RU1839703C

RU1839703C - Ball cock

Info

Publication number: RU1839703C
Authority: RU
Inventors: Евгений Абелевич Шалахман; Анатолий Александрович Гребков; Александр Евгеньевич Кондратьев; Сергей Алексеевич Ершов
Priority date: 1990-08-27
Filing date: 1990-08-27
Publication date: 1993-12-30

Abstract

Изобретение относитс к арматуростроению. Целью изобретени вл етс повышение степени герметичности затвора крана путем обеспечени регламентированных усилий предварительного поджати седел к шаровой пробке. В исходном положении седла 3 поджаты к пробке 5 резьбовой втулкой 6, а поверхность 4 находитс в контакте с расточкой 2. При подаче давлени в кран в закрытом положении пробка 5 дополнительно поджимаетс к седлу 3. а поверхность 4 за счет давлени в канавке 9 - к расточке 2. 1 илThe invention relates to valve engineering. The aim of the invention is to increase the degree of tightness of the valve shutter by providing regulated efforts pre-tightening the seats to the ball plug. In the initial position, the saddles 3 are pressed against the plug 5 by the threaded sleeve 6, and the surface 4 is in contact with the bore 2. When the pressure is applied to the valve in the closed position, the plug 5 is additionally pressed against the seat 3. And the surface 4, due to the pressure in the groove 9, boring 2. 1 il

Claims

SUMMARY OF THE INVENTION A BALL VALVE comprising a housing, a plug and non-metallic sealing seats installed in the bores of a housing and pressed by a threaded sleeve moving along the internal thread of the housing, characterized in that, for the purpose of

to increase the degree of tightness, the surface of the body bore in contact with the seal. the saddle is made conical, and on the end surface of the saddle facing the cork and not in contact with it, a concentric annular groove is made.