DN200 150LB High pressure manual sliding blind valve goggle valve
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DN200 150LB High Pressure Manual Sliding Blind Valve | Industrial Pipeline Isolation Solution
Product Overview
This DN200 150LB high pressure manual sliding blind valve is a pipeline isolation device specially engineered for medium-to-high pressure working conditions. Featuring manual worm gear handwheel drive and flange connection, it delivers exceptional sealing performance and mechanical strength. Widely used in process pipeline systems of petroleum, chemical, metallurgical, power and other industries, it enables complete media isolation and quick condition switching, providing reliable safety guarantees for pipeline maintenance and emergency shutdown.
Key Advantages
- High Pressure Compatibility: Nominal pressure of 150LB (PN20), with valve body made of high-strength cast steel/stainless steel. It boasts strong anti-deformation capacity to stably withstand medium-to-high pressure impacts, eliminating leakage risks in harsh conditions.
- Zero Leakage Sealing: Adopts a metal-elastic composite sealing structure, paired with precision-machined sealing surfaces to achieve zero media leakage, effectively preventing overflow or cross-flow and meeting strict environmental and safety requirements.
- Convenient Manual Operation: Equipped with a worm gear handwheel drive, it offers labor-saving and precise operation, enabling quick switching between open/isolated positions of the blind plate, reducing manual labor intensity and improving operational efficiency.
- Easy Maintenance Structure: Side-opening maintenance window allows quick seal replacement and internal component inspection without pipeline disassembly, significantly shortening maintenance cycles and lowering lifecycle operation costs.
- Standardized Compatibility: DN200 flange dimensions strictly comply with ANSI/ASME B16.5 standards, ensuring seamless connection with global mainstream pipeline systems for easy installation and adaptation to international projects.
- Corrosion & Wear Resistance: Valve body and seals can be customized (e.g., 304/316 stainless steel, FKM seals) to match specific media conditions, extending service life in complex working environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal Diameter | DN200 |
| Nominal Pressure | 150LB (PN20) |
| Drive Mode | Manual Worm Gear (Handwheel) |
| Connection Type | Flange (ANSI/ASME B16.5) |
| Valve Body Material | WCB/304/316 (Customizable) |
| Seal Material | Metal-Elastic Composite (Stainless Steel + NBR/FKM, etc.) |
| Applicable Media | Water, Oil, Gas, Slurry & other non-corrosive/corrosive media |
| Applicable Temperature | -29℃ ~ 425℃ (Depends on material selection) |
| Operation Function | Two-position switching (Open/Isolation) of blind plate |
Application Areas
- Petrochemical Industry: Media isolation and maintenance shutdown of process pipelines
- Metallurgical Industry: Condition switching of blast furnace gas and hot air pipelines
- Power System: Safety isolation of water supply/drainage and circulating water pipelines
- Municipal Engineering: Emergency cut-off of sewage treatment and gas pipelines
- Mining Industry: Media blocking of ore slurry and slurry pipeline
