Fluid handling – Systems – Multi-way valve unit
Patent
1995-11-20
1997-04-15
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
13762527, F15B 13042
Patent
active
056200277
ABSTRACT:
The present invention provides a poppet type directional control valve, in which a valve body and valve disc can be manufactured and assembled in an easier manner and at low cost. In the directional control valve, in which a poppet type valve disc can be switched over and driven by pilot fluid pressure, there are provided on a valve body a first valve bore formed from one end toward a first valve seat, a second valve bore formed from the other end toward a second valve seat, and a communicating valve bore formed from the valve bore and communicating between the first valve seat and the second valve seat. The valve disc includes a first valve disc inserted through the first valve bore and used for opening and closing the first valve seat and a second valve disc inserted through the second valve bore, connected with the first valve disc and used for opening and closing the second valve seat, and these components are made of a material having elasticity and sealing property. The pilot chamber is formed between the first valve disc airtightly inserted in the second valve bore and a manual operating member for closing an opening of the second valve bore.
REFERENCES:
patent: Re34261 (1993-05-01), Sule
patent: 3820567 (1974-06-01), Bouteille
patent: 4630645 (1986-12-01), Spa
Michalsky Gerald A.
SMC Corporation
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