Two-way valve

US 20020003222A1 (19) United States

(12) Patent Application Publication (10) Pub. No.: US 2002/0003222 A1

Fukano et al. (43) Pub. Date: Jan. 10, 2002 (54) TWO-WAY VALVE (30) Foreign Application Priority Data Jul. 7, 2000 (JP) .................................... .. 2000-206977 IIIVCIIIOISZ YOSIIIIIIFO Fukano, Ibaraki-ken Publication Classification Tadashi Uchino, Ibarak1-ken (JP) (51) Int. Cl.7 ................................................. .. F16K 31/363 Correspondence Addresel (52) U.S. Cl. .......................................................... .. 251/63.5 PAUL A. GUSS PAUL A. GUSS ATTORNEY AT LAW (57) ABSTRACT 775 S 23RD ST FIRST FLOOR SUITE 2 ARLINGTON, VA 22202 A tWo-Way valve has a valve mechanism comprising a displacement mechanism for opening and closing a fluid passage by an action of a pilot pressure from a pilot port. The (21) Appl, No.: 09/899,195 pilot port is formed on an annular member disposed betWeen a body and a bonnet and is rotatable circumferentially by the (22) Filed: Jul. 6, 2001 annular member. 32 48 52 16 54b

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