閥門是用來開閉管路、控制流向、調(diào)節(jié)和控制輸送介質(zhì)的參數(shù)（溫度、壓力和流量）的管路附件。閥門行業(yè)專業(yè)術(shù)語，你全知道嗎？基本專業(yè)術(shù)語

　　Valves are pipeline accessories used to open and close pipelines, control flow direction, regulate and control the parameters of the conveying medium (temperature, pressure, and flow). Do you know all the professional terms in the valve industry? Basic professional terminology

　　1、強(qiáng)度性能

　　1. Strength performance

　　閥門的強(qiáng)度性能是指閥門承受介質(zhì)壓力的能力。閥門是承受內(nèi)壓的機(jī)械產(chǎn)品，因而必須具有足夠的強(qiáng)度和剛度，以保證長期使用而不發(fā)生破裂或產(chǎn)生變形。

　　The strength performance of a valve refers to its ability to withstand medium pressure. Valves are mechanical products that withstand internal pressure, and therefore must have sufficient strength and stiffness to ensure long-term use without rupture or deformation.

　　2、密封性能

　　2. Sealing performance

　　閥門的密封性能是指閥門各密封部位阻止介質(zhì)泄漏的能力，它是閥門最重要的技術(shù)性能指標(biāo)。

　　The sealing performance of a valve refers to the ability of each sealing part of the valve to prevent medium leakage, and it is the most important technical performance indicator of the valve.

　　閥門的密封部位有三處：啟閉件與閥座兩密封面間的接觸處；填料與閥桿和填料函的配和處；閥體與閥蓋的連接處。其中前一處的泄漏叫做內(nèi)漏，也就是通常所說的關(guān)不嚴(yán)，它將影響閥門截?cái)嘟橘|(zhì)的能力。

　　There are three sealing parts of the valve: the contact between the opening and closing parts and the sealing surface of the valve seat; The matching of packing with valve stem and packing box; The connection between the valve body and the valve cover. The leakage in the first part is called internal leakage, which is commonly referred to as not being tightly closed, and it will affect the valve's ability to cut off the medium.

　　對于截?cái)嚅y類來說，內(nèi)漏是不允許的。后兩處的泄漏叫做外漏，即介質(zhì)從閥內(nèi)泄漏到閥外。外漏會(huì)造成物料損失，污染環(huán)境，嚴(yán)重時(shí)還會(huì)造成事故。

　　For block valves, internal leakage is not allowed. The leakage in the last two places is called external leakage, which means that the medium leaks from inside the valve to outside. External leakage can cause material loss, environmental pollution, and in severe cases, accidents.

　　對于易燃易爆、有毒或有放射的介質(zhì)，外漏更是不能允許的，因而閥門必須具有可靠的密封性能。

　　For flammable, explosive, toxic or radioactive media, leakage is not allowed, so valves must have reliable sealing performance.

　　3、流動(dòng)介質(zhì)

　　3. Flowing medium

　　介質(zhì)流過閥門后會(huì)產(chǎn)生壓力損失（既閥門前后的壓力差），也就是閥門對介質(zhì)的流動(dòng)有一定的阻力，介質(zhì)為克服閥門的阻力就要消耗一定的能量。

　　After the medium flows through the valve, there will be pressure loss (i.e. the pressure difference before and after the valve), which means that the valve has a certain resistance to the flow of the medium. To overcome the resistance of the valve, the medium needs to consume a certain amount of energy.

　　從節(jié)約能源上考慮，設(shè)計(jì)和制造閥門時(shí)，要盡可能降低閥門對流動(dòng)介質(zhì)的阻力。

　　From the perspective of energy conservation, when designing and manufacturing valves, the resistance of the valve to the flowing medium should be minimized as much as possible.

　　4、啟閉力和啟閉力矩

　　4. Opening and closing force and torque

　　啟閉力和啟閉力矩是指閥門開啟或關(guān)閉所必須施加的作用力或力矩。

　　The opening and closing force and torque refer to the force or torque that must be applied to open or close a valve.

　　關(guān)閉閥門時(shí)，需要使啟閉件與發(fā)座兩密封面間形成一定的密封比壓，同時(shí)還要克服閥桿與填料之間、閥桿與螺母的螺紋之間、閥桿端部支承處及其他磨擦部位的摩擦力，因而必須施加一定的關(guān)閉力和關(guān)閉力矩，閥門在啟閉過程中，所需要的啟閉力和啟閉力矩是變化的，其最大值是在關(guān)閉的最終瞬時(shí)或開啟的最初瞬時(shí)。設(shè)計(jì)和制造閥門時(shí)應(yīng)力求降低其關(guān)閉力和關(guān)閉力矩。

　　When closing the valve, it is necessary to establish a certain sealing pressure between the opening and closing parts and the sealing surface of the seat. At the same time, it is necessary to overcome the frictional forces between the valve stem and the packing, the threads between the valve stem and the nut, the end support of the valve stem, and other friction parts. Therefore, a certain closing force and closing torque must be applied. During the opening and closing process of the valve, the required opening and closing force and torque vary, and the maximum value is at the final moment of closing or the initial moment of opening. When designing and manufacturing valves, efforts should be made to reduce their closing force and closing torque.

　　5、啟閉速度

　　5. Opening and closing speed

　　啟閉速度是用閥門完成一次開啟或關(guān)閉動(dòng)作所需的時(shí)間來表示。一般對閥門的啟閉速度無嚴(yán)格要求，但有些工況對啟閉速度有特殊要求，如有的要求迅速開啟或關(guān)閉，以防發(fā)生事故，有的要求緩慢關(guān)閉，以防產(chǎn)生水擊等，這在選用閥門類型時(shí)應(yīng)加以考慮。

　　The opening and closing speed is expressed as the time required for a valve to complete one opening or closing action. There are generally no strict requirements for the opening and closing speed of valves, but some operating conditions have special requirements for the opening and closing speed. Some require quick opening or closing to prevent accidents, while others require slow closing to prevent water hammer. This should be considered when selecting valve types.

　　6、動(dòng)作靈敏度和可靠性

　　6. Action sensitivity and reliability

　　這是指閥門對于介質(zhì)參數(shù)變化，做出相應(yīng)反應(yīng)的敏感程度。對于節(jié)流閥、減壓閥、調(diào)節(jié)閥等用來調(diào)節(jié)介質(zhì)參數(shù)的閥門以及安全閥、疏水閥等具有特定功能的閥門來說，其功能靈敏度與可靠性是十分重要的技術(shù)性能指標(biāo)。

　　This refers to the sensitivity of valves to changes in medium parameters and their corresponding responses. For valves such as throttle valves, pressure reducing valves, and regulating valves used to adjust medium parameters, as well as valves with specific functions such as safety valves and drain valves, their functional sensitivity and reliability are very important technical performance indicators.

　　7、使用壽命

　　7. Service life

　　它表示閥門的耐用程度，是閥門的重要性能指標(biāo)，并具有很大的經(jīng)濟(jì)意義。通常以能保證密封要求的啟閉次數(shù)來表示，也可以用使用時(shí)間來表示。

　　It represents the durability of the valve, is an important performance indicator of the valve, and has great economic significance. It is usually expressed in terms of the number of opening and closing times that can ensure the sealing requirements, or it can be expressed in terms of usage time.

　　8、類型（type）

　　8. Type (type)

　　按用途或主要結(jié)構(gòu)特點(diǎn)對閥門的分類

　　Classification of valves by purpose or main structural characteristics

　　9、型號（model）

　　9. Model (model)

　　按類型、傳動(dòng)方式、連接形式、結(jié)構(gòu)特點(diǎn)、閥座密封面材料和公稱壓力等對閥門的編號。

　　Number valves according to type, transmission method, connection form, structural characteristics, valve seat sealing surface material, and nominal pressure.

　　10、連接尺寸（connection dimensions）

　　10. Connection dimensions

　　閥門和管道連接部位的尺寸

　　Dimensions of valve and pipeline connection parts

　　11、主要外形尺寸（general dimensions）

　　11. Main external dimensions

　　閥門的開啟和關(guān)閉高度、手輪直徑以及連接尺寸等。

　　The opening and closing height, handwheel diameter, and connection size of the valve.

　　12、連接形式（type of connection）

　　12. Type of connection

　　閥門與管道或機(jī)器設(shè)備的連接所采用的各種方式(如法蘭連接\螺紋連接\焊接連接等）。

　　The various methods used to connect valves to pipelines or machinery equipment, such as flange connections, threaded connections, welded connections, etc.

　　13、密封試驗(yàn)（seal test）

　　13. Seal test

　　檢驗(yàn)啟閉件和閥體密封副性能的試驗(yàn)。

　　Test to verify the sealing performance of the opening and closing components and valve body.

　　14、上密封試驗(yàn)（back seal test）

　　14. Back seal test

　　檢驗(yàn)閥桿與閥蓋密封副密封性能的試驗(yàn)。

　　Test to verify the sealing performance of the valve stem and valve cover sealing pair.

　　15、密封試驗(yàn)壓力（seal test pressure）

　　15. Seal test pressure

　　閥門進(jìn)行密封試驗(yàn)時(shí)規(guī)定的壓力。

　　The pressure specified during the sealing test of the valve.

　　16、適用介質(zhì) （suitable medium）

　　16. Suitable medium

　　閥門能適用的介質(zhì)。

　　The medium that the valve can be applied to.

　　17、適用溫度 （suitable temperature）

　　17. Suitable temperature

　　閥門適用的介質(zhì)的溫度范圍。

　　The temperature range of the medium suitable for the valve.

　　18、密封面（sealing face）

　　18. Sealing face

　　啟閉件與閥座（閥體）緊密貼合，起密封作用的兩個(gè)接觸面。

　　The two contact surfaces between the opening and closing components and the valve seat (valve body) are tightly adhered, providing a sealing effect.

　　19、啟閉件 （disc）

　　19. Opening and closing components (disc)

　　用于截?cái)嗷蛘{(diào)節(jié)介質(zhì)流通的一種零件的統(tǒng)稱，如閘閥中的閘板、節(jié)流閥中的閥瓣等。

　　A general term for a component used to cut off or regulate the flow of a medium, such as the gate in a gate valve or the valve disc in a throttle valve.

　　20、填料（packing）

　　20. Packing

　　裝入填料函（或填料箱）中，阻止介質(zhì)從閥桿處泄漏的填充物。

　　Fill the stuffing box (or stuffing box) to prevent the medium from leaking from the valve stem.

　　21、填料墊（packing seat）

　　21. Packing seal

　　支承填料，保持填料密封的零件。

　　Components that support packing and maintain packing sealing.

　　22、填料壓蓋(gland)

　　22. Packing gland

　　用以壓緊填料達(dá)到密封的零件。

　　A component used to compress packing to achieve sealing.

　　23、支架(yoke)

　　23. Bracket (yoke)

　　在閥蓋或閥體上，用于支承閥桿螺母和傳動(dòng)機(jī)構(gòu)的零件。

　　A component used to support the valve stem nut and transmission mechanism on the valve cover or body.

　　24、連接槽尺寸(dimension of connecting channel)

　　24. Dimension of connecting channel

　　啟閉件與閥桿裝配連接部位的結(jié)構(gòu)尺寸。

　　The structural dimensions of the connection between the opening and closing components and the valve stem assembly.

　　25、流道面積( flow area)

　　25. Flow area

　　指閥門進(jìn)口端到閥座密封面間的最小截面積（但不是指“簾”面積），用來計(jì)算無任何阻力影響時(shí)的理論排量。

　　The minimum cross-sectional area between the inlet end of the valve and the sealing surface of the valve seat (but not the "curtain" area) is used to calculate the theoretical displacement without any resistance effect.

　　26、流道直徑 (flow diameter)

　　26. Flow diameter

　　對應(yīng)于流道面積的直徑。

　　The diameter corresponding to the flow channel area.

　　27、流量特性 (flow characteristics)

　　27. Flow characteristics

　　穩(wěn)定流動(dòng)狀態(tài)下，當(dāng)進(jìn)口壓力等參數(shù)不變時(shí)，減壓閥的出口壓力與流量的函數(shù)關(guān)系。

　　The functional relationship between the outlet pressure and flow rate of a pressure reducing valve in a stable flow state when parameters such as inlet pressure remain constant.

　　28、流量特性偏差(flow characteristics derivation)

　　28. Flow characteristics derivation

　　穩(wěn)定流動(dòng)狀態(tài)下，當(dāng)進(jìn)口壓力等參數(shù)不變時(shí)，減壓閥流量的變化所引起的出口壓力變化值。

　　The change in outlet pressure caused by the change in flow rate of the pressure reducing valve under stable flow conditions, when parameters such as inlet pressure remain unchanged.

　　29、通用閥門 (general valve)

　　29. General valve

　　各工業(yè)企業(yè)中管道上普遍采用的閥門。

　　Valves commonly used on pipelines in various industrial enterprises.

　　30、自動(dòng)閥門 (Self-acting valve)

　　30. Self active valve

　　依靠介質(zhì)（液體、空氣、蒸汽等）本身的能力而自行動(dòng)作的閥門。

　　A valve that operates on its own by relying on the ability of the medium (liquid, air, steam, etc.).

　　31、驅(qū)動(dòng)閥門 (Actuated valve)

　　31. Activated valve

　　借助手動(dòng)、電力、液壓或氣壓來操縱的閥門。

　　Valves operated by manual, electric, hydraulic, or pneumatic means.

　　32、撞擊手輪 (hammer blow handwheel)

　　32. Hammer blow handwheel

　　利用撞擊作用力以減輕閥門操作力的手輪結(jié)構(gòu)。

　　A handwheel structure that utilizes impact force to reduce valve operating force.

　　33、蝸輪傳動(dòng)裝置(wormgear actuator)

　　33. Worm gear actuator

　　用蝸輪機(jī)構(gòu)啟閉或調(diào)節(jié)閥門的裝置。

　　A device that uses a worm gear mechanism to open, close, or adjust valves.

　　34、氣動(dòng)裝置 (pneumatic actuator)

　　34. Pneumatic actuator

　　用氣壓力啟閉或調(diào)節(jié)閥門的驅(qū)動(dòng)裝置。

　　The driving device for opening, closing or regulating valves with air pressure.

　　35、液動(dòng)裝置 (hydraulic actuator)

　　35. Hydraulic actuator

　　用液壓力啟閉或調(diào)節(jié)閥門的驅(qū)動(dòng)裝置。

　　The driving device for opening, closing or regulating valves with hydraulic pressure.

　　36、熱凝結(jié)水排量(Hot condensate capacity)

　　36. Hot condensate capacity

　　在給定壓差和溫度下疏水閥一內(nèi)能排出凝結(jié)水的最大量

　　The maximum amount of condensate that can be discharged from a drain valve at a given pressure difference and temperature

　　37、漏汽量 (Steam loss)

　　37. Steam loss

　　單位時(shí)間內(nèi)疏水閥漏出新鮮蒸汽的量。

　　The amount of fresh steam leaked from the drain valve per unit time.

　　閥門定義術(shù)語

　　Valve definition terminology

　　1.閥門(valve)

　　1. Valve

　　用來控制管道內(nèi)介質(zhì)流動(dòng)的，具有可動(dòng)機(jī)構(gòu)的機(jī)械產(chǎn)品的總體。

　　The overall mechanical product with a movable mechanism used to control the flow of media in pipelines.

　　2.閘閥(gate valve, slide valve)

　　2. Gate valve (slide valve)

　　啟閉件(閘板)由閥桿帶動(dòng),沿閥座(密封面)作升降運(yùn)動(dòng)的閥門。

　　The opening and closing element (gate) is a valve driven by the valve stem and moves up and down along the valve seat (sealing surface).

　　3.截止閥(globe valve, stop valve)

　　3. Globe valve (stop valve)

　　啟閉式（閥瓣）由閥桿帶動(dòng)，沿閥座（密封面）軸線作升降運(yùn)動(dòng)的閥門。

　　Open close type (valve disc) is a valve driven by the valve stem and moves up and down along the axis of the valve seat (sealing surface).

　　4.節(jié)流閥 (throttle valve)

　　4. Throttle valve

　　通過啟閉件（閥瓣）改變通路截面積，以調(diào)節(jié)流量、壓力的閥門。

　　A valve that adjusts flow and pressure by changing the cross-sectional area of the passage through opening and closing components (valve discs).

　　5.球閥 (ball valve)

　　5. Ball valve

　　啟閉式（球體）繞垂直于通路的曲線旋轉(zhuǎn)的閥門。

　　A valve that rotates around a curve perpendicular to the passage in a spherical manner.

　　6.蝶閥 (butterfly valve)

　　6. Butterfly valve

　　啟閉式（蝶板）繞固定軸旋轉(zhuǎn)的閥門。

　　A valve with a butterfly plate that rotates around a fixed axis.

　　7.隔膜閥 (diaphragm valve)

　　7. Diaphragm valve

　　啟閉式（隔膜）由閥桿帶動(dòng)，沿閥桿軸線作升降運(yùn)動(dòng)，并將動(dòng)作機(jī)構(gòu)與介質(zhì)隔開的閥門。

　　Open close type (diaphragm) is a valve driven by the valve stem, which moves up and down along the axis of the valve stem and separates the action mechanism from the medium.

　　8.旋塞閥 (cock)

　　8. Cock valve

　　啟閉式（塞子）繞其軸線旋轉(zhuǎn)的閥門。

　　A valve with a plug that rotates around its axis.

　　9.止回閥(check valve, non-return valve)

　　9. Check valve (non return valve)

　　啟閉式（閥瓣）借介質(zhì)作用力，自動(dòng)阻止介質(zhì)逆流的閥門。

　　Open close type (valve disc) is a valve that automatically prevents the reverse flow of the medium by utilizing the force of the medium.

　　10.安全閥(safety valve, relief valve)

　　10. Safety valve, relief valve

　　啟閉式（閥瓣）當(dāng)管道或機(jī)器設(shè)備內(nèi)介質(zhì)壓力超過規(guī)定值時(shí)自動(dòng)開啟排放；低于規(guī)定值時(shí)自動(dòng)關(guān)閉，對管道或機(jī)器起保護(hù)作用的閥門。

　　Open close type (valve disc) automatically opens for discharge when the pressure of the medium in the pipeline or machinery exceeds the specified value; A valve that automatically closes when it falls below the specified value, providing protection for pipelines or machines.

　　11.減壓閥(pressure reducing valve)

　　11. Pressure reducing valve

　　通過啟閉件（閥瓣）的節(jié)流，將介質(zhì)壓力降低，并借閥后壓力的直接作用，使閥后壓力自動(dòng)保持在一定范圍內(nèi)的閥門。

　　A valve that reduces the pressure of the medium by throttling the opening and closing components (valve discs), and automatically maintains the pressure within a certain range through the direct action of the pressure behind the valve.

　　12.疏水閥(steam trap)

　　12. Steam trap

　　自動(dòng)排放凝結(jié)水并阻止蒸汽泄漏的閥門。

　　A valve that automatically discharges condensed water and prevents steam leakage.

　　13.排污閥(Draining Valves)

　　13. Drainage Valves

　　用于鍋爐、壓力容器等設(shè)備排污的閥門。

　　Valves used for discharging pollutants from boilers, pressure vessels, and other equipment.

　　14.低壓閥門(low pressure valve)

　　14. Low pressure valve

　　公稱壓力PN≤1.6MPa的各種閥門。

　　Various valves with nominal pressure PN ≤ 1.6MPa.

　　15.中壓閥門(middle pressure valve)

　　15. Middle pressure valve

　　公稱壓力為PN≥2.0～PN＜10.0MPa的各種閥門。

　　Various valves with nominal pressure ranging from PN ≥ 2.0 to PN ＜ 10.0MPa.

　　16.高壓閥門(high pressure valve)

　　16. High pressure valve

　　公稱壓力PN≥10.0MPa的各種閥門。

　　Various valves with nominal pressure PN ≥ 10.0MPa.

　　17.超高壓閥門(super high pressure valve)

　　17. Super high pressure valve

　　公稱壓力PN≥100.0MPa的各種閥門。

　　Various valves with nominal pressure PN ≥ 100.0MPa.

　　18.高溫閥門(high temperature valve)

　　18. High temperature valve

　　用于介質(zhì)溫度＞450℃的各種閥門。

　　Used for various valves with medium temperature>450 ℃.

　　19.低溫閥門(sub-zero valve)

　　19. Low temperature valve (sub zero valve)

　　用于介質(zhì)溫度為-40℃～-100℃的各種閥門。

　　Used for various valves with medium temperatures ranging from -40 ℃ to -100 ℃.

　　20.超低溫閥門(cryogenic valve)

　　20. Cryogenic valve

　　用于介質(zhì)溫度＜-100℃的各種閥門。閥門結(jié)構(gòu)術(shù)語

　　Used for various valves with medium temperature<-100 ℃. Valve structure terminology

　　1.結(jié)構(gòu)長度（face-to-face dimension, face-to-centre dimension）

　　1. Structural length (face to face dimension, face to center dimension)

　　閥門進(jìn)、出口端面之間的距離；或進(jìn)口端面至出口軸線的距離。

　　The distance between the inlet and outlet end faces of the valve; Or the distance from the inlet end face to the outlet axis.

　　2.直通式閥門結(jié)構(gòu)長度（through way type of valves Face to face dimensions）

　　2. Through way type of valve face to face dimensions

　　在閥體通道終端兩個(gè)垂直于閥門軸線平面之間的距離。

　　The distance between two planes perpendicular to the valve axis at the end of the valve body channel.

　　3.角式閥門結(jié)構(gòu)長度（angle type of valves Face to face,end to end, center to face and centerto end dimensions）

　　3. Angle type of valve face to face, end to end, center to face and center end dimensions

　　在閥體通道某一終端垂直于軸線的平面與閥體另一終端軸線之間的距離。

　　The distance between the plane perpendicular to the axis at one end of the valve body channel and the axis at the other end of the valve body.

　　4.結(jié)構(gòu)形式（type of construction）

　　4. Type of construction

　　各類閥門在結(jié)構(gòu)和幾何形狀上的主要特征。

　　The main characteristics of various types of valves in terms of structure and geometric shape.

　　5.直通式（through way type）

　　5. Through way type

　　進(jìn)、出口軸線重合或相互平行的閥體形式。

　　The valve body form in which the inlet and outlet axes coincide or are parallel to each other.

　　6.角式（angle type）

　　6. Angle type

　　進(jìn)、出口軸線相互垂直的閥體形式。

　　The valve body form with inlet and outlet axes perpendicular to each other.

　　7.直流式（y-globe type, y-type,diaphragm type）

　　7. DC type (y-globe type, y-type, diaphragm type)

　　通路成一直線，閥桿位置與閥體通路軸線成銳角的閥體形式。

　　A valve body form in which the passage is in a straight line and the position of the valve stem is at an acute angle to the axis of the valve body passage.

　　8.三通式（three way type）

　　8. Three way type

　　具有三個(gè)通路方向的閥體形式。

　　A valve body with three directions of passage.

　　9.T形三通式（T-pattern three way）

　　9. T-pattern three way

　　塞子（或球體）的通路呈“T”璩 的三通式。

　　The pathway of a plug (or sphere) follows a three-way formula of "T".

　　10.L形三通式（L-pattern three way）

　　10. L-pattern three way

　　塞子（或球體）的通路呈“L”璩 的三通式。

　　The pathway of a plug (or sphere) follows a three part formula of "L".

　　11.平衡式（balance type）

　　11. Balance type

　　利用介質(zhì)壓力平衡其對閥桿的軸向力的結(jié)構(gòu)形式。

　　The structural form of using medium pressure to balance its axial force on the valve stem.

　　12.杠桿式（lever type）

　　12. Lever type

　　采用杠桿帶動(dòng)啟閉件的結(jié)構(gòu)形式。

　　The structure adopts a lever driven opening and closing element.

　　13.常開式（normally open type）

　　13. Normally open type

　　無外力作用時(shí)，啟閉件自動(dòng)處于開啟位置的結(jié)構(gòu)形式。

　　The structural form in which the opening and closing components are automatically in the open position when there is no external force acting.

　　14.常閉式（normally closed type）

　　14. Normally closed type

　　無外力作用時(shí)，啟閉件自動(dòng)處于關(guān)閉位置的結(jié)構(gòu)形式。

　　The structural form in which the opening and closing components are automatically in the closed position when there is no external force acting.

　　15.保溫式（steam jacket type）

　　15. Insulated (Steam Jacket Type)

　　帶有蒸汽加熱夾套結(jié)構(gòu)的各種閥門。

　　Various valves with steam heating jacket structure.

　　16.波紋管式（bellows seal type）

　　16. Bellows seal type

　　帶有波紋管結(jié)構(gòu)的各種閥門。

　　Various valves with corrugated pipe structure.

　　17.全徑閥門 （full-opening valve）

　　17. Full opening valve

　　閥門內(nèi)所有部位流道內(nèi)徑尺寸與公稱管道內(nèi)徑尺寸相同的閥門。

　　Valves with the same inner diameter as the nominal pipe diameter for all parts of the flow channel inside the valve.

　　18.縮徑閥門（reduced-opening valve）

　　18. Reduced opening valve

　　閥門內(nèi)流道孔通徑縮小的閥門。

　　A valve with a reduced diameter of the inner channel hole.

　　19.縮口閥門（reduced-bore valve）

　　19. Reduced body valve

　　閥門內(nèi)流道孔通徑縮小，且閥門關(guān)閉件流道口為非圓形的閥門。

　　The diameter of the flow channel hole inside the valve is reduced, and the flow channel port of the valve closure is non-circular.

　　20.單向閥門（un-directional valve）

　　20. Unidirectional valve

　　設(shè)計(jì)為僅一個(gè)介質(zhì)流動(dòng)方向密封的閥門。

　　A valve designed to seal in only one direction of medium flow.

　　21.雙向閥門（bi-directional valve）

　　21. Bidirectional valve

　　設(shè)計(jì)為兩個(gè)介質(zhì)流動(dòng)方向均密封的閥門。

　　Designed as a valve that seals in both directions of medium flow.

　　22.雙座雙向閥門（twin-seat, both seats bi-directional, valve）

　　22. Twin seat, both seats bi directional, valve

　　閥門有兩個(gè)密封座，每個(gè)閥座的兩個(gè)介質(zhì)流動(dòng)方向均可密封的閥門。

　　A valve has two sealing seats, and each seat can seal both directions of medium flow.

　　23.一單向座、一雙向座的雙座閥（twin-seat, one seat un-directional and one seatsbi-directional, valve）

　　23. Twin seat, one seat un directional and one seat bi directional valves

　　具有兩個(gè)密封副的閥門，在關(guān)閉位置時(shí)，兩個(gè)密封副可同時(shí)保持密封狀態(tài)，中腔內(nèi)（兩個(gè)密封副間）的閥體有一個(gè)泄放介質(zhì)壓力的接口。表示符號DBB。

　　A valve with two sealing pairs can maintain a sealed state simultaneously when in the closed position. The valve body in the middle chamber (between the two sealing pairs) has an interface for releasing medium pressure. Representing the symbol DBB.

　　24.上密封（back seat, back face）

　　24. Back seal, back face

　　當(dāng)閥門全開時(shí)，阻止介質(zhì)由填料函處滲漏的一種密封結(jié)構(gòu)。

　　A sealing structure that prevents medium leakage from the packing box when the valve is fully opened.

　　25.壓自封（pressure seal）

　　25. Pressure seal

　　利作介質(zhì)壓力使閥體與閥蓋連接處實(shí)現(xiàn)自動(dòng)密封的結(jié)構(gòu)。

　　The structure that utilizes medium pressure to achieve automatic sealing at the connection between the valve body and the valve cover.

　　26.閥桿頭部尺寸（dimension of valve stem head）

　　26. Dimension of valve stem head

　　閥桿與手輪、手柄或其它操縱機(jī)械裝配連接部位的結(jié)構(gòu)尺寸。

　　The structural dimensions of the connection between the valve stem and the handwheel, handle, or other mechanical assembly parts.

　　27.閥桿端部尺寸（dimension of valve stem end）

　　27. Dimension of valve stem end

　　閥桿與啟閉件連接部位的結(jié)構(gòu)尺寸。

　　The structural dimensions of the connection between the valve stem and the opening and closing components.

　　28.連接槽尺寸（dimension of connecting channel）

　　28. Dimension of connecting channel

　　啟閉件與閥桿裝配連接部位的結(jié)構(gòu)尺寸。

　　The structural dimensions of the connection between the opening and closing components and the valve stem assembly.

　　29.連接形式（type of connection）

　　29. Type of connection

　　閥門與管道或機(jī)器設(shè)備的連接所采用的各種方式（如法蘭連接、螺紋連接、焊接連接等）。閥門零部件術(shù)語

　　The various methods used to connect valves to pipelines or machinery equipment, such as flange connections, threaded connections, welded connections, etc. Terminology of valve components

　　1.閥體（body）

　　1. Valve body

　　與管道（或機(jī)器設(shè)備）直接連接，構(gòu)成介質(zhì)流通流道的零件。

　　A component directly connected to a pipeline (or machinery) to form a medium flow channel.

　　2.閥蓋（bonnet, cover, cap, lid）

　　2. Bonnet, cover, cap, lid

　　與閥體相連并與閥體（或通過其它零件，如隔膜等）構(gòu)成壓力腔的主要零件。

　　The main component connected to the valve body and forming a pressure chamber with the valve body (or through other parts such as diaphragms).

　　3.啟閉件（disc）

　　3. Opening and closing components (disc)

　　用于截?cái)嗷蛘{(diào)節(jié)介質(zhì)流通的一種零件的統(tǒng)稱，如閘閥中的閘板、節(jié)流閥中的閥瓣等。

　　A general term for a component used to cut off or regulate the flow of a medium, such as the gate in a gate valve or the valve disc in a throttle valve.

　　4.閥瓣（disc）

　　4. Valve disc (disc)

　　截止閥、節(jié)流閥、止回閥等閥門中的啟閉件。

　　The opening and closing components in valves such as globe valves, throttle valves, and check valves.

　　5.閥座（bodyseat ring, shoulder seated, bottom seat）

　　5. Body eat ring, should seat, bottom seat

　　安裝在閥體上，與啟閉件組成密封副的零件。

　　A component installed on the valve body and forming a sealing pair with the opening and closing parts.

　　6.密封面（sealing face）

　　6. Sealing face

　　啟閉件與閥座（閥體）緊密貼合，起密封作用的兩個(gè)接觸面。

　　The two contact surfaces between the opening and closing components and the valve seat (valve body) are tightly adhered, providing a sealing effect.

　　7.閥桿（stem, apindle）

　　7. Stem and spine

　　將啟閉力傳遞到啟閉件上的主要零件。

　　The main components that transmit the opening and closing force to the opening and closing parts.

　　8.閥桿螺母（yoke bushing, yoke nut）

　　8. Valve stem nut (yoke bushing, yoke nut)

　　與閥桿螺紋構(gòu)成運(yùn)動(dòng)副的零件。

　　A component that forms a motion pair with the valve stem thread.

　　9.填料函

　　9. Packing box

　　在閥蓋（或閥體）上， 充填填料，用來阻止介質(zhì)由閥桿處泄漏的一種結(jié)構(gòu)。

　　A structure that fills the valve cover (or valve body) with packing to prevent medium leakage from the valve stem.

　　10.填料箱（stuffing box）

　　10. Stuffing box

　　充填填料，阻止介質(zhì)自閥桿處泄漏的零件。

　　Fill the filling material to prevent the leakage of the medium from the valve stem.

　　11.填料壓蓋（gland, gland flange, pne-piece glang）

　　11. Packing gland (glass, glass flange, pne leather gland)

　　用以壓緊填料達(dá)到密封的零件。

　　A component used to compress packing to achieve sealing.

　　12.填料（packing,packing rings）

　　12. Packing (packing rings)

　　裝入填料函（或填料箱）中，阻止介質(zhì)雙閥桿處泄漏的填充物。

　　Fill the packing box (or stuffing box) with filling material to prevent leakage at the double valve stem of the medium.

　　13.填料墊（packing seat, packing washer）

　　13. Packing seal, packing washer

　　支承填料，保持填料密封的零件。

　　Components that support packing and maintain packing sealing.

　　14.支架（yoke）

　　14. Bracket (yoke)

　　在閥蓋或閥體上，用于支承閥桿螺母和傳動(dòng)機(jī)構(gòu)的零件。

　　A component used to support the valve stem nut and transmission mechanism on the valve cover or body.

　　15.撞擊手輪（impact handwheel, hammer blow handwheelimpact handwheel, hammer blow handwheel）

　　15. Impact Handwheel, Hammer Blow Handwheel Impact Handwheel, Hammer Blow Handwheel

　　利用撞擊作用力以減輕閥門操作力的手輪結(jié)構(gòu)。

　　A handwheel structure that utilizes impact force to reduce valve operating force.

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