control is paramount for safety.
Built with high-quality materials, the valve is resistant to corrosion, wear, and extreme operating conditions. It is designed to handle abrasive and high-temperature fluids, making it ideal for chemical, petrochemical, and oil & gas industries.

The Hand-Integrated Double-Interlocking Bleed Ball Valve is engineered to meet the demands of high-performance systems. Below are the technical specifications for this valve:
| Specification | Details |
|---|---|
| Valve Type | Ball Valve |
| Design | Double-Interlocking, Bleed Valve |
| Actuation | Manual Hand-Operated |
| Material | Stainless Steel 316, Brass, or Carbon Steel |
| Pressure Rating | Up to 5000 PSI |
| Temperature Range | -20°C to 200°C |
| Flow Capacity | 1/4" to 2" (varies by model) |
| Seal Material | PTFE |
| Valve Body Type | Full Port / Standard Port |
| Leakage Class | ANSI/FCI 70-2 Class VI |
| Explosion-Proof | Yes (compliant with ATEX/IECEx) |
Valve Body: Stainless Steel 316 or Carbon Steel
Ball: Stainless Steel
Seals: PTFE (Polytetrafluoroethylene) for leak-proof sealing
O-rings: Viton or EPDM for chemical resistance
Actuation Mechanism: Manual Hand Control with integrated double-interlocking system.
These specifications ensure that the valve can handle high-pressure, high-temperature, and corrosive conditions with ease. The high-quality materials also guarantee the valve’s longevity and reliability in demanding applications.
The Hand-Integrated Double-Interlocking Bleed Ball Valve comes with a standard 2-year warranty, covering defects in material and workmanship under normal usage conditions. The warranty does not cover damage caused by improper installation, misuse, or failure to adhere to maintenance guidelines.
Manufacturing Defects: Any defects in materials or workmanship within the warranty period.
Seal Failures: Covered if seal failure occurs under normal operating conditions.
Valve Body and Ball: Covered against any cracks, corrosion, or damage.
Improper Installation: Damage resulting from incorrect installation or handling.
Abuse or Misuse: Any damage caused by overpressure, chemical exposure, or mechanical abuse.
Consumable Parts: Items like seals, o-rings, or other parts subject to normal wear and tear.
For warranty service, please provide the purchase details, and our customer service team will assist you with repairs or replacements according to the policy.
While the Hand-Integrated Double-Interlocking Bleed Ball Valve is designed for durability, it’s essential to be aware of potential issues and how to address them. Below are common problems and troubleshooting steps:
Possible Causes:
Worn Seals: Over time, seals may wear out, causing leakage.
Improper Installation: Misalignment during installation can cause leaks.
Troubleshooting:
Check Seals: Inspect seals for wear and replace if necessary.
Ensure Proper Alignment: Reinstall the valve ensuring proper sealing and alignment.
Possible Causes:
Contaminants in the Fluid: Dirt or debris can cause the ball to jam.
Corrosion: Prolonged exposure to corrosive fluids can damage the ball.
Troubleshooting:
Clean the Valve: Disassemble the valve and clean the interior to remove debris.
Inspect for Corrosion: If corrosion is present, replace the damaged components or consider using a different material resistant to corrosion.
Possible Causes:
Air Supply Failure: In the case of an automated version, insufficient air pressure can prevent the valve from opening or closing.
Obstruction: An obstruction in the valve's actuator or internal parts can cause failure.
Troubleshooting:
Check Air Supply: Ensure that the air supply is sufficient and properly connected.
Inspect for Obstructions: Disassemble and inspect the internal components for blockages.
When shipping the Hand-Integrated Double-Interlocking Bleed Ball Valve, it is essential to follow these precautions to ensure safe delivery and minimize the risk of damage:
Valves should be packed securely in customized foam or protective wraps to prevent any impact damage during transit.
Use rigid shipping containers to protect the valve during transportation.
Include clear handling instructions on the packaging to guide logistics teams on how to handle the fragile product.
For long-distance shipments, ensure that extreme temperatures do not damage the valve or its components.
Use insulated packaging if the valve is being shipped through regions where extreme cold or heat may be an issue.
If shipping internationally, ensure that the valve complies with local regulations such as ATEX, IECEx, or UL standards, depending on the destination country.
Provide the necessary customs documentation and import/export information to avoid delays.
The Hand-Integrated Double-Interlocking Bleed Ball Valve is a vital component for fluid control in industries where safety, reliability, and precision are critical. Its double-interlocking mechanism, bleed valve functionality, and manual operation make it an ideal choice for applications in chemical processing, oil and gas, and petrochemical industries.
By following the warranty policy, maintenance guidelines, and shipping precautions, you can ensure long-lasting performance and safety in your systems. Whether you are installing the valve for manual control or as part of an automated system, this valve offers exceptional precision, reliability, and safety in high-pressure and hazardous environments.
Tel: +86 577 8699 9257
Tel: +86 135 8786 5766 /+86 137 32079372
Email: wzweiheng@163.com
Address:No. 1633, Yidaoba Road, Binhai Industrial Park, Wenzhou City, Zhejiang Province
Scan wechat
This website uses cookies to ensure you get the best experience on our website.