Title:
【発明の名称】ゲート弁のボンネット及びフランジの急速開放クランプ
Document Type and Number:
Japanese Patent JPH10509786
Kind Code:
A
Abstract:
A clamp for quick release of a generally rectangular bonnet to the flange of valve body is disclosed. The upper side of the edge of the rectangular bonnet is formed with a bevel of about 20 degrees and the lower side of the edge of the body flange is formed with a similar bevel. The clamp consists of semi-circular ends and straight sides hinged together. One side is split and connected by a toggle latch. In cross-section, each clamp section is generally C-shaped, with the top and bottom arms of the C being beveled so that as the clamp sections are drawn inward the bevels wedge the bonnet against the flange. Locating pins fitting into holes in the plate and flange locate the parts and resist implosion when the valve body is subjected to vacuum. To maintain uniform clamping force around the circumference of the bonnet the bevels at the middles of the sides may be less wide than at the ends.
Inventors:
Blens Arthur Jay
Van de Graaff Fabian M
Van de Graaff Fabian M
Application Number:
JP51182795A
Publication Date:
September 22, 1998
Filing Date:
September 15, 1995
Export Citation:
Assignee:
High Vacuum Apparatas Manufacturing Inc.
International Classes:
F16B2/18; F16L23/036; F16L23/12; (IPC1-7): F16B2/18
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)