Air Brake System Condensation Valve

Xiamen Jiedeng JD-DDPS-004, an outstanding Chinese manufacturer, produces the air brake system condensation valve using standardized assembly lines. Featuring triple-seal protection at critical components and professional automated AB adhesive potting technology, the product adheres to a three-tier quality control system throughout the entire manufacturing process. With excellent sealing reliability and consistent assembly, it ensures long-term stable performance under high pressure and wide temperature conditions, making it a premium choice for commercial vehicle air brake systems.

Modular Assembly Line

JD-DDPS-004 Solenoid drain valve adopts a fully automatic modular assembly line production mode, specifically customized for the drainage valve of commercial vehicle air tanks. The overall production process is divided into 12 independent standard steps such as disassembling the pilot head, coil pressing, high-precision filter installation, sealing glue application, valve body calibration, and pressure testing.

The production process is highly specialized and standardized. Each workstation strictly adheres to a standard working time of 15-30 seconds per piece. The stable production capacity of the workshop can reach 200 pieces per hour, with a daily production capacity of over 4,800 pieces. This can meet the needs of large-scale export orders, fleet collective purchases, and batch replacement after-sales services.

All workstations are equipped with custom-made fixtures, positioning jigs and torque calibration equipment, completely eliminating cross-operation errors such as misalignment, loosening and assembly deviations in manual component assembly.

At the same time, the products are equipped with a one-product-one-barcode quality traceability system. Each product is bound with a unique production batch, workstation, operator and inspection data, allowing for full traceability.

Compared to the traditional scattered assembly process, this model controls the product assembly consistency error within ±0.02mm, and the product pass rate is stable at over 99.8%.

The production stability and product uniformity far exceed the ordinary industry processes, laying the foundation for the products to be compatible with various heavy trucks, buses, and construction machinery air tanks from the production source.

Precision sealing process system

In response to the harsh working conditions of the air tank, such as high-pressure water accumulation, large temperature fluctuations, and frequent opening and closing, this Solenoid controlled drain valve has established a triple precision sealing protection system.

All process parameters are quantitatively controllable, effectively preventing water leakage, air leakage, and sealing failure. The core process standards strictly follow the industry heavy-duty component standards, and all parameters have passed third-party working condition simulation tests, with complete test reports on file.

1. Threaded locking seal: The threaded parts of the valve body and valve core are evenly coated with a special high-temperature resistant locking agent. The coating thickness is strictly controlled within 0.08-0.12mm. After curing, it can withstand an 8-bar high-pressure impact and prevent thread loosening and leakage.

2. Motion pair lubrication protection: The moving contact surfaces of the valve body are coated with long-lasting and anti-aging lubricating grease, suitable for an extremely wide temperature range of -40℃ to +85℃. This ensures smooth opening and closing of the valve core without any jamming and prevents low-temperature sticking or high-temperature dryness failure.

3. High-precision radial seal: The key sealing grooves are processed by precision milling. The tolerance of the groove body is controlled within ±0.01mm. Combined with a custom fluorine-based O-ring, the stretching deformation rate of the O-ring is strictly controlled within the optimal range of 15%-20%, avoiding excessive stretching aging and relaxation leakage.

After third-party durability testing, this sealing system can achieve 100,000 high-frequency opening and closing without leakage. Under the normal working pressure of 0.3 - 1.0 MPa for storage tanks, it has no air leakage or water leakage issues during long-term operation.

It perfectly suits various working conditions such as trucks, buses, construction machinery, and air compressor storage tanks. The product's service life is over 60% higher than that of ordinary drainage valves.

Automated precise sealing technology

The sealing process of the product coil and lead holes adopts an industrial-grade fully automatic AB glue encapsulation equipment throughout the process. It eliminates the uncertainty of manual encapsulation and establishes a standardized and data-based encapsulation procedure to ensure the electrical insulation, waterproof and dustproof performance of the product.

All process parameters are traceable and verifiable, and an electrical performance test report is provided upon leaving the factory.

Core standardized process

Firstly, a 5-minute, 0.1MPa vacuum degassing treatment is carried out to completely eliminate micro-bubbles within the gel, preventing cracking, water seepage and leakage of electricity in the later high-temperature and high-pressure environment.

Secondly, the quantitative and precise gel dispensing mode is activated, with the dispensing volume error controlled within ±0.5g, ensuring a full and seamless sealing without any gaps or overflow of the gel, and a 100% coverage of the sealing.

The equipment is equipped with an intelligent anti-dry-burning and waste gel removal mechanism, which automatically cleans the ineffective gel upon shutdown and restart, eliminating residual gel that may affect the sealing effect.

At the same time, it is also equipped with a fully automatic cleaning and smart tannin water replenishment system, with no human intervention throughout the process.

This automated encapsulation process enables the product to achieve an IP67 protection level, which can completely prevent the intrusion of rain, water accumulation, and dust. The insulation resistance of the coil remains stable at ≥100MΩ, effectively resolving the common problems of leakage, short circuit, and water ingress damage in electric control drainage valves.

It is suitable for complex outdoor, humid, and dusty vehicle working conditions, and its electrical safety stability far exceeds that of ordinary products in the industry.

Full-process quality control

The entire vehicle drain valve series has established a pre-event, in-event and post-event closed-loop three-level quality control system. It is equipped with complete testing equipment, operation standards and test reports. Each product undergoes 16 comprehensive tests before leaving the factory. There are no defective products ever leaving the factory. It has a complete quality compliance file, which can support foreign trade quality inspection, customer factory inspection, and batch inspection.

1. Pre-delivery first-piece verification

Before each batch of production, quality inspectors will check the material specifications, valve body dimensions, coil parameters, and sealing accessories. The first piece will undergo full-size measurement, pressure testing, and power-on testing. Only after confirming there are no errors can mass production proceed, thus eliminating batch-related quality issues.

2. Self-inspection at workstation

After each workstation operator completes the assembly, they will check the part clearance, glue application status, and O-ring installation accuracy one by one. Any deformed, misaligned, or defective products will be automatically eliminated.

3. Final inspection and transfer

After the finished product is completed, it will undergo high-pressure gas tightness testing, power-on opening and closing testing, and waterproof testing. These tests simulate real vehicle operating conditions for detection.

All defective products are uniformly numbered, isolated for storage, and registered for traceability, forming a closed-loop for problem rectification. After the entire quality control system is implemented, the defective rate of products at the factory is less than 0.2%.

Through third-party authoritative testing, all indicators such as pressure tolerance, opening and closing performance, sealing durability, and electrical safety of the products have met the standards, and factory inspection reports, performance test reports, IP protection level reports can be provided, meeting the entry standards for overseas markets.

Core Specifications of the Product

Product Selection Suggestions

1. Voltage selection

For small light trucks and household commercial vehicles, the 12V version is preferred; for heavy trucks, long-distance freight vehicles, large buses, and construction machinery, the 24V version is uniformly applicable to avoid voltage mismatch and prevent malfunction during startup and shutdown.

2. Operating condition selection

In areas with heavy rain, high humidity, and low temperatures, the model with IP67 waterproof and low-temperature resistance features should be selected to avoid water accumulation, ice formation, and dust intrusion that could damage the valve body.

3. Replacement selection

It is compatible with the majority of original factory air tank installation holes of commercial vehicles, eliminating the need for pipeline modification and allowing for direct replacement of the old manual drainage valve and ordinary simple electric control drainage valve. It is also compatible with mainstream vehicle models on the market.

4. Batch selection

Fleet, repair shops, and foreign trade purchasers can mix batch 12V/24V specifications. Customized batch logos and packaging are supported, and it is suitable for overseas brand labeling, channel distribution, and other requirements.

Frequently Asked Questions about Product Usage

Q1: Why can't the electronically controlled timed drain valve drain water automatically after installation?

A: First, check if the voltage is compatible and the wiring is secure; second, check if the pressure of the air tank reaches the 0.3MPa working threshold. If it has not been used for a long time, you can slightly clean the impurities in the valve body filter. After a normal installation and matching, it will automatically drain water at regular intervals.

Q2: Is it normal if there is a slight air leakage during the use of the product?

A: Under normal conditions, there should be no air leakage at all. If there is air leakage, it is usually due to misalignment of the O-ring or loosening of the pipeline. Simply re-tighten the pipeline and check the sealing parts to solve the problem. The sealing performance of the factory-provided products has been tested under high pressure and there are no quality issues.

Q3: Will it freeze and get stuck in extremely cold winters?

A: The product is designed to be compatible with -40℃ low-temperature environments. The seals and lubricants are made of materials resistant to low temperatures, and the valve body is not designed to retain water. Under normal operating conditions, it will not freeze and get stuck. It is suitable for long-term use in northern and high-altitude areas.

Q4: How long is the product's lifespan? Does it offer after-sales warranty?

A: Under normal vehicle usage conditions, the lifespan can reach 3 to 5 years. All models come with standard export warranty. If it is not damaged by human factors, it can be replaced through after-sales service. Technical support services will be provided throughout the process.

Q5: Do you support batch customization and cross-border OEM?

A: We support large-scale order production, custom logo design for products, customization of export standard packaging, and can provide a complete set of test reports and qualification documents to meet the sales requirements on overseas platforms and supply needs for offline channels.