| 摘要 |
Provided are: a valve device that can effectively secure connection strength at the location of connection by means of welding a copper member and a stainless steel member; and a method for producing the valve device. A motor-operated valve (1) is produced by means of a production method including a welding step such that: a first connector (17) is inserted into a first interconnection hole (11A) that is formed at a valve housing (11) and that interconnects the inside and outside of the valve housing (11), and a second connector (18) is inserted in a second interconnection hole (11B); tube members (55, 56) comprising nickel are sandwiched between the valve housing (11) and the first connector (17) and second connector (18); and laser welding is performed along the peripheral direction of the first interconnection hole (11A) and the second interconnection hole (11B) in a manner so as to form a first welded section (51) and second welded section (52) resulting from stainless steel, copper, and nickel each being melted and then solidified between the valve housing (11) and the first connector (17) and second connector (18). |
