The Weld Connection Union Ball Valve is a unique composite type pipeline control valve developed by Huitong. The single-sided extended copper welding sleeve is permanently brazed and fused with the copper pipe, eliminating electrochemical corrosion and long-term vibration leakage. The other end features a detachable union nut for easy disassembly and maintenance without cutting, perfectly integrating the long-term stability of welded pipelines with the operational convenience of union valves.
The valve body is made of thickened lead-free forged brass, equipped with chrome-plated balls and thickened Teflon double-layer seals. The fully open flow structure reduces the loss of circulating waterways, and the anti-blister valve stem is suitable for boilers and alternate water pressure fluctuations in heating systems and floor heating. The entire valve set undergoes specialized quality control of both welding and union structures. It covers multiple pipe diameters and is available for commercial and home decoration HVAC copper pipe systems, serving as a differentiated engineering valve that caters to both initial construction and subsequent maintenance needs.
|
Product Specifications |
L |
d1 |
d2 |
d3 |
Pipe Thread |
W |
H |
|
|
DN |
Size |
|||||||
|
15 |
16mm–1/2F |
77 |
15 |
20 |
10 |
G/PT/NPT |
56.75 |
52.75 |
|
20 |
20mm–3/4F |
81 |
20 |
25 |
15 |
G/PT/NPT |
56.75 |
55.75 |
|
Product Specifications |
L |
d1 |
d2 |
d3 |
Pipe Thread |
W |
H |
|
|
DN |
Size |
|||||||
|
15 |
16mm–1/2F |
77 |
15 |
20 |
10 |
G/PT/NPT |
50 |
49.5 |
|
20 |
20mm–3/4F |
81 |
20 |
25 |
15 |
G/PT/NPT |
50 |
52 |
The valve body is extended and integrated on one side, and the copper welding end can be directly brazed with the standard copper pipe. The copper and brass materials are highly compatible, and there is no gap after fusion, completely avoiding electrochemical corrosion and water leakage problems caused by long-term high-temperature water circulation. After forming, the pipeline has strong overall performance and excellent vibration resistance.
The other side is equipped with a detachable union thread structure. During later valve replacement, pipeline cleaning, and equipment maintenance, only the union nut needs to be loosened to separate the valve body, without cutting or discarding the original copper pipe. This significantly reduces the consumption of pipe materials and on-site construction time, and lowers the long-term operation and maintenance costs of the HVAC project.
During the initial construction, the welding end is used to complete the pipeline fixation, ensuring long-term operation and sealing stability. In the later maintenance, the union structure is used to achieve quick disassembly and assembly, which not only solves the high maintenance cost of fully welded pipelines but also compensates for the shortcomings of pure union ball valves that are not resistant to long-term high-temperature vibrations. It is suitable for long-term HVAC circulation systems.
The valve body of Weld Connection Union Ball Valve is produced by hot forging process. The wall thickness of the valve is uniform, and its pressure-bearing and crack-resistance ability is superior to that of ordinary die-cast valve bodies. The lead-free material does not release heavy metals, and it is suitable for household water purification and commercial heating water supply. It is not prone to scale formation, rusting or perforation even under long-term high-temperature water flow.
The surface of the ball is precisely chrome-plated and polished, making it wear-resistant and anti-scale. The double-layer thickened Teflon valve seat fits tightly on both sides and can maintain zero leakage regardless of the forward or reverse cold and hot water flow impact. It can withstand the alternating water pressure changes caused by the temperature differences between the heating system and the boiler throughout the day.
A limit locking structure is added at the bottom of the valve rod to reinforce it against the instantaneous high pressure generated during boiler start-stop or pump switching. This prevents the valve rod from popping out and the high-temperature medium from splashing out, thereby enhancing the overall operational safety coefficient of the HVAC equipment.
1. Uninterrupted full-diameter flow channels: The valve body has no throttling protrusions inside, allowing smooth water flow without any obstruction. This prevents problems such as uneven heating in floor heating systems and decreased efficiency in central air conditioning heat exchange. It fully retains the design flow of the pipeline, saving equipment energy consumption.
2. Extended 90° smooth operation handle: The long handle-type opening and closing handle has a gentle operating torque. It only requires a 90° rotation to complete the full opening and full closing switch. Even when installed in the narrow compartments of floor heating boxes or air conditioning machine rooms, it can be easily moved without any operation jamming or obstruction.
3. Welded-formed pipeline appearance is neat: Single-side welding has no extra exposed joints. The pipeline surface is smooth and flat, with no crevices for dust and scale accumulation. This reduces the frequency of pipeline cleaning and is suitable for long-term enclosed operation environments in machine rooms and ceilings.
1. Pre-spectral screening of dual-metal raw materials to determine the basic properties of the substrate's temperature resistance and anti-corrosion: All raw materials for brass valve bodies and copper-clad welding sleeves undergo spectral testing upon entry, verifying the lead-free content, high-temperature resistance, anti-zinc loss, and anti-corrosion indicators. This ensures that material long-term high-temperature failure risks are avoided from the source.
2. General three-level basic tests for finished products, ensuring all basic performance meets standards for storage: Each Weld Connection Union Ball Valve is fully tested through shell water pressure resistance, bubble-type leak detection, and ten-thousand times durability test. Sealing leakage and switch jamming defects are screened out.
3. Differential dual-specificity verification, targeted troubleshooting for two types of structural-specific faults: Penetrant flaw detection is conducted for the copper-clad welding ends to check for weld porosity, incomplete welding, and micro cracks; bite accuracy and repeated assembly locking tests are performed for the union threads to prevent loosening of the union and thread slippage problems, and simultaneously control the quality of the welding end and the union end.
4. Full batch coding traceability management, complete engineering qualification packages delivered: Each product is engraved with an independent batch code. All process data from forging, welding, processing, and testing are permanently archived; for each shipment, material spectral reports, CE compliance certificates, and finished product flaw detection reports can be provided simultaneously, meeting all review standards for HVAC project bidding, overseas equipment customs clearance, and project acceptance.
The professional technical team can provide one-on-one dedicated solutions for issues such as copper tube brazing temperature control, assembly force adjustment of union nuts, pressure testing of cold and hot pipelines, and troubleshooting of welds and union leaks. This shortens the on-site commissioning cycle.
Offer multilingual online consultation for overseas and domestic purchasers of central air conditioning and boiler heating projects. Quickly address assembly questions, compatibility issues, and reporting of after-sales faults, regardless of time differences.
For batch centralized heating and commercial central air conditioning equipment orders, customized selection and matching plans can be provided based on pipeline layout. Long-term stable supply of original factory union nuts, sealing valve seats, and copper welding sleeves replacement parts ensures the supply of spare parts for project maintenance over many years.
All union-welded ball valves are uniformly provided with a 12-month warranty. In normal heating and cooling circulation conditions, issues such as weld cracking, union leakage, and sealing failure caused by raw materials and production processes can be repaired and replacement parts provided for free.
This system is suitable for connecting the main unit and the end heat exchange branch circuits. The welding end is fixed to the main pipe of the machine room, and the threaded end is connected to the end equipment. In the future, when the unit is maintained, there is no need to cut the main pipe, significantly reducing the downtime for central air conditioning maintenance.
The main pipe of the building adopts welding technology to ensure stable heating throughout the year. The branch circuits for each household are equipped with threaded structures. When renovating or repairing the individual household pipelines, they can be disassembled and reassembled separately, without affecting the heating circulation of the entire building.
This is a special pipe system for industrial and commercial hot water boilers. It can withstand the water pressure fluctuations during boiler start-up and shutdown. The welding end is fitted to the boiler body for installation, and the threaded structure is convenient for regular boiler cleaning, maintenance, and replacement of filters and pipelines.
This system is used for centralized water purification and circulation in shopping malls and hotels. The valve body is made of lead-free forging, which complies with drinking water safety standards. The welded pipe system is neat and hygienic, and the threaded structure is convenient for later maintenance and replacement of water purification filters and pipelines.
A: If a fully welded ball valve breaks down, the entire section of copper pipe must be cut off and re-welded. This process involves high costs for materials and labor, as well as a long downtime. This product's union end allows the valve body to be disassembled without damaging it, while retaining the original welded copper pipe. By simply replacing the valve, the pipeline operation can be restored, significantly reducing the material and time losses for later maintenance in HVAC projects. It is suitable for commercial and centralized heating projects that require regular maintenance.
A: The Weld Connection Union Ball Valve is equipped with a thickened and wear-resistant PTFE sealing gasket. The standardized flanged thread disassembly tolerance is reasonable, and the sealing performance will not significantly decline within 10 standard disassemblies. If there is slight leakage after repeated disassembly, only the original factory-provided sealing gasket needs to be replaced to restore zero leakage. There is no need to replace the entire valve.
A: The extended handle extends outward to cover the operation area. The valve body main body can completely enclose the insulation cotton, with only the handle exposed. This will not disrupt the insulation structure of the pipeline. The 90° short-stroke toggle operation allows for easy opening and closing in a narrow and sealed box, with no obstruction and effortless operation.
Address
Bingang Industrial Park, Ganjiang Town, Yuhuan City, Zhejiang Province, China
