| 摘要 |
An hydraulic valve has a body with a longitudinal bore therein. An annular recess is formed within the longitudinal bore and has a circumferential surface through which a fluid port opens. A filter band, with a plurality of apertures there through, is located within the annular recess abutting the circumferential surface. A helical spring has spaced apart convolutions that engage the filter band and exert an outward radial force which holds the filter band against the circumferential surface of the bore recess. A valve element, such as a spool, is slideably received within the longitudinal bore to control flow of fluid through the fluid port.
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