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All about Blind Flanges: Type, Uses, Specifications and How to Choose Properly. Blind flanges are flanges that cover or cap off open pipe ends. The most basic style is a plain blind flange, which serves as a flat plate with bolt holes to seal a line opening. Spectacle blinds feature a cutout viewport section that allows visual inspection of the pipe interior without removing the flange. Line blinds bolt directly over sections of pipe instead of pipe ends and are often used for in-line isolation during maintenance or repairs. All blind flanges are rated for specific pressure classes like 150, 300, 600 in accordance with standards such as ASME B16.5. Material types commonly include carbon steel, alloy steels for high temp/pressure service, and stainless grades. Gaskets are required and material must match line service conditions such as temperature, pressure and media compatibility. Typical gasket styles include spiral wound, kammprofile and volumetric compensated designs. Proper installation of blind flanges is critical for safety and performance. The pipe rim must be cleaned and gasket lubrication applied before bolting down. Bolts must be tightened using a star pattern and calibrated torque wrench to ensure uniform compression of the gasket. Reassembly of removed blind flanges also demands meticulous cleaning and lubrication of all wetted surfaces. Blind flanges carry additional safety requirements compared to pipe flanges that remain open-ended. An installed blind flange prevents process leaks but also inhibits venting if downstream pressure builds up due to isolation. System lockout/tagout procedures must drain, depressurize and vent lines both above and below the blind flange prior to any breaks in containment. Periodic inspection and maintenance keeps blind flanged systems in good working order. Gaskets and bolting require replacement if damaged or degraded over time. Blind flanges themselves may need refurbishment such as local surface grinding to restore proper sealing after years of service. Improperly installed or deteriorated blind connections can become high integrity pressure equipment integrity issues and even safety hazards if unaddressed. Subscribe to our channel now to stay updated with our latest videos and never miss out on the fascinating stories behind everyday objects. Remember, the key to a successful system lies in the connections we make! / @piping2024 contact email: [email protected] piping pipe spool removable pipe spool non-removable pipe spool Flange Blind Flange Spectacle Blind Flange Line Blind Paddle and Spacer test hydrostatic test pressure gauge weld welding welder welding position welding orientation harmony Electrode piping pipe Elbow 5G position Fittings pipe joining pipe connection joint connections Lap joint butt weld socket joint threaded joint special joints mechanical engineering piping & pipeline engineering nut and bolt MTO Material Take Off Bill of Materials сваривать сварка гармония Электрод трубопровод трубка соединение труб соединение труб стыковая сварка раструбное соединение резьбовое соединение специальные суставы машиностроение Все о глухих фланцах типы применение спецификации и как правильно выбрать Ko‘r-ko‘rona flangalar haqida hamma narsa turlari qo‘llanilishi texnik xususiyatlari va qanday to‘g‘ri tanlash Kör flanşlar hakkında her şey türleri kullanımı spesifikasyonları ve nasıl doğru seçilir অন্ধ ফ্ল্যাঞ্জ সম্পর্কে সবকিছু প্রকারভেদ ব্যবহার স্পেসিফিকেশন এবং কীভাবে সঠিকভাবে নির্বাচন করবেন Alles über Blindflansche Typen Anwendungen Spezifikationen und wie man richtig wählt Tutto sui flange cieche tipi usi specifiche e come scegliere correttamente Tudo sobre flanges cegos tipos usos especificações e como escolher corretamente ब्लाइंड फ्लैंज के बारे में सब कुछ प्रकार उपयोग विनिर्देश और सही तरीके से कैसे चुनें Соқыр фланецтер туралы барлығы түрлері қолданылуы техникалық сипаттамалары және қалай дұрыс таңдау Все про глухі фланці типи використання специфікації та як правильно вибрати Блинд флангалар жөнүндө баары түрлөрү колдонулушу мүнөздөмөлөрү жана кантип туура тандоо Semua tentang flange buta jenis kegunaan spesifikasi dan cara memilih dengan benar بلائنڈ فلینجز کے بارے میں سب کچھ اقسام استعمال تصریحات اور صحیح طریقے سے انتخاب کیسے کریں 블라인드 플랜지에 대한 모든 것 유형 용도 사양 및 올바르게 선택하는 방법 Все о слепых фланцах типы применение спецификации и как правильно выбрать Wszystko o kołnierzach ślepych typy zastosowanie specyfikacje i jak prawidłowo wybrać Yote kuhusu flanges kipofu aina matumizi vipimo na jinsi ya kuchagua ipasavyo Song: Disfigure - Blank [NCS Release] Music provided by NoCopyrightSounds Free Download/Stream: http://ncs.io/blank Watch: • Disfigure - Blank | Melodic Dubstep | NCS ... TIMESTAMPS 00:16 Types of Blind Flanges and their applications 00:42 Blind Flange 02:09 Spectacle Blind Flange 02:50 Line Blind Flange 03:27 ASME B16.48 Standard 03:55 How to Choose Blind Flange according to ASME B16.5 (Pressure Temperature Rating)