1.
Study on Performance of PTFE Sealing Materials in 4-Way Reversing Valve of R410A Air-Condition
R410A条件下四通换向阀PTFE密封性研究
2.
Design Improvement of the Refrigeration High Capacity Crossing Electromagnetic Four-way Reversing Valve
制冷用大容量交叉式电磁四通换向阀设计改进
3.
Design Selection and Using of Large-capacity Refrigeration Cross-electromagnetic Reversing Valve
制冷用大容量交叉式电磁四通换向阀的设计选型与使用
4.
Processing Technology Research of the Refrigeration Large Capacity Crossing Electromagnetic Four-way Reversing Valve
制冷用大容量交叉式电磁四通换向阀加工工艺研究
5.
dual way check valve
双向止回阀（双通单向阀）
6.
The hoisting mechanisms can be controled independently through the controlvalve.
主、副卷扬通过换向阀的控制，可单独操纵。
7.
Influent flow is then reversed at determined time intervals and the separation process repeated for the opposite end of the module, allowing further uninterrupted filtration.
第二阶段，即通过阀门切换，原液和回流浓缩液的方向进行倒换。
8.
Research on Multi-way Directional Valve with High-speed On-off Valve as Its Pilot Valve
以高速开关阀为导阀的多路换向阀的研究
9.
A new type tee joint reversed valve, which was used in negative pressure bag filter with opposite blow, is reported.
本文介绍负压反吹风布袋除尘器中一种新型的三通换向阀.
10.
ball check valve
球形止回阀（附有球阀和阀座的阀门,液体只能单方向通过）
11.
The Static Design of Closed-loop System for High-speed Switch Valve Controlled Hydraulic Valve
高速开关阀控换向阀闭环系统的静态设计
12.
The Performance Analysis and Research of a New Kind of Reversal Valve in Hydramatic Support;
新型液压支架换向阀性能分析与研究
13.
ON DESIGN RESEARCH OF AUTOMATIC REVERSING MECHANISM OF RECIPROCAL COMBINATION VALVE;
往复组合阀自动换向机构的设计研究
14.
Performance Analysis and Research of New Kind of Reversal Valve in Hydraulic Support
液压支架新型换向阀性能分析与研究
15.
Study of Coupled Water Hammer Vibration Characteristics of Hydraulic Control Valve
液压换向阀的耦合水击振动特性研究
16.
Bronze suction sea valves
GB/T11692-1989青铜吸入通海阀(四进位)
17.
Cast steel suction sea valves
GB/T11691-1989铸钢吸入通海阀(四进位)
18.
Dynamic Simulation Research on Tri-position Four-way Valve based on AMESim
基于AMESim三位四通阀动态仿真研究