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The French OTTO valve main product includes: Electrically operated valve, air operated valve, high temperature high pressure valve, ball valve, gate valve, reed valve, cut-off valve, check valve, regulating valve, solenoid valve, safety valve, needle valve, condensate trap | The draining valve, the stopcock, the diaphragm valve, the duck mouth valve, puts the material valve, the discharge valve, the respiration valve, the filter, the fire barrier, the throttle valve, the angle place valve, the by-pass valve, the wash water valve, the mud valve, the trip valve, the pressure relief valve, the tube to clamp the valve, the plunger valve, the bottom valve, to regard the mirror, the flange, the water power control valve, and so on serial productses.

法国OTTO奥托阀门主要产品有：电动阀门、气动阀门、高温高压阀门、球阀、闸阀、蝶阀、截止阀、止回阀、调节阀、电磁阀、安全阀、针型阀、疏水器|疏水阀、旋塞阀、隔膜阀、鸭嘴阀、放料阀、排气阀、呼吸阀、过滤器、阻火器、节流阀、角座阀、平衡阀、排污阀、排泥阀、切断阀、减压阀、管夹阀、柱塞阀、底阀、视镜、法兰、水力控制阀、等系列产品。欢迎来电定购进口阀门品牌/法国进口阀门/法国OTTO奥托阀门。

The South Korean JK valve main product includes: Electrically operated valve, air operated valve, high temperature high pressure valve, ball valve, gate valve, reed valve, cut-off valve, check valve, regulating valve, solenoid valve, safety valve, needle valve, condensate trap | The draining valve, the stopcock, the diaphragm valve, the duck mouth valve, puts the material valve, the discharge valve, the respiration valve, the filter, the fire barrier, the throttle valve, the angle place valve, the by-pass valve, the wash water valve, the mud valve, the trip valve, the pressure relief valve, the tube to clamp the valve, the plunger valve, the bottom valve, to regard the mirror, the flange, the water power control valve, and so on serial productses.

韩国JK朝光阀门主要产品有：球阀，闸阀，蝶阀，截止阀，止回阀，调节阀，旋塞阀，安全阀，电磁阀，柱塞阀，疏水器|疏水阀，呼吸阀，过滤器，阻火器，针型阀，排气阀，排污阀，排泥阀，放料阀，平衡阀，管夹阀，角座阀，隔膜阀，减压阀，底阀，视镜，水力控制阀，进口阀门等系列产品。欢迎来电定购进口阀门品牌/韩国进口阀门/韩国JK朝光阀门。

American VT the Foot valve international Limited company main product includes: Electrically operated valve, air operated valve, high temperature high pressure valve, ball valve, gate valve, reed valve, cut-off valve, check valve, regulating valve, solenoid valve, safety valve, needle valve, condensate trap | The draining valve, the stopcock, the diaphragm valve, the duck mouth valve, puts the material valve, the discharge valve, the respiration valve, the filter, the fire barrier, the throttle valve, the angle place valve, the by-pass valve, the wash water valve, the mud valve, the trip valve, the pressure relief valve, the tube to clamp the valve, the plunger valve, the bottom valve, to regard the mirror, the flange, the water power control valve, And so on serial productses.

美国VT富特阀门主要产品有：球阀，闸阀，蝶阀，截止阀，止回阀，调节阀，旋塞阀，安全阀，电磁阀，柱塞阀，疏水器|疏水阀，呼吸阀，过滤器，阻火器，针型阀，排气阀，排污阀，排泥阀，放料阀，平衡阀，管夹阀，角座阀，隔膜阀，减压阀，底阀，视镜，水力控制阀，进口阀门等系列产品。欢迎来电定购进口阀门品牌/美国进口阀门/美国VT富特阀门。

The British UK valve main product includes: Electrically operated valve, air operated valve, high temperature high pressure valve, ball valve, gate valve, reed valve, cut-off valve, check valve, regulating valve, solenoid valve, safety valve, needle valve, condensate trap | The draining valve, the stopcock, the diaphragm valve, the duck mouth valve, puts the material valve, the discharge valve, the respiration valve, the filter, the fire barrier, the throttle valve, the angle place valve, the by-pass valve, the wash water valve, the mud valve, the trip valve, the pressure relief valve, the tube to clamp the valve, the plunger valve, the bottom valve, to regard the mirror, the flange, the water power control valve, and so on serial productses.

英国 UK 优科阀门主要产品有：进口球阀，进口闸阀，进口蝶阀，进口截止阀，进口止回阀，进口调节阀，进口旋塞阀，，进口电磁阀，进口柱塞阀，进口疏水器|疏水阀，进口呼吸阀，进口过滤器，进口阻火器，进口针型阀，进口排气阀，进口排污阀，进口排泥阀，进口放料阀，进口平衡阀，进口管夹阀，进口角座阀，进口隔膜阀，进口减压阀，进口底阀，进口视镜，进口水力控制阀，进口阀门等系列产品。欢迎来电定购进口阀门品牌/英国进口阀门/英国 UK 优科阀门。

T he British UK valve main product includes: Electrically operatedvalve, air operated valve, high temperature high pressure valve, ball valve, gate valve, reed valve, cut-off valve, check valve, regulating valve, solenoid valve, safety valve, needle valve, condensate trap | The draining valve, the stopcock, the diaphragm valve, the duck mouth valve, puts the material valve, the discharge valve, the respiration valve, the filter, the fire barrier, the throttle valve, the angle place valve, the by-pass valve, the wash water valve, the mud valve, the trip valve, the pressure relief valve, the tube to clamp the valve, the plunger valve, the bottom valve, to regard the mirror, the flange, the water power control valve, and so on serial productses.

英国 UK 优科阀门主要产品有：进口球阀，进口闸阀，进口蝶阀，进口截止阀，进口止回阀，进口调节阀，进口旋塞阀，进口安全阀，进口电磁阀，进口柱塞阀，进口疏水器|疏水阀，进口呼吸阀，进口过滤器，进口阻火器，进口针型阀，进口排气阀，进口排污阀，进口排泥阀，进口放料阀，进口平衡阀，进口管夹阀，进口角座阀，进口隔膜阀，进口减压阀，进口底阀，进口视镜，进口水力控制阀，进口阀门等系列产品。欢迎来电定购进口阀门品牌/英国进口阀门/英国 UK 优科阀门。

After years of development, the product has 100 from monotony to diversification, seriation, fire hose, interior lining gun, fire hydrant, dc interface, fire hydrant box, reel, fire extinguisher box, outdoor fire hydrant, fire pump flow indicator, connectors.it, wet alarm valve, drench alarm valve, gate valve, signal, the signal is antivirus mask, air respirator, spraying nozzles, safety and emergency lights, explosion-proof lamp, floor drain etc categories of hundreds of specifications of products widely used in telecommunications, civil aviation, power, industry and real estate industry and other industries, experienced the test of time, market and the approval and favorable comment from user deeply.

经过多年的发展，百安的产品已从单一化到多元化、系列化发展，有衬里消防水带、室内消火栓、直流水枪、消防接口、消防卷盘、消火栓箱、灭火器箱、室外消火栓、消防水泵接合器、水流指示器、湿式报警阀、雨淋报警阀、信号蝶阀、信号闸阀、防毒面罩、正压式空气呼吸器、洒水喷头、安全标志灯、应急照明灯、防爆地漏等十几种大类数百种规格的产品群，广泛用于电信、民航、工业、电力、房地产业等各行各业，久经市场和时间的考验，深受用户的赞许和好评。

Subject Matter and Scope This standard specifies the flange and welded steel gate valves of the structure type, technology requirements.

主题内容与适用范围本标准规定了法兰和对焊连接钢制闸阀的结构型式、技术要求等。

Subject Matter and Scope This standard specifies the flange and welded steel gate valves of the structure type, technology requirements.

正题内容与适用范围本标准划定了法兰和对于焊连接钢制闸阀的结构型式、技术要求等。

Flange steel high-pressure valve connected to Nominal pressure PN10.0 ~ 25.0Mpa, operating temperature of -29 ~ 600 ℃ oil, chemical, fire station, and other conditions of the road, cutting off access or medium.

高压法兰连接钢制闸阀适用于公称压力PN10.0～25.0Mpa，工作温度—29～600℃的石油、化工、火力电站等各种工况的管路上，切断或接通介质。

Throttling is not recommended because partially open gate valves exhibit flow characteristics not conducive to accurate and consistent flow control.

不建议用于节流应用，因为部分开启的闸阀所表现的流量特性并不利于精确和一致的流量控制。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。