Spectacle Blind Flange Manufacturer
Best Spectacle Blind Flange Manufacturer in India since 1971.
Table of Contents
Teshi Group: Leading Manufacturer, Stockist, Supplier, and Exporter of Spectacle Blind Flange in India.
Teshi Group stands as a premier manufacturer, stockist, supplier, and exporter of Spectacle Blind Flanges in India, renowned for delivering exceptional quality and reliability across various industries. Our Spectacle Blind Flanges are designed with precision and engineered to meet stringent international standards, ensuring top-notch performance in applications that require flow control and system isolation. Utilizing high-grade materials such as stainless steel, carbon steel, and alloy steels, our flanges provide excellent durability and corrosion resistance, making them ideal for industries such as oil and gas, petrochemical, power generation, and marine. At Teshi Group, we prioritize quality and adherence to ISO 9001:2015 certification requirements, ensuring each flange undergoes rigorous testing to meet customer expectations. With a dedicated team of experts and an advanced manufacturing setup, we provide tailor-made solutions that meet diverse industrial needs, including custom sizes and specifications. Teshi Group’s extensive distribution network enables us to fulfill domestic and international orders swiftly and efficiently, reinforcing our commitment to delivering high-quality Spectacle Blind Flanges and building long-term partnerships worldwide.
Teshi Group is an ISO certified Spectacle Blind flange manufacturer & distributor in India.
About Spectacle Blind Flange :-
Spectacle Blind Flanges are specialized flanges used to isolate or block the flow of fluids in piping systems, providing a simple and reliable solution for maintenance, shutdown, or emergency isolation in high-pressure applications. These flanges are typically designed with two circular discs (one solid and one perforated) connected by a solid bridge or “spacer.” The design allows for quick switching between an open or closed configuration, making them ideal for systems that require regular isolation or maintenance without needing to remove the flange completely.
The Spectacle Blind Flange works by placing the solid disc (blind) in line with the pipe to block the flow of fluid, while the perforated disc allows flow when the system is in operation. The flange’s spacer bridge ensures the discs are aligned correctly, and the system can easily transition between the two states by simply rotating or flipping the flange. This makes spectacle blinds particularly useful in applications where the pipeline must be isolated temporarily for maintenance or inspection purposes.
These flanges are typically used in industries like oil and gas, chemical processing, power generation, and petrochemical industries, where the need for operational flexibility and quick isolation is paramount. They are manufactured in various materials, including carbon steel, stainless steel, and alloy steels, to withstand harsh environmental conditions, including high temperatures and corrosive substances. Spectacle Blind Flanges are made in accordance with industry standards such as ASME B16.5 and API 6A, ensuring that they meet the rigorous demands of critical piping systems.
The main advantages of Spectacle Blind Flanges include ease of installation, the ability to isolate a section of a pipeline quickly, and the durability to perform in high-pressure and high-temperature environments. They provide a highly effective and cost-efficient solution for controlling fluid flow in industrial systems, making them indispensable for pipeline maintenance and operational safety.
Dimensions of Spectacle Blind Flange
Standard Specification of Spectacle Blind Flange
Standard Specifications |
Dimensions
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ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
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Size
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1/2" (15 NB) to 48" (1200NB)
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Class
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150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
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DIN
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DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636,DIN 2637, DIN 2638, DIN 2673
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BS
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BS 4504 , BS 4504, BS 1560, BS 10
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PN
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PN6, PN10, PN16, PN25, PN40
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Flange Face Type
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Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
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Material & Grades of Spectacle Blind Flange
Material & Grades |
Stainless Steel Spectacle Blind Flange
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ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
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Duplex & Super Duplex Steel Spectacle Blind Flange
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ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
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Carbon Steel Spectacle Blind Flanges
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ASTM / ASME A/SA 105 ASTM / ASME A 350, ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
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Low Temperature Carbon Steel Spectacle Blind Flanges
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ASTM A350, LF2, and LF3
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Alloy Steel Spectacle Blind Flanges
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ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
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Copper Alloy Steel Spectacle Blind Flanges
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ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
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Nickel Alloy Spectacle Blind Flanges
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ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020)
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Application Of Spectacle Blind Flange
Sl |
Application |
1
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Used in hydraulic systems for high-pressure connections in compact spaces, common in machinery and automotive applications.
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2
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Applied in pneumatic systems to manage airflow in compressed air setups, ideal for tight installations.
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3
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Found in industrial equipment for stable connections where regular maintenance is needed, like manufacturing and heavy machinery.
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4
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Used in water treatment plants to provide leak-proof, stable connections in moderate to high-pressure piping systems.
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5
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Suitable for chemical processing plants where space is limited, supporting secure chemical transport systems.
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6
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Common in the marine and shipbuilding industry for hydraulic and water piping on ships, optimizing limited space.
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7
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Used in food and beverage industry sanitary systems for easy cleaning and maintenance in compact piping layouts.
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8
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Applied in the pharmaceutical industry where easy disassembly is needed for hygiene, in confined processing equipment setups.
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Teshi Group Is A Leading Suppliers Of Spectacle Blind Flanges In India
We supply Spectacle Blind flange to Agra, Ahmedabad, Ajmer, Aligarh, Allahabad, Ambattur, Amravati, Amritsar, Asansol, Aurangabad, Bangalore, Bareilly, Belgaum, Bhavnagar, Bhilai Nagar, Bhiwandi, Bhopal, Bhubaneswar, Bikaner, Chandigarh, Chennai, Coimbatore, Cuttack, Dehradun, Delhi, Dhanbad, Durgapur, Faridabad, Firozabad, Gaya, Ghaziabad, Gorakhpur, Gulbarga, Guntur, Gurgaon, Guwahati, Gwalior, Haora, Hubli and Dharwad, Hyderabad, Indore, Jabalpur, Jaipur, Jalandhar, Jalgaon, Jammu, Jamnagar, Jamshedpur, Jhansi, Jodhpur, Kalyan & Dombivali, Kanpur, Karnataka, Kochi, Kolapur, Kolkata, Kota, Loni, Lucknow, Ludhiana, Madurai, Maheshtala, Malegoan, Mangalore, Meerut, Mira, Bhayander, Moradabad, Mumbai, Nagpur,Nanded Waghala, Nashik, Navi Mumbai, Nellore, Noida, Patna, Pimpri & Chinchwad, Pune, Raipur, Rajkot, Ranchi, Saharanpur, Salem, Sangli Miraj Kupwad, Siliguri, Solapur, Srinagar, Surat, Thane, Thiruvananthapuram, Tiruchirappalli, Tirunelveli, Udaipur, Ujjain, Ulhasnagar, Vadodara, Varanasi, Vasai Virar, Vijayawada, Visakhapatnam, Warangal.
Spectacle Blind Flange Exporter to all major cities in the world
We export Square flange to Seoul, Hanoi, Los Angeles, Rio de, Houston, York, Dammam, Al-Khobar, Bogota, Al-Jubail, Chiyoda, Abu Dhabi, Kuwait Santiago, Perth, Busan, London, Jakarta, Surat, Courbevoie, Dallas, Calgary, Mexico Muscat, Aberdeen, City, Edmonton, Riyadh, Caracas, Ahvaz, Brisbane, Moscow, Milan, Manama, Ulsan, Jaya, Granada, Vung Petaling, Melbourne, Montreal, Port-of-Spain, La Victoria, Istanbul, Janeiro, Karachi, New Singapore, Madrid, Lagos, Atyrau, Sydney, Kuala Dubai, City, Bangkok, Toronto, Gimhae-si, Lumpur, Jeddah, Pimpri-Chinchwad, Tehran, Doha, Ho-Chi-Minh-City, Algiers, Tau, Colombo, Ernakulam, Geoje-si, Cairo, Sharjah, Lahore.
Teshi exports Spectacle Blind Flanges in more than 50 countries. We have shipments going out monthly to different countries for our newly acquired customers. Our ready stock of Flanges helps us ship the Flange and meet the requirement and demands of our customers as fast as possible.
We Export Spectacle Blind Flange to United States (USA), Canada, Germany, Japan, France, Middle-East, Bangladesh, Nepal etc.
Product
Export
Frequently Asked Questions
Most frequent questions and answers
What is a Spectacle Blind Flange?
A Spectacle Blind Flange is a safety device used in piping systems to isolate sections or equipment. It has a figure-eight shape, with one side open (allowing flow) and the other closed (blocking flow), used to shut off or allow flow as needed.
How does a Spectacle Blind Flange work?
Spectacle Blinds are installed between two flanges, with one side blocking the pipe (blind side) and the other allowing flow (open side). The position can be switched by rotating the flange, providing either flow or isolation.
What are the main applications of Spectacle Blind Flanges?
Spectacle Blind Flanges are used in oil and gas, petrochemical, and power generation industries to provide positive isolation during maintenance, inspection, or shutdowns of a section of piping.
What materials are Spectacle Blind Flanges made from?
Common materials include carbon steel, stainless steel, alloy steel, and other materials suited to the pressure and temperature requirements of the system.
What are the benefits of using a Spectacle Blind Flange?
Spectacle Blinds provide a visual indication of the flow status and offer a secure, positive isolation method, preventing accidental flow during maintenance.
What standards do Spectacle Blind Flanges follow?
They are typically manufactured to standards such as ASME B16.48, ensuring consistency and safety in pressure and temperature tolerance across industrial applications.
What sizes are available for Spectacle Blind Flanges?
Spectacle Blinds are available in various sizes, typically ranging from 1/2 inch to 24 inches and larger, depending on the system requirements.
What pressure ratings do Spectacle Blind Flanges support?
Spectacle Blinds are available in multiple pressure classes, such as Class 150, 300, 600, 900, 1500, and 2500, to suit different piping systems.
How are Spectacle Blind Flanges installed?
They are installed between two flanges in a piping system and bolted together, with either the blind side or open side aligned with the pipe bore depending on whether flow or isolation is desired.
Can Spectacle Blind Flanges be used for high-temperature applications?
Yes, when made from heat-resistant materials, Spectacle Blinds can handle high-temperature environments, ideal for industrial applications.
What is the difference between a Spectacle Blind Flange and a Line Blind Flange?
A Spectacle Blind has an open and closed side for switching between flow and isolation, while a Line Blind is a solid plate used solely for blocking flow.
Are Spectacle Blind Flanges reusable?
Yes, they are typically reusable as long as they remain undamaged and fit securely between the mating flanges.
What industries commonly use Spectacle Blind Flanges?
Industries such as oil and gas, chemical processing, power generation, and refineries use Spectacle Blinds to ensure safe operation and maintenance.
Do Spectacle Blind Flanges require regular inspection?
Yes, regular inspection ensures they remain in good condition and that the bolts and gaskets maintain a secure seal.
Can Spectacle Blind Flanges handle corrosive environments?
When made from corrosion-resistant materials like stainless steel or specific alloys, they are well-suited for corrosive or hazardous environments.
How are Spectacle Blind Flanges used for isolation?
They provide a reliable means to block flow in a piping system by aligning the blind side in line with the pipe bore, ensuring no flow during maintenance.
What gasket types are compatible with Spectacle Blind Flanges?
Common gasket materials include graphite, PTFE, and rubber, depending on the temperature, pressure, and chemical compatibility requirements.
Are Spectacle Blind Flanges leak-resistant?
Yes, when installed with proper gaskets and tightened bolts, Spectacle Blinds provide an effective seal, preventing leaks.
What is the typical lifespan of a Spectacle Blind Flange?
With proper maintenance, a Spectacle Blind Flange can last many years, particularly in lower-stress environments.
What bolt sizes are required for Spectacle Blind Flanges?
Bolt sizes depend on the flange size and pressure rating. The flange’s ASME rating and system requirements will determine the appropriate bolt size.
What are the typical dimensions of Spectacle Blind Flanges?
Dimensions vary by size and pressure class. They are designed to fit precisely between flanges of corresponding dimensions per ASME B16.48 standards.
How often should Spectacle Blind Flanges be replaced?
They should be replaced if there are signs of wear, corrosion, or damage that could compromise their performance, especially in critical systems.
Are Spectacle Blind Flanges suitable for low-temperature environments?
Yes, they can be manufactured from low-temperature steel or alloys, making them suitable for cryogenic and other low-temperature applications.
How do I select the correct Spectacle Blind Flange for my application?
Consider factors such as pipe size, pressure rating, material compatibility, temperature requirements, and potential corrosive exposure.
Can Spectacle Blind Flanges be custom-made?
Yes, custom sizes and materials can be fabricated to meet specific requirements outside of standard dimensions and materials.
What safety considerations are associated with Spectacle Blind Flanges?
Proper installation is critical, including secure tightening and alignment to prevent accidental flow in high-pressure systems.
Are Spectacle Blind Flanges used in hazardous environments?
Yes, they are often used in hazardous and critical environments to ensure absolute flow control and safe isolation.
Can Spectacle Blind Flanges be rotated while the system is pressurized?
No, the system should be depressurized before adjusting the position of a Spectacle Blind to prevent accidents and ensure safety.
Are there alternatives to Spectacle Blind Flanges?
Alternatives include line blinds, slip blinds, and blind flanges, though Spectacle Blinds offer the advantage of quick switching between open and closed configurations.
What is the torque requirement for Spectacle Blind Flange bolts?
Torque requirements depend on the flange’s pressure class and bolt size. Manufacturer guidelines should be followed to ensure proper sealing.
