Super Duplex/Duplex Steel Spectacle Blind Flange
Super Duplex/Duplex Steel Spectacle Blind Flange are used in separating pipe systems for the connection. It is a steel plate divided into two discs of a certain thickness. Out of these two discs, one disc is of a solid plate and other is a ring whose inner diameter is equal to that of a flange. Spectacle Blinds is required in the systems that regularly need to be separated from other installations. Generally, it is mounted in the “Open” position so that flow through the pipe is possible. If it is placed in the “close” position and if it is rotated, then, the pipe is blanked off and no flow is feasible. The whole idea of a spectacle blind is to ensure that an item of equipment is properly and securely blanked off with no leakage or no flow through a valve during maintenance.
The whole idea of a spectacle blind is so that one can be absolutely sure that an item of equipment is properly and securely blanked off with no possibility of any flow or leakage through a valve during maintenance. The flow can be diverted to other items of equipment but not just bypassed around the blank as this would compromise the safety function of the spectacle blind. The flow has to valved off and pressure relieved prior to loosening flange bolts and swinging the blind.
|Type:||Spectacle Blind Flange|
|Dimension/Standard:||ASME B16.9, ANSI B16.9, ASME B16.28, ANSI B16.28, ANSI B16.25, ASME / ASTM SA / A403, ASTM A 234, ASTM / ASME A/SA 182, ASTM SA 182, ASME B16.11, ANSI B16.11, ASTM A105, ASTM A182|
|Super Duplex/Duplex Steel: :
Grade: UNS F44, F45, F51, F53, F55, F60, F61
Grade: Monel 400, Monel K500, Monel R-405
Grade: Nickel 200, Nickel 201
Grade: Inconel 600, Inconel 601, Inconel 625, Inconel 718
Grade: Incoloy 800, Inconel 800H, 800HT
Grade: Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X
Grade: Gr1, Gr2, Gr3, Gr5, Gr7, Gr11
Stainless Steel :
Grade: 304, 304L, 304H, 309, 309S, 316, 316L, 316H, 310, 310S, 317, 317L, 321, 347,904L
Carbon Steel :
Grade: WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70
Grade : WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91
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