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English[en]
However, check out the current lack of quality valve equipment, repair shop received multiple high-pressure tubing connector with a pressure gauge to check the quality of the plunger valve while checking out the quality, but can only test a valve cone seal, and can not Measurement know these decompression valve seat ring and matching quality.
Chinese[zh]
然而目前缺乏检查出油阀质量的设备,修理厂多用压力表接到高压油管接头上检查柱塞质量的同时检查出油阀质量,但这只能检验出油阀锥体的密封性,而无法测知其减压环带与阀座的配合质量。

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