Direct-action is through direct manipulation of the spring force; Pilot is a good pre-adjust the air pressure regulator instead of direct-action spring to surge, and the general flow characteristics of pilot-valve direct-acting type than good.
直动式是借助弹簧力直接操纵的；先导式是用预先调整好的气压来代替直动式调压弹簧进行调压的，一般先导式减压阀的流量特性比直动式的好。
Formation of excessive high surge pressure as a result of valve closing, and
在阀门关闭时，形成过高的冲击压力，以及
According to the project practice of pumps in Yu-zhong Steelworks, this paper put forward some water hammer preventive measures of long distance pipe pump station of water supplying, such as the multifunction controlling valve of the water pump, one-way surge tank and vent valve, etc.
根据水锤计算的特徵线法，建立了泵出口附近设单向调压塔水锤计算的数学模型，结合榆中钢厂供水泵站的工程实际，提出了长管道供水泵站采用多功能水泵控制阀、单向调压塔、进排气补气阀对事故停泵水锤的防护措施。
The design of the assembly of pump station. The design of componet of the surge tank. The system consists of poppet valve for its compact structure, excellent seal effect. Higu essicinences.
该系统由插装阀组成，是由于插装阀具有体积小，密封性好，功率损失小和动作速度快等优点。
The structure and operational principle of Danflo surge relief valve imported from Danie Co.
介绍了库鄯输油管道引进的美国DANIEL阀门公司生产的DANFLO水击泄压阀的结构、原理及运作中的注意事项。
With the socio-economic and scientific and technological development, extensive use of microelectronics devices, we not only Yao attention to the prevention of the impact of buildings or other objects of the lightning directly stroke disasters, but also for the lightning electromagnetic pulse protection has also given adequate attention, at home and abroad during the implementation of lightning protection for the LEMP protection, usually with surge protector limit transient over-voltage, and guide the discharge surge current to achieve, is now generally used in the SPD main components are: Zinc metal oxide valve, discharge gap, gas or solids discharge tube, filter coils, transient diode so on, and used in low voltage line (220V ~/ 380V ~) in the SPD, the vast majority of the use of MOV valves.
随着社会经济和科学技术的发展，微电子设备的广泛应用，我们不仅耀注意预防对影响建筑物或其他物体的直击雷灾害，而且对雷击电磁脉冲的防护更给足够地重视，目前国内外在实施雷电防护过程中对于LEMP的防护，通常是采用电涌保护器限制瞬态过电压和引导泄放电涌电流来实现，现在一般在SPD中使用的主要器件为：金属氧化锌阀片、放电间隙、气体或固体放电管、滤波线圈、瞬变二极管等，而使用在低压线路（220V～/380V～）中的SPD、绝大多数是使用MOV阀片。
The Improvement of Air Compressor Anti-surge Interlock Control System Membrane Valve
空气压缩机组防喘振阀联锁控制的改进
Take the PetroChina Pipeline Company as an example, this paper introduces and discusses the application of relief valve against surge to protect pipelines.
在长距离输油管道的运行中，防止水击发生，是管道安全平稳运行的重要保证。
Preventing the Pipeline Surge with Multi-function Electro-hydraulic Valve
运用多功能电液阀防止管路水击
The application displays that the valve regulating law can optimize for the fuel filling system of airport, and remarkably control and reduce the surge pressure on the basis of basic principle of valve regulation.
实际应用表明，将阀调节基本原理应用于机场管道加油系统，可有效降低加油系统管道的水击压力。
Application and maintenance of program control valve The Improvement of Air Compressor Anti-surge Interlock Control System
程控阀在变压吸附装置中的应用及维修空气压缩机组防喘振阀联锁控制的改进
The main factor was the entrance pressure of the regulating valve before surge valve to influence the conversion of valve slice of surge valve.
运用正交试验设计方法在田间进行灌水试验，结果表明：波涌阀前调节阀入口压力是影响波涌阀阀片转换的主导因素；
As for the control of the negative surge wave, quick opening regulating valves can be used, while the positive surge wave, low pressure relief valves can be used in pressure relieving besides sensitive regulating valve system, in order to reduce surge pressure.
对于故障性负水击波，可采用快速调节阀控制，而对于正水击波，除采用反应灵敏的调节系统外，还可采用低压泄压阀泄压，以降低水击幅度。
A so-called " Comprehensive Operating Test " carried out on a single valve element is described and it is recommended for use in estimating the ability of gapless metal oxide surge arresters when withstanding a combined operating duty.
用单个阀片进行综合试验，以估计氧化锌无间隙避雷器承受综合动作负载的能力。此法为完善避雷器设计提供信息。
Centrifugal Compressor Anti-Surge Control Using a Closed-Coupled Valve; The control logic preventing the compressor from surge was analyzed and improved after the performance curve of compressor in gas turbine booster station was analyzed.
基于紧连控制阀的离心式压缩机防喘振控制通过对燃气轮机增压站压缩机性能曲线的分析，对压缩机防喘振控制逻辑进行了分析及改进。
Investigation on the selection type of pump outlet valve & for the pipeline with pneumatic surge chamber
水泵出口阀门类型选择的研究&采用气压式调压室的输水系统
Designing the fuzzy inference system of the anti-surge valve.
设计防喘阀开度值的模糊推理系统。
The indexes of various functions (the result of the sealing and closing water current of valve slice of surge valve, the starting and shutting and fixed position of the valve slice, etc) were all satisfied with the function request of surge irrigating equipment.
波涌阀阀片的密闭止水效果、阀片的启闭定位等各项性能指标均满足波涌灌溉设备的性能要求，该设备具有较高的实用性和可操作性。
Research on action of slow closure back pressure valve in water delivery system with air cushion surge tank
设置气压式调压室的输水系统中缓闭止回阀作用的研究
The surge tests made are introduced for some oil pipelines in China, the performances of regulating valve system used in pipelines are basically described, and the surge control tests are analyzed in detail.
介绍了我国几条输油管道水击试验的基本情况，对管道调节阀系统的功能作了一般性叙述，对水击控制试验进行了详细的分析。