Pipe joint

A pipe joint comprising a pressing nut into which a pipe is inserted, a joint body into which said pressing nut is partially inserted, a sealing member for sealing said pipe and said joint body, a retainer engaging said pipe to prevent said pipe from being detached, and an engaging mechanism for keeping said pressing nut at a predetermined position in said joint body;

• said engaging mechanism comprising a stop ring, an annular groove formed on an outer surface of said pressing nut for receiving said stop ring, and pluralities of engaging grooves formed on an inner surface of said joint body for receiving said stop ring and communicating with each other;
• and
• said stop ring engaging both of said annular groove and a first engaging groove until the connection of said pipe is completed;
• whereby when a force in a drawing direction is applied to said pipe after completing the connection of said pipe, said stop ring moves from said first engaging groove to a second engaging groove on the inlet side thereof, so that said pressing nut is drawn from said joint body to such an extent that the normal connection of said pipe can be confirmed.