Superior Ductile Iron Solution Introduction
Flanged-end butterfly valve featuring a fully lined soft seal and concentric disc design, engineered for reliable shut-off and modulating control in water supply, industrial process, and HVAC systems.
Product Features
Flanged connection design provides superior structural strength, making it suitable for main pipeline sections requiring frequent disassembly or high reliability. The soft-sealing structure uses an integrally vulcanized liner or replaceable seat ring to achieve bidirectional zero leakage. The disc profile is optimized for minimum flow resistance, and the stem adopts a double-shaft or taper pin connection to prevent accidental detachment. Full coating of the valve body and internal components with corrosion-resistant materials extends service life in harsh environments. The flange connection also eliminates the need for additional alignment fixtures during installation, reducing on-site workload.
Typical Applications
Municipal water transmission main lines and distribution networks
Urban wastewater treatment plant inlet and outlet sections
Industrial circulating cooling water systems
Desalination plants and marine engineering pipelines
Power plant auxiliary cooling systems
Food and beverage processing facilities requiring sanitary connections
Product Parameters Table
|
Parameter |
Specification |
|
Size Range |
DN50 to DN1200 |
|
Pressure Rating |
PN10, PN16 |
|
Body Material |
Ductile Iron |
|
Seal Material |
EPDM, NBR |
|
Operation Type |
Manual, Gear, Electric |
|
Temperature Range |
-10°C to 120°C |
|
Connection Type |
Flanged |
|
Standards Met |
ISO 5752, ANSI B16.10 |
|
Valve Weight |
Varies by size |
|
Actuator Options |
Multiple choices |
Production Process
We select top materials. Ductile iron is primary. Casting shapes the body. Machining refines details. Assembly puts parts together. Seals are added carefully. Testing checks function. Painting prevents rust. Final inspection approves.
Quality Control
Inspect all raw materials. Test every valve for pressure. Ensure no leaks exist. Check dimensions accurately. Verify performance standards. Maintain full records. Use advanced equipment. Follow strict protocols.
Installation Steps
Turn off pipeline flow. Clean the connection area. Position the valve correctly. Align flanges properly. Secure with bolts tightly. Connect actuator if needed. Test for smooth operation. Check for any leaks. Enjoy reliable service.
Product Advantages
Durable construction lasts long. Easy installation saves effort. Low maintenance cuts costs. Leak-proof design ensures safety. Versatile use fits many needs. Efficient flow control works well. Competitive pricing offers value. Quick delivery meets deadlines.
Materials
Valve Body: Ductile iron GJS-400-15 (ASTM A536 65-45-12) / Cast steel WCB optional
Disc: Ductile iron with nylon coating / SS304 / SS316 / Duplex stainless steel
Seat: EPDM, NBR, Viton (FKM), or PTFE-lined for enhanced chemical resistance
Stem: SS420, SS431, SS304, SS316
Flange Gasket Surface: Flat or raised face as per flange standard
Standards Compliance
Design Standard: EN 593, API 609 Category A, MSS SP-67
Face-to-Face Dimension: EN 558 Series 20, API 609 Table 1
Flange Dimension: EN 1092-2, ANSI B16.1 Class 125, ANSI B16.5 Class 150, AS 4087
Performance Testing & Quality Assurance
Each valve undergoes a complete factory testing procedure prior to shipment. Shell strength test and seat sealing test are conducted in accordance with EN 12266 or API 598, with zero visible leakage allowed at the rated pressure. For bidirectional sealing valves, tests are performed in both flow directions. All test records are retained and traceable by serial number. Third-party inspection services, such as SGS, BV, or DNV, can be arranged upon customer request. Factory witness testing is also available for project-critical applications.
Conclusion
Pick this butterfly valve today. It boosts your system. Order from us now. Experience top quality service.
