Manual sector blind valve
The Manual Sector Blind Valve is a reliable pipeline isolation device designed for safe and efficient flow shut-off in industrial piping systems. Also known as a spectacle blind valve or line blind valve, it is manually operated to completely isolate pipelines during maintenance, inspection, and emergency shutdown operations.
Featuring a sector plate structure with clear open and closed positions, this valve provides a visible and reliable method for pipeline isolation. Compared with traditional blind plates, the manual sector blind valve allows faster operation, improved safety, and easier maintenance without removing pipeline components.
Manufactured with high-quality materials and precision processing technology, the valve offers excellent sealing performance, corrosion resistance, and long service life. It is widely used in oil & gas, chemical, petrochemical, power generation, and industrial pipeline systems where positive isolation is required.
Manual sector blind valve
We provide professional OEM and ODM manufacturing services to meet different industrial pipeline requirements.
Our Manual Sector Blind Valves are manufactured under strict quality management systems and comply with international valve industry standards.
Each valve is tested to ensure safe isolation, reliable sealing, and long-term operational performance.
Parameter Specifications
| Item | Specification |
|---|---|
| Product Name | Manual Sector Blind Valve |
| Alternative Name | Manual Spectacle Blind Valve / Line Blind Valve |
| Valve Type | Pipeline Isolation Valve |
| Operation Method | Manual Operation |
| Application Medium | Gas, Oil, Water, Chemical Fluids, Industrial Media |
| Valve Function | Positive Isolation and Pipeline Shut-Off |
| Structure Type | Sector Plate / Spectacle Blind Design |
| Nominal Size | DN50–DN2000 (Customized Available) |
| Connection Type | Flanged Connection |
| Flange Standard | ANSI / DIN / JIS / GB |
| Valve Body Material | Carbon Steel / Stainless Steel / Alloy Steel |
| Blind Plate Material | Stainless Steel / Carbon Steel |
| Sealing Material | PTFE / Graphite / Metal Seal / Customized |
| Working Pressure | PN10–PN420 / Class 150–2500 (Customized) |
| Operating Temperature | -196℃ to +500℃ (Customized Available) |
| Operation Method | Handwheel / Gear Operation / Manual Handle |
| Installation Position | Horizontal / Vertical Pipeline Installation |
| Leakage Performance | Zero Leakage Isolation Design |
| Surface Treatment | Anti-Corrosion Coating / Polishing / Customized |
| Maintenance | Easy Pipeline Isolation and Maintenance |
| Service Life | Long Service Life Design |
| Certification | ISO, CE, API, EN Standards |
| OEM Service | Size, Material, Structure, Logo, Packaging Customization |
Industry Applications
The Manual Sector Blind Valve is widely used in industries requiring safe pipeline isolation and maintenance protection.
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
RELATED PRODUCTS
