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China Suppliers Ductile Iron Split Body Full PTFE Butterfly Valve - Factory Direct, DN40-DN2000, PN6-PN16
| Valve Type: | Flange butterfly valve | Structure: | Concentric |
| Standard: | EN593 | Workmanship: | Investment casting |
| Sealing direction: | Bidirectional | Sealing grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Handle/Lever |
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Thick shell, heavy-type
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High purity rubber, high wear resistance
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Zero leakage standard
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Various size in stock
Characteristics
The split type valve body is fastened with high-strength bolts, and the valve body can be disassembled without dismantling the pipeline. The internal components such as the valve plate, valve seat, and lining can be directly removed, and the maintenance time is reduced by more than 60% compared to the integral butterfly valve. It is especially suitable for online maintenance of narrow spaces or large-diameter pipelines. The disassembled surface is precision machined and equipped with special sealing gaskets. After reassembly, the pressure bearing sealing performance of the valve body does not deteriorate, and it can maintain stable operation under nominal pressure for a long time.
Advantages
1. Lower cost of lining maintenance and replacement
If the PTFE lining shows local wear and aging, the valve body can be disassembled separately to replace the lining layer or damaged sealing components, without the need to replace the valve as a whole; Compared to the drawbacks of integral butterfly valves where the lining fails and the entire valve is scrapped, it significantly reduces long-term operating costs and is particularly suitable for high-frequency maintenance needs in highly corrosive conditions such as chemical and environmental protection.
2. Dual improvement of structural strength and sealing reliability
The disassembly surface of the valve body is precision machined and equipped with high-performance sealing gaskets, which are tightened with bolts to ensure that the overall pressure sealing performance of the valve body is not lower than that of the integral structure; At the same time, the combination of symmetrical valve plate and PTFE soft seal still maintains ANSI Class VI zero leakage capability, and the seal is stable and leak free under bidirectional medium transportation conditions.
Packing
Standard export wooden case packaging
Application Scenarios
It serves a broad range of critical applications: in the chemical industry, it is deployed for large-diameter acid-alkali pipelines, chlor-alkali production lines and pesticide intermediate synthesis systems; in environmental engineering, it is a staple for large-scale wastewater treatment plants.
Frequently Asked Questions
What are the primary specifications of this flange butterfly valve?
This is a concentric flange butterfly valve designed to EN593 standards. It features high-quality investment casting workmanship, supports bidirectional sealing direction with zero leakage, and operates within a temperature range of -20°C < T < 120°C via a handle or lever.
How does the split type valve body reduce maintenance time?
The split type valve body is fastened with high-strength bolts, allowing it to be disassembled directly without dismantling the pipeline. Internal components like the valve plate, seat, and lining can be accessed and removed quickly, reducing maintenance time by more than 60% compared to integral valves.
Can the PTFE lining be replaced separately to save costs?
Yes. If the PTFE lining shows local wear or aging, the valve body can be disassembled separately to replace only the lining layer or damaged sealing components. This avoids having to scrap the entire valve, significantly lowering long-term operating costs.
What ensures the sealing performance after reassembly?
The disassembled surface of the valve body is precision machined and equipped with special high-performance sealing gaskets. When tightened with bolts, it maintains stable pressure-bearing sealing performance under nominal pressure and continues to achieve ANSI Class VI zero leakage.
Where is this butterfly valve typically applied?
It is widely used in the chemical industry for large-diameter acid-alkali pipelines, chlor-alkali production lines, and pesticide intermediate synthesis systems, as well as in environmental engineering for large-scale wastewater treatment plants.
What type of packaging is used for shipment?
The products are safely packed and shipped using standard export wooden cases to ensure safe delivery and protect the valves during transit.