| 摘要 |
Valve, such as a three-port pilot valve, primarily for fluid flow, comprising a housing (1, 2) with two or more ports (5, 6, 8) constituting an inlet and outlet, in which housing a stop cock plug (3) or the like is adjustably situated to work together with a seat or the like (4) in the housing, where the size and, where appropriate, composition of the flow can be affected.The invention valve is especially distinguished by the valve housing (1, 2) which is made up of a first, outer housing (1), which contains the aforementioned ports (5, 6, 8), and a second, inner housing (2) that is replaceably situated in the first housing (1) and contains the aforementioned stop cock plug (3) and seat (4). The second housing (2) is to be made in two or more variants based on, for example, the shape of the stop cock plug (3) and seat (4), both/all fitting in the first housing (1) so that the valve properties, most importantly valve characteristics and/or permeability at a specific pressure drop across the valve, the so-called kv value, can be selected by incorporating a specific second housing (2) in the uniform shape of the first housing (1).<IMAGE> |
