AUTOMATIC VALVE - SHIKOKU KAKOKI CO LTD

Title:

AUTOMATIC VALVE

Document Type and Number:

Japanese Patent JPS5813264

Kind Code:

A

Abstract:

PURPOSE:To enable to use the valve selectively as a two-way valve or a three- way valve while detecting the valve opening and closing conditions, by fitting a mouth ring or a closure plug into a downward opening formed in the main body of the valve, and attaching a detector switch operated by a rod to a piston for driving a valve body. CONSTITUTION:In case of using the valve as a three-way valve, a mouth ring 10 is fitted into an opening 1C formed in the main body of the valve and air on the side of a cylinder head 5A is drawn out, whereby a valve body 4 comes into engagement with its valve seat 1E, so that fluid is passed from an opening 1A to the opening 1C. In this state, if air is introduced to the side of the cylinder head 5A, the valve body 4 is brought into engagement with another valve seat 10A, so that fluid is passed from the opening 1A to an opening 1B. In case of using the valve as a two-way valve, on the other hand, a valve port 1F is opened and closed with a closure plug being fitted into the opening 1C. In the above arrangement, closing of the above openings is detected by a detector switch 9 which is operated by a detector rod 8.

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