What is the function of spectacle flanges?

Spectacle flange consist of a connected ring (spacer) and a plate (spade).

Spectacle blinds are generally applied to permanently separating pipe systems,or just to connect with each other.A spectacle blind is a steel plate cut into two discs of a certain thickness.

Carbon Steel Spectacle Blind Flange Application Pipeline Install

Spectacle blind flanges 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.

Maintenance on a pipe system can be a reason to rotate the spectacle in the “close” position. This run will take place through the hole,that is drilled in the connection piece.By loosening of all bolts, and partial removal of their, the spectacle blind can be rotated. After replacing the gaskets (new gaskets are to recommend), the bolts can be re-assembled and tightened.

Spectacle Blind Flange Application Pipeline Install

Spades and ring spacers are basically the same as spectacle blinds, except that both are not attached to each other.

Spades and spacers be applied in systems where maintenance is often not necessary, or in applications with large pipe sizes. Depending on the flange size and the pressure class,spades can weigh hundreds of pounds.To prevent unnecessary weight to a flange connections, usually will be chosen not for a spectacle blind,but for 2 separate parts.

Hebei Haihao Group is a manufacturer of spectacle flanges with high quality.Recently we have a Kazakhstan customer order of 20in spades with A516 GR70 material.

If you also have interest, please contact us. Welcome! Email:sales@haihaogroup.com

Carbon Steel Spade Spectacle Blind Flange