| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which, in a conventional one, an orifice is provided at a needle valve for stabilizing fire power at minimum fire power time, but even when a valve port is completely closed by the needle valve, a gas is supplied to a gas burner through the orifice, and the gas supply cannot be stopped.SOLUTION: A valve body is provided for opening/closing an orifice, and second energization means is provided for energizing the valve body in a direction separating from a needle valve with an energization force larger than the energization force of first energization means for energizing the needle valve in a valve opening direction. When moving the needle valve in a closing direction, after the needle valve closing a valve port against the energization force by the first energization means, the valve body approaches the needle valve against the energization force of the second energization means, and closes the orifice. |
