| 摘要 |
PROBLEM TO BE SOLVED: To provide a check valve integrated cut valve accurately determining a load of a spring for pressing a check valve and securely opening the check valve at predetermined pressure. SOLUTION: The check valve integrated cut valve 10 is provided with a body case 20 storing a float valve 35 and having an air hole 23; an upper case 60 fitted to the body case 20; a cylindrical part 27 erected on the outer periphery of the air hole 23 of the body case 20 and having engagement pieces 30 extended from an upper edge part; the check valve 40 arranged within the cylindrical part 27; a cap 50 having the outer periphery engaged with the engagement pieces 30 and mounted to an upper end of the cylindrical part 27; and the spring 48 having an upper end abutting on the inner face of the cap 50 and a lower end abutting on the check valve 40 and energizing the check valve 40 to the air hole 23 side. The inner periphery of the upper case 60 regulates expansion of the diameter of the engagement pieces 30 by predetermined amount or more, and the cap 50 is held. COPYRIGHT: (C)2009,JPO&INPIT
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