The fracture surface of a failed injection valvenut of diesel engine high pressure oil pump was investigated by visual and SEM.
对断裂的汽车柴油机高压出油阀紧座的宏观、微观断口及显微组织进行了研究。
2
The straight threads of the nut engage with the mating threads of the valve outlet and are tightened to compress the gasket between the two sealing surfaces.
螺母的直螺纹同阀门排气口的配合螺纹咬合在一起并上紧，来压缩在两个密封表面之间的衬垫。
3
Adjustment of this union nut can compensate for wear of TFE seats, with no production loss to remove valve for internal adjustment.