| 摘要 |
PROBLEM TO BE SOLVED: To prevent excessive weight increase or increase of the cost of manufacture while securing a sufficient pressure resistance performance of a high-pressure part regarding a gas fuel regulator.SOLUTION: A gas fuel regulator 1A comprises: a high-pressure part A while includes a pressure regulation valve formed from a seat member 12 and a valve element 11 and forms a flow passage of gas fuel before pressure reduction; and a low-pressure part B which includes a pressure regulation chamber 14 and forms a flow passage of gas fuel, passing through the pressure regulation valve, after pressure reduction, and sends out introduced gas fuel to a downstream side after pressure reduction/regulation to predetermined pressure. The high-pressure part A is mounted to the side of a main body 2 in a removable state while being air-tightly inserted into a cartridge vessel 4 having a pressure resistance performance equal to or higher than a predetermined level together with a high-pressure part body 3 forming the high-pressure part A, and a pressure resistance performance of the low-pressure part B provided at the side of the main body 2 is set lower than that of the high pressure part by a predetermined level or more. |
