Welcome! ZZJG VALVE Factory Can Offer High Quality Line Blind Valves And Goggle Valves.
Spectacle blind flange, or figure-8 blind flange, is a figure-eight-shaped component with a solid blind section and a perforated section, used to alternately block or allow pipeline flow by rotating its position. It's materials like carbon steel or stainless steel to suit media conditions, widely used in industries requiring frequent flow switching, such as oil, gas, and chemical processing, for efficient system control.
Pressure: Class150-2500
Flange Facing: FF / RF / RTJ, etc
Surface: Oiled / hot dip galvanized, Pickling white, etc
Materials: Carbon Steel, Stainless Steel, Special Material
Standard: ANSI, API, DIN, EAC, JIS, CE, ISO, EN, GB
Shaped like a figure-8 with a solid blind section and a perforated opening, it switches between blocking and allowing flow by rotation.
Features bolt holes around its perimeter, securing to pipe flanges with gaskets for reliable sealing in both positions.
Constructed from carbon steel, stainless steel, etc., to withstand varying media, pressure, and temperature conditions.
Widely used in oil, chemical, and gas industries for frequent flow switching, eliminating the need for disassembly during operation.
The professional 3D software for structural analysis, material selection and process planning to virtually simulate the reliability of materials under different temperatures, mediums andpressures, and finally validate them through finite element analysis to provide customers with safe and reliable products.
From raw materials to production, sealing performance testing, strength testing, functional testing, to surface quality testing and packaging and shipping, the whole process is strictly in accordance with API standards and support third-party independent organizations to test and certify our products.
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