To prevent fine particles from adhering to fine irregular flaw parts due to abrasion or impact, and prevent the occurrence of defective painting caused by the mixing of foreign matters such as fallen agglomerate into a paint film.

In a valve for fluid, which is equipped with a closing valve formed out of a partition part 7 partitioning a space between a fluid inlet part 6 side and an outlet part 1 side, and of a movable plate 4 capable of vertically moving for isolating and releasing an opening part 8 provided for the partition part 7, in a housing part 2 which is equipped with the fluid inlet part 6 and the outlet part 1, and is filled with fluid, the movable plate 4 and a sealing material 5 provided for the circumference of the opening part 8 of the partition part 7 brought into close contact with the movable plate 4, are formed out of elestic member whose rubber hardness is 50° to 75°, and the contact portion of the movable plate 4 with the sealing material 5 is thereby prevented from being worn out due to their repeated contact.