Blind Valve (Glasses Valve) Introduction:
Fan-shaped blind valve (also named spectacle blind valve) is a safety isolation valve for flammable, toxic gas pipeline, designed according to GB6222 safety code for industrial gas.
It adopts three-step operation: loosen the body → rotate spectacle plate → clamp for sealing.
The spectacle plate with solid blind plate and through hole realizes absolute shut-off or full bore flow.
Drive Type: Manual(F43X), Pneumatic(F643X), Electric(F943X), Electro-hydraulic(F743X)
Structure Style: Open type / Closed type
Body Material: Carbon steel, Q235 cast steel
Seal Material: NBR, EPDM, FKM fluoro rubber
Size: DN50-DN2400, Pressure PN0.6/PN1.0/PN1.6
Features:
Zero leakage mechanical isolation for maintenance safety;
Full bore design for low flow resistance;
Built-in expansion joint for pipeline displacement compensation;
Easy seal ring replacement, explosion-proof actuator optional.
Application:
Steel plant blast furnace gas, coking plant coal gas, flue gas desulfurization, chemical toxic gas pipeline, city gas pipe network maintenance isolation.Custom flange standard, explosion-proof configuration and high-temperature sealing available, 18-month quality warranty for overseas industrial projects.
Core Technical Parameters:
Nominal diameter: DN50 to DN2400 (customizable for super-large diameters)
Nominal pressure: PN0.6, PN1.0, PN1.6 (mainly for low-pressure gas pipelines)
Connection type: Flange RF connection
Applicable temperature: -20℃ to 250℃ (adjusted according to the sealing material)
Applicable medium: Blast furnace gas, coke oven gas, converter gas, natural gas, flue gas, chlorine gas, ammonia gas, dust-containing flue gas from dust removal
Sealing performance: Bidirectional rigid tight seal, almost no internal leakage, meeting the safety isolation level of blind plates for maintenance
All valves are equipped with professional export protective packaging.
With protective caps on the sealing surfaces, rust-proof treatment, and shock-absorbing material filling to ensure intact transport; the loading is secure and safe.
We can also customize packaging according to customer requirements.
Regarding transportation methods, we can provide appropriate transportation options based on the cargo requirements and the customer's timeliness requirements.
Common transportation methods include: sea freight, air freight, land freight, and express delivery.
