The fluid flow control valve and its production method and is used for the fluid flow control valve the valve element

摘要

PURPOSE:To let a large flow run out through the assemblage of separation even if each diameter of valve bodies is the same in size by installing such a partition wall as separating a primary side passage from the secondary side passage, and being erectly formed so as to describe a closed contour as assembled into the central side from a peripheral position of a valve seat, in either of the valve body or the valve seat. CONSTITUTION:There are provided with plural numbers of valve bodies 2001-2005 having a body part 201 accorded with a valve chest in specified form, and each of partition walls 2021-2025 different in a closed contour described according to flow control ranging from a small flow rate to the large one. Next, length of the contour selects these required valve bodies 2001-2005 according to the necessary flow rate, installing them in the valve chest. With this constitution, these partition walls 2021-2025 separating both primary and secondary side passages are erectly formed in this body part 201 so as to describe the contour, thus a desired fluid flow control valve is secured.