To provide a double seal valve which has a sufficient durability to a temporary operation of an excessive pressure, and can carry out the connection and the disconnection to a valve element easily.

This double seal valve furnishes two valve elements 11 and 12 operating independently, and a valve seat 30 having two valve seat surfaces 31 and 32 conbined with the valve elements 11 and 12 respectively, and it has a valve mechanism which can seal doubly between flow passages 2A and 2B partitioned by the valve seat and the valve elements, by abutting the valve element 11 and 21 to the corresponding valve seats 31 and 32. In this case, to the abutting parts of the valve elements with the corresponding valve seat surfaces, seal members 14 and 24 with the hardness more than the Shore hardness 85 are provided, and to the valve elements 11 and 21, retainers 13 and 23 to hold the seal member 14 and 24 are provided, as well as groves 11g and 21g to receive the seal members 14 and 24 are provided.