Line blind assembly having disc and spacer ring selectively disp

Pipes and tubular conduits – With flow regulators and/or baffles – Restrictors

Patent

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Details

138 543, F15D 100

Patent

active

053037405

ABSTRACT:
There is disclosed a line blind assembly having a pair of tubular members adapted to be connected in a flowline and connected to one another by bolts having nuts on their ends to permit sealing faces on the inner ends of the tubular members to be tightly engaged with sealing faces on the opposite sides of either a disc or a spacer ring upon removal of the other from within the space. A series of circumferentially spaced, hydraulically operable, extendable and retractable actuators are connected at one end to one tubular member and the other end to the other tubular member, so that the sealing faces may be moved toward and away from one another independently of the bolts and nuts.

REFERENCES:
patent: 1000173 (1911-08-01), Hughes
patent: 1506021 (1924-08-01), McGee

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