To provide a snap tap with a saddle for suppressing the occurrence of corrosion by suppressing the conduction to a main water pipe while reliably maintaining a water flowing function.

In the snap tap with the saddle where a water stop mechanism 16 is built in a snap tap body 10, a cylindrical insulator 35 is loaded into an inner wall 33a of a primary diversion channel 33 of the water stop mechanism 16 so that an upper end 38 of the cylindrical insulator 35 extends upward from a ball seat mounting portion 32 of the water stop mechanism 16, to improve an insulating resistance value while suppressing a jumping current.