Flange protector

Details Flange protector Flange protector

1978-04-18

1979-06-26

Callaghan, Thomas F.

Pipe joints or couplings

Packed

With cooperating opposed packing grooves

285351, 285363, F16L 2300

Patent

active

041591356

ABSTRACT:
Apparatus is disclosed for protecting the end face of an annular blowout preventer or the like from corrosion. In one embodiment, both a ring groove and a circle of tapped stud holes are protected in a low pressure environment by parts on a bell flange to be connected above the annular preventer, and, in another embodiment, the circle of holes is protected in a high pressure environment by the flange of another preventer to be connected above the annular preventer and sealed with respect to the annular preventer by a conventional metal API seal ring.

REFERENCES:
patent: 627293 (1899-06-01), Brighton
patent: 930692 (1909-08-01), Robinson
patent: 2384386 (1945-09-01), Malmberg
patent: 2456234 (1948-12-01), Young
patent: 3463196 (1969-08-01), Richardson

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