Patent ID: 7357153

Claim:
A pressure-reducing valve mounted on a lid of a high-pressure gas cylinder, comprising: a first valve chest formed in said lid; a first valve seat formed in said first valve chest; a first flow channel communicating between an opening part of the first valve seat and an inside of the high pressure gas cylinder; a first valve element capable of reciprocating between a closing position sealing the first valve seat and an opening position apart from the first valve seat while retaining an air-tightness in the first valve chest; a first energizing member for energizing the first valve element in a direction of the opening position; a first pressure-reducing chamber communicating with the first valve chest and located at a downstream side of the first valve chest; a second flow channel communicating with a second valve chest in the first pressure-reducing chamber; a second valve seat formed in the second valve chest and having an opening part of the second flow channel; a second valve element capable of reciprocating between a closing position sealing the second valve seat and an opening position apart from the second valve seat while retaining an air-tightness in the second valve chest; a second energizing member for energizing the second valve element in a direction of the opening position; a second pressure-reducing chamber communicating with the second valve chest and located at a downstream side of the second valve chest; and a main body containing the first valve element, the first energizing member, the second valve element and the second energizing member, wherein the first valve element and the second valve element are reciprocated on a same axis line.