Title:
BONNETLESS SMALL-SIZED BALL VALVE
Document Type and Number:
WIPO Patent Application WO/1982/004298
Kind Code:
A1
Abstract:
An outer threaded type ball valve having no bonnet for controlling high-pressure fluid and formed of carbon steel, 3 1/2 nickel steel or stainless stell. A yoke (19) is threaded directly to a body (1), and a packing chamber (7) is provided at the body (1). A reverse seat (18) formed at a column with a collar is threaded to the lower portion of the chamber (7), and a valve body (16) and a valve body guide hole (9) sliding in contact with the body (16) are provided at the lower portion of the seat (18). The diameters of a valve seat (10), an inlet guide hole (12) and an outlet guide hole (13) are made smaller than that of a connection tube, each of holes (12) and (13) having intermediate throttles (14), (15). This ball valve is adapted for a petrochemical equipment for controlling high-pressure fluid.
Inventors:
KATO TOMOZO (JP)
Application Number:
PCT/JP1981/000132
Publication Date:
December 09, 1982
Filing Date:
June 05, 1981
Export Citation:
Assignee:
KATO TOMOZO
International Classes:
F16K1/08; F16K27/02; F16K31/50; F16K41/00; (IPC1-7): F16K1/08; F16K27/02
Foreign References:
| JPS5245821U | 1977-03-31 | |||
| JPS4955622U | 1974-05-16 |
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