译文：
什么叫调节阀 　　ZJHP型气动单座调节阀 　　ZJHP型气动单座调节阀形小、体轻、高性能、大容量、是符合IEC标准的新一代通 用调节阀产品。它适用于一般流体介质和工艺条件生产过程控制系统。 　ZMAN(P)(M)气动薄膜调节阀 　ZMAN(P)(M)气动薄膜调节阀是普遍使用的一种气动执行器，它采用平衡式阀芯结构，轴向不平衡力小，稳定性好，阀杆不宜产生振动，允许压差大、噪音低、流通能力较大、适应性强而使于流量大、压差大、泄漏量要求不高的场合 　　ZJHP、ZJHM精小型气动薄膜直通单座、套筒调节阀 　　本系列产品有标准型、调节切断型、波纹管密封型、夹套保温型等多种品种。产品公称压力等级有PN16、40、64；公称通径范围DN20～300。适用液体温度由-200℃至+560℃范围内多种档次。泄漏量标准有Ⅳ级或Ⅵ级，流量特性为线性或等百分比。 　　ZMABP、ZMABN型气动薄膜直通双座调节阀 　　本系列产品有标准型、波纹管密封型、夹套保温型等多种品种。产品公称压力等级有PN16、40、64；阀体口径范围DN25～400。适用流体温度有-250℃～+560℃范围内多种档次。泄漏量标准为Ⅲ级和Ⅳ级。流量特性为线性或百分比。多种多样的品种 　　ZJHQ、ZJHX型气动薄膜三通合流、分流调节阀 　　本系列产品有三通合流及三通分流两种。公称压力有PN16、40、64；公称通径范围DN25—300。适用流体温度由-60℃至+450℃。泄漏量标准为Ⅳ级。流量特性有直线、抛物线两种。 　　ZXS型新系列气动薄膜角形单座调节阀 　　ZXS型新系列气动薄膜角形单座调节阀采用顶导向结构，配用多弹簧执行机构，具有结构紧凑、重量轻、动作灵敏、阀容量大、流体通道呈S流线型、压降损失小、阀容量大、流量特性xx、拆装方便等优点。 　　ZXX（Q）型气动簿膜三通高温调节阀 　　ZXX（Q）型气动簿膜三通高温调节阀采用贺筒型薄壁窗口形阀芯结构，不同于柱塞形阀芯的衬套导向。配用多弹簧执行机构，具有结构紧凑、重量轻、体积小、拆装方便等优点。 　　ZXN气动薄膜直通双座调节阀 　　ZXN型新系列气动薄膜双座调节阀采用双导向结构，配用多弹簧执行机构，具有结构紧凑、重量轻、动作灵敏、阀容量大、流量特性xx、拆装方便等优点。 　　ZXM气动薄膜直通套筒调节阀 　　ZXM型新系列气动薄膜套筒调节阀是一种压力平衡调节阀。配用多弹簧执行机构，总体机构紧凑、重量轻、稳定性好。流体通道呈S流线型、压降损失小，允许压差大，噪音小，流通能力大。 　　ZXP气动薄膜直通单座调节阀 　　ZXP型新系列气动薄膜直通单座调节阀采用顶导向结构，配用多弹簧执行机构。具有结构紧凑、重量轻、动作灵敏、流体通道呈S流线型、压降损失小、阀容量大、流量特性xx、拆装方便等优点。 什么叫隔离阀? 　　隔离阀在真空系统中的作用： 　　1.开关气路，当阀1和阀4关闭，阀2打开时，机械真空泵Ⅲ对容器I抽真空，气流流经预真空抽气管路；当阀2关闭，阀4打开时，机械泵可单独对扩散泵抽真空；当阀1和阀4同时打开时，扩散泵和机械泵可同时工作，对容器进行抽空，此时气流流经扩散泵。可见，阀门在这种操作中的作用是开关气路，改变气流的流经路线。 　　2.控制气流大小，调节真空度在图1中，调节阀1的阀盖开启角度，即可调节流经管路的气流量大小；关闭阀2和阀4，通过放气阀3可以给机械泵Ⅲ的入口放成大气；通过放气阀5可以调节容器内的真空度。 　　3.定量充气，在玻璃阀的柱塞上有个一定体积的小洞，当小洞转向右边和高压气瓶连通时，小洞中就可充满高压气体；当它转向左边和真空容器连通时，就把该体积的高压气体放进容器中去，这样就起到了定量充气的作用。 　　真空阀门的种类繁多，通常按阀门的职能、结构型式、驱动方式、材料和用途进行分类。

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原文：
What is the valve ZJHP single-seat pneumatic control valve ZJHP single-seat pneumatic control valve-shaped small, lightweight, high performance, large capacity, in line with IEC standards for next-generation general-purpose control valve products. It applies to general fluid media and process conditions of production process control system. ZMAN (P) (M) Pneumatic Diaphragm Control Valve ZMAN (P) (M) Pneumatic Diaphragm Valve is commonly used as a pneumatic actuator, which uses balanced valve structure, unbalanced axial force is small, good stability, the stem should not vibrate, allowing a large pressure difference , low noise, large flow capacity, adaptability Ershi in flow rate, pressure difference large, leakage less demanding situations ZJHP, ZJHM small air film refined through single seat, sleeve valve This series of products are standard, regulating off-type, bellows seal type, jacket type and many other varieties of insulation. Nominal grade products are PN16, 40,64; nominal diameter range of DN20 ~ 300. For the liquid temperature from -200 ℃ to +560 ℃ within the various grades. Leakage standards or grade Ⅳ Ⅵ level, flow characteristics such as linear or percentage. ZMABP, ZMABN pneumatic valve film through two-seater This series of products are the standard type, bellows seal type, jacket type and many other varieties of insulation. Product nominal pressure level of a PN16, 40,64; body diameter range of DN25 ~ 400. For fluid temperature -250 ℃ ~ +560 ℃ range of various grades. Standard leakage Ⅲ and Ⅳ. Linear or percentage flow characteristics. Variety of species ZJHQ, ZJHX type pneumatic film links confluence, shunt valve This series has three links and three links streaming confluence of two. Nominal pressure with PN16, 40,64; range of nominal diameter DN25-300. For fluid temperature from -60 ℃ to +450 ℃. Leakage standard Ⅳ. Flow characteristics are linear, parabolic two. ZXS new series of pneumatic film-type angular single-seat control valve ZXS new series of pneumatic film-type single-seat control valve angular orientation with the top structure, equipped with multi-spring actuator, with a compact, light weight, sensitive, valve capacity, streamline flow channel was S, the pressure drop is small, valve capacity Large, accurate flow characteristics, and easy disassembly. ZXX (Q)-type high temperature pneumatic valves book films links ZXX (Q) Three high-temperature membrane-type pneumatic valves book by HE cylinder-shaped valve type thin window structure, different from the spool-shaped piston guide bushing. Equipped with multi-spring actuator, with a compact, light weight, small size and easy disassembly. ZXN film through engine air control valve ZXN new series of pneumatic film double-seat type valve dual-oriented structure and is equipped with multi-spring actuator, with a compact, light weight, sensitive, valve capacity, flow characteristics of precision, and easy disassembly. ZXM films through pneumatic control valve sleeve ZXM new series of pneumatic film sleeve-type valve is a pressure balance valve. Equipped with multi-spring actuator, generally compact, light weight and good stability. S fluid channel was streamlined, the pressure drop, allowing the pressure large, low noise, large flow capacity. ZXP films through single-seat pneumatic control valve ZXP-type new series of pneumatic film through single-seat control valve driven by the top structure, equipped with multi-spring actuator. With a compact, light weight, sensitive, fluid channel S was streamlined, the pressure drop is small, valve capacity, flow characteristics of precision, and easy disassembly. What is the isolation valve? Isolation valve in the vacuum system's role: 1,. Switch gas path, when the valve 1 and valve 4 closed, valve 2 is open, the container I Ⅲ mechanical vacuum pump vacuum, air flows through the pre-vacuum exhaust pipe; when the valve 2 closed and valve 4 open, the mechanical pump can be separate diffusion pump vacuum; when the valve 1 and valve 4 is open at the same time, diffusion pumps and mechanical pumps can work simultaneously on the container for taking the time, air flows through the diffusion pump at this time. Can be seen that the valve in this operation is the role of gas line switch to change the air flow flowing through the line. 2. Control the flow size, the vacuum regulator in Figure 1, the control valve 1, valve cover opening angle, you can adjust the gas flow flowing through the pipe size; close the valve 2 and valve 4, through the discharge valve 3 can be a mechanical pump Ⅲ entrance put into the atmosphere; through the discharge valve 5 can be adjusted within the vacuum container. 3. Quantitative inflated, the valve plunger in the glass have a certain volume of the hole, when the hole to the right and the high-pressure gas cylinders connected, the holes can be filled in the high-pressure gas; when it is connected to the left and the vacuum vessel time, put the volume to high pressure gas into the container, so that played a role in quantitative inflation. A wide range of vacuum valves, usually by the valve function, structure type, drive mode, and use of classified material.