Title:
【発明の名称】自動ドレーンバルブ
Document Type and Number:
Japanese Patent JPH02501157
Kind Code:
A
Abstract:
An automatic drain valve for discharging accumulations of condensables and foreign materials from a pneumatic system. The drain valve (10) comprises a reservoir (14) defining an inlet (30) and an outlet (86) for flow-through communications with a pneumatic system. A pilot valve (41) is mounted in the reservoir (14) for selectively communicating pressurized air to a valve operator housed in the base portion (18) of the reservoir (14), such that the valve operator selectively opens and closes a drainage valve (82) communicating with the outlet (88) of the reservoir (14) for selective draining the reservoir. The pilot valve (41) includes a sensor tube (42) which defines a valve seat (44) and includes a magnetized valve plug (46) for selectively engaging the valve seat (44), the valve plug (46) having a selected magnetic polarity. A level sensing float (52) disposed within the reservoir (14) carries an annular magnet (56) normally having a polarity opposite that of the valve plug ( 46) such that the annular magnet (56) acts upon the valve plug (46) selectively opening and closing the pilot valve (41) as the float (52) rises and falls from a raised position to a lower position with the level of liquid within the reservoir (14).
Inventors:
Cummings, Ernie, W.
Farcus, Ralph, W.
Farcus, Ralph, W.
Application Number:
JP50731188A
Publication Date:
April 19, 1990
Filing Date:
August 22, 1988
Export Citation:
Assignee:
Drain-All, Incorporated
International Classes:
F16T1/20; F16T1/38; (IPC1-7): F16T1/20
Attorney, Agent or Firm:
Akira Asamura (3 outside)
Previous Patent: JPH02501156
Next Patent: METHOD AND DEVICE FOR DECIDING GROUND COLOR OF NUMBER PLATE
Next Patent: METHOD AND DEVICE FOR DECIDING GROUND COLOR OF NUMBER PLATE