Blind flange

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a plate for covering or closing the end of a pipe.

See also: Flange

References in periodicals archive ?
Each wye fitting was equipped with a blind flange that could be bolted closed at all times except when a cleaning pig was being introduced.
The vent for the blind flange side can be placed in the top of the blind where the flange opening contacts the flange.
Due to the leaking valve subsea caused by an anchor drag accident, production was stopped so the valve could be removed and a blind flange placed on the connection.
Tenders Are Invited For Set Of Flanges As Per Technical Specification Mentioned In Enquiry Line Items (1Set Consists Of Counter Flange / Blind Flange, Gasket And Fasteners)