BS ISO 9974-4:2006 一般用途和流体动力用连接件.带弹性体密封件或金属对金属密封件的ISO 261螺纹的孔口和螺柱端.内外六角气门栓的尺寸、设计、试验方法和要求
Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Dimensions, design, test methods and requirements for external hex and internal hex port plugs
This part of ISO 9974 specifies dimensions and performance requirements for metric external hex and internal hex port plugs for use with ISO 9974-1 ports. Port plugs in accordance with this part of ISO 9974 can be used at working pressures up to 63 MPa (630 bar1)). The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, etc. Conformance to the dimensional information in this part of ISO 9974 does not guarantee rated performance. It is important that each manufacturer perform testing according to the specification contained in this part of ISO 9974 to assure that components comply with the performance ratings. NOTE The Introduction of this part of ISO 9974 gives recommendations for ports and stud ends to be used for new designs in hydraulic fluid power applications.