What is Spectacle blind flanges?

S Nomi is a renowned Spectacle Blind Flanges Manufacturer and Supplier, located in Kolkata, West Bengal, Bihar, Odisha, and Jharkhand. Spectacle Blind Flanges Manufacturer – also known as figure-8 blind flanges – are generally pieces of metal. Spectacle Blind Flanges cut to fit between two pipe flanges and usually sandwiched between two gaskets. A Spectacle Blind Flanges is often made from two metal discs that are attached to each other by a small section of steel.

What is the purpose of a spectacle blind?

A Spectacle Blind Flanges or spec blind, abbreviated as SB, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. It is different than a valve in that the blind is a permanent or long-term isolation device.

How do you use a spectacle blind flange?

Spectacle Blinds be applied in systems, which regularly need to be separated from other installations. Normally, a Spectacle Blind is mounted in the “open” position so that flow through the pipe is possible. If the Spectacle Blind in the “close” position is rotated, the pipe is blanked off and no flow is possible.

Spectacle Blinds products are commonly applied to separating pipe systems permanently and to connect. Our offered Blind product is a steel plate cut into two discs of a specific thickness. These two discs are connected or attached by a steel section, which looks like the nose piece of glasses. Here, one of the discs is a solid plate, whereas the other is a ring (its inside diameter is equal to that of a flange). We are provide high quality as Spectacle Blind Flanges Manufacture in Kolkata, West Bengal, Bihar, Odisha, and Jharkhand.  These Blinds can be efficiently used in systems that regularly require to be separated from other installations. These high-grade Spectacle Blind Flanges are mounted in the position, which is in an open state, in such a way that flow through the pipe is possible. If we rotate the close position of Spectacle Blinds, the pipe is blanked off, and no current is possible.

These are turned to a closed position while the maintenance of a pipe system is carried out. Now, the flow will take place through a hole drilled in the connection piece. So, by loosening all bolts and partial removal of these Spectacle Blind can be switched. After restoring the blinds from old gaskets, the bolts are then re-assembled and tightened.

Our product range also comprises of Carbon Steel Flanges, Spectacle Flange and Duplex Flanges. These are durable in quality and are precision made. These spectacle flanges are made from high quality carbon steel and stainless steel and are offered in different dimensions & sizes that ensure that no compromise is made the aspect of quality.

Spectacle Flanges Range
½” (15 NB) to 48″ (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. Available with NACE MR 01-75

Stainless Steel Spectacle Flanges
Grade : 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430L

Duplex Steel Spectacle Flanges
Grade : 2205 (UNS No. S31803), 2507 (UNS No. S32750)

Nickel Alloy Spectacle Flanges
Grade : 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), Titanium (Grade I & II)

Copper Alloy Spectacle Flanges
Grade : UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30)