Patent ID: 11867316

Abstract:
[Object] The present invention provides a flaw rate control valve and a producing method of the flow rate control valve in which cross-linked PTFE having excellent abrasion resistance and capable of reducing a dust-generating amount is used only on a contact portion between a valve body and a valve seat.[Solving Means] According to a flow rate control valve 1 of the invention, a flow path-side body 10 and a valve body 40 are made of fluorine-based resin composed of PFA or PTFE, and an annular or circular seal member 81 made of cross-linked PTFE is joined to a valve body-side abutting portion 40a having a valve seat 13 against which the valve body 40 abuts and to a valve seat-side abutting portion 13a of the valve seat 13 against which the valve body 40 abuts.