阀门

This procedure requires the operator to close the valve as tightly as possible by hand, then vent the pressure in the valve outlet and reclose the valve immediately. This is

这个程序要求操作者用手尽可能紧的关闭阀门，排出阀门排气口的压力，接着马上重新关紧阀门。

The Company are the production of forged steel valve series of professional firms, using international standards and national standards, a modern scientific management as the goal, actively introduce advanced technology and equipment, the use of CNC machining to ensure accuracy and interchangeability Products , valve sealing the introduction of automatic welding equipment and high temperature wear-resistant cobalt-base Stellite hard alloy material, the valve can be assured that the main components and quality of physical and chemical properties.

本公司是生产锻钢系列阀门的专业公司，采用国际标准和各国家标准，以现代化科学管理为目标，积极引进国内外先进技术和设备，采用数控机床加工，确保产品精度与互换性，阀门密封采用自动堆焊设备和耐磨高温的司太钴基硬质合金材料，确实保证阀门主要零件的理化性能和质量。

Based on the characteristics of the chip we designed to control the hydraulic servo system for the core of this system, control circuit valve using digital potentiometer, through programming, automatic regulation resistance, high AD698 and accurately by an LVDT valve mechanical displacements converted single polarity dc voltage, through the simulation, the design of PID algorithm of closing valves, the degree of control system and superordination machine, realize the valve control circuit of adjustment and control.

基于上述特点我们设计了以单片机为控制核心的液压伺服阀控制电路，本系统采用数字电位器，通过编程自动调节电阻值，采用AD698 与LVDT 配合，高精确地将阀门的机械位移转换成单极性直流电压，通过模拟PID调节算法，设计实现了对阀门开合程度的控制，该系统与上位机进行通信，实现对阀门控制电路的调试及监控。

Wenzhou Hongyu Valves Manufacture Co.,Ltd. is specialized stainless steel manufacturer whichintegrate technology, production with trade. Depending on its technological resource with the title of stainless valve sylloge all along, the company has introduced high and new technology and equipment from abroad and specializes in foundry, processing and distribution.

温州市宏宇阀门制造有限公司是集科技、生产、贸易为一体的不锈钢阀门专业制造厂家，先后从国外引进高新技术与设备、依靠自身的科技资源、集铸造、加工、销售为一体，素有不锈钢阀门总汇之称。

Close the valve and put methylene blue into the bathtub, if there are blue water run out from the draining pipe and the valva is leaking can not keep the sealing performance

阀门漏水测试，将阀门关闭，放入亚甲基兰，测试结果排水管内流出兰色水，故此阀门漏水不能保证密封性能。

Inspect whether there is material in reaction kettle 3, and close all valves after inletting, then open the heating system and inlet valve and emptying valve of recovery tank to distill for dehydration.

检查3号反应釜是否已经进料，进料后关闭所有阀门，打开加热系统和回收罐进料阀门。放空阀门，进行蒸馏脱水。

In the event of damage, this maintenance-free valve can be factory reconditioned in order to maintain optimum serviceability and assure proper component isolation function.

万一阀门损坏，这种无需维护保养的阀门可以由工厂进行再调整，以便阀门保持最优的运行状态，并确保正确的隔离性能。

Specializing in the production of various high and medium pressure cylinder valves, pipeline valves, cryogenic storage tanks, low temperature cut-off valves, cryogenic liquid carburetor, gas pressure reducer, gas automatically switch boxes, concentrated gas installations, gas mixtures, and tempering to prevent devices, gas terminal box, automatic ignition, flame cutting torch, gas cylinder (seamless, welding, acetylene, liquefied petroleum, and natural gas) detection equipment and other products.

专业生产各种高中压气瓶阀门，管路阀门，低温储罐，低温截止阀门，低温液体汽化器，气体减压器，气体自动切换箱，集中供气装置，气体混配器，回火防止器，气体终端箱，自动点火装置，火焰割炬，气瓶（无缝，焊接，乙炔，液化石油器，天然气）检测成套设备等系列产品。

Keli De will air on the use of ammonia cylinder valve Rotarex 300 to replace all the valves, valve quality assurance.

科利德将液空使用的氨气钢瓶阀门全部替换为Rotarex 300的阀门，保证阀门质量。

Dynamic balance valve works By changing the balance of the spool valve to accommodate the overflow valve area before and after the change, to achieve the purpose of flow control.

动态平衡阀门的工作原理通过改变平衡阀门的阀芯的过流面积来适应阀门前后的变化，从而达到控制流量的目的。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。