目前，液压阀存在互换性差、不对称阀芯的设计加工困难等不足。
At present, hydraulic valve has the deficiency of inadequate interchangeability and machining difficulty of unsymmetrical valve spool.
平行阀座闸阀由两个可互换弹簧负载阀瓣，一个全导向阀瓣托架和扣环销钉构成。
The parallel seat gate assembly consists of two interchangeable spring loaded discs, a fully guided disc carrier, and retaining pins.
在纽曼帝克75，125和250汽车系列阀符合互换和SAE汽车行业标准。
The Numatics 75, 125, and 250 Automotive Series valves comply with automotive interchangeable and SAE industrial standards.
Chemtrol截止阀具有两种类型，角形和Y形，可以在任何所给通径的阀门范围内使用可互换部件。
Both styles of Chemtrol Globe Valves, the Angle and the Y-pattern, utilize interchangeable components within any given valve size.
本脚踏阀结构紧凑，外表美观，阀的互换性强，性能稳定，可靠。
This kind of foot valve features compactness, elegant appearance, high inter-changeability and stable and reliable performance.
本脚踏阀结构紧凑，外表美观，阀的互换性强，性能稳定，可靠。
This kind of foot valve features compactness, elegant appearance, high inter-changeability and stable and reliable performance.
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