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2 029 073

(13)

C1

(51)

IPC

(21) (22)

Application

4944471/03, 1991-06-13

(22)

Actual filing date

1991-06-13

(45)

Published

1995-02-20

(72)

Inventor

Sharifov M.Z.Leonov V.A.Osipov A.A.

(73)

Holder

Sharifov Makhir Zafar Ogly

VALVE FOR FLOW REGULATION Russian patent published in 1995 - IPC

Abstract RU 2029073 C1

FIELD: oil-producing industry. SUBSTANCE: valve has hollow body with passing channels, bellows, charging unit, seals and rod with locking member rigidly connected with bellows. Attached to each end of bellows is rod with locking member. In first case, bellows with locking members is installed freely in body, and charging unit is located in one locking member. In the other case, bellows is made of two mutually opposite hydraulically communicated parts rigidly connected in body with charging unit arranged between them. Made between bellows chambers may be rigid partition. In this case, each rod with locking member has charging unit. Diameters of locking members may be similar or larger than diameters of bellows. Each rod with locking member may be provided with retaining unit. EFFECT: higher efficiency. 6 cl, 3 dwg

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RU 2 029 073 C1

Authors

Sharifov M.Z.

Leonov V.A.

Osipov A.A.

Dates

1995-02-20—Published

1991-06-13—Filed

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