阀门行业术语强度性能阀门的强度性能是指阀门承受介质压力的能力。
阀门是承受内压的机械产品，因而必须具有足够的强度和刚度，以保证长期使用而不发生破裂或产生变形。
密封性能阀门的密封性能是指阀门各密封部位阻止介质泄漏的能力，它是阀门最重要的技术性能指标。
阀门的密封部位有三处：启闭件与阀座两密封面间的接触处；填料与阀杆和填料函的配和处；阀体与阀盖的连接处。
其中前一处的泄漏叫做内漏，也就是通常所说的关不严，它将影响阀门截断介质的能力。
对于截断阀类来说，内漏是不允许的。
后两处的泄漏叫做外漏，即介质从阀内泄漏到阀外。
外漏会造成物料损失，污染环境，严重时还会造成事故。
对于易燃易爆、有毒或有放射的介质，外漏更是不能允许的，因而阀门必须具有可靠的密封性能。
流动介质介质流过阀门后会产生压力损失（既阀门前后的压力差），也就是阀门对介质的流动有一定的阻力，介质为克服阀门的阻力就要消耗一定的能量。
从节约能源上考虑，设计和制造阀门时，要尽可能降低阀门对流动介质的阻力。
启闭力和启闭力矩启闭力和启闭力矩是指阀门开启或关闭所必须施加的作用力或力矩。
关闭阀门时，需要使启闭件与发座两密封面间形成一定的密封比压，同时还要克服阀杆与填料之间、阀杆与螺母的螺纹之间、阀杆端部支承处及其他磨擦部位的摩擦力，因而必须施加一定的关闭力和关闭力矩，阀门在启闭过程中，所需要的启闭力和启闭力矩是变化的，其最大值是在关闭的最终瞬时或开启的最初瞬时。
设计和制造阀门时应力求降低其关闭力和关闭力矩。
启闭速度启闭速度是用阀门完成一次开启或关闭动作所需的时间来表示。
一般对阀门的启闭速度无严格要求，但有些工况对启闭速度有特殊要求，如有的要求迅速开启或关闭，以防发生事故，有的要求缓慢关闭，以防产生水击等，这在选用阀门类型时应加以考虑。
动作灵敏度和可靠性这是指阀门对于介质参数变化，做出相应反应的敏感程度。
对于节流阀、减压阀、调节阀等用来调节介质参数的阀门以及安全阀、疏水阀等具有特定功能的阀门来说，其功能灵敏度与可靠性是十分重要的技术性能指标。
使用寿命它表示阀门的耐用程度，是阀门的重要性能指标，并具有很大的经济意义。
通常以能保证密封要求的启闭次数来表示，也可以用使用时间来表示。
类型type按用途或主要结构特点对阀门的分类型号model按类型、传动方式、连接形式、结构特点、阀座密封面材料和公称压力等对阀门的编号连接尺寸connection dimensions阀门和管道连接部位的尺寸主要外形尺寸general dimensions阀门的开启和关闭高度、手轮直径以及连接尺寸等连接形式type of connection阀门与管道或机器设备的连接所采用的各种方式(如法兰连接\螺纹连接\焊接连接等密封试验seal test检验启闭件和阀体密封副性能的试验上密封试验back seal test检验阀杆与阀盖密封副密封性能的试验密封试验压力seal test pressure阀门进行密封试验时规定的压力适用介质suitable medium阀门能适用的介质适用温度suitable temperature阀门适用的介质的温度范围密封面sealing face启闭件与阀座（阀体）紧密贴合，起密封作用的两个接触面启闭件disc用于截断或调节介质流通的一种零件的统称，如闸阀中的闸板、节流阀中的阀瓣等填料packing装入填料函（或填料箱）中，阻止介质从阀杆处泄漏的填充物填料垫packing seat支承填料，保持填料密封的零件填料压盖gland用以压紧填料达到密封的零件支架yoke在阀盖或阀体上，用于支承阀杆螺母和传动机构的零件连接槽尺寸dimension of connecting channel启闭件与阀杆装配连接部位的结构尺寸流道面积flow area指阀门进口端到阀座密封面间的最小截面积（但不是指“帘”面积），用来计算无任何阻力影响时的理论排量流道直径flow diameter对应于流道面积的直径流量特性flow characteristics稳定流动状态下，当进口压力等参数不变时，减压阀的出口压力与流量的函数关系流量特性偏差flow characteristics derivation稳定流动状态下，当进口压力等参数不变时，减压阀流量的变化所引起的出口压力变化值通用阀门general valve各工业企业中管道上普遍采用的阀门自动阀门 Self-acting valve依靠介质（液体、空气、蒸汽等）本身的能力而自行动作的阀门驱动阀门 Actuated valve借助手动、电力、液压或气压来操纵的阀门撞击手轮hammer blow handwheel利用撞击作用力以减轻阀门操作力的手轮结构蜗轮传动装置wormgear actuator用蜗轮机构启闭或调节阀门的装置气动装置pneumatic actuator用气压力启闭或调节阀门的驱动装置液动装置hydraulic actuator用液压力启闭或调节阀门的驱动装置热凝结水排量Hot condensate capacity在给定压差和温度下疏水阀一／j咐内能排出凝结水的；犀大重量漏汽量Steam loss单位时间内疏水阀漏出新鲜蒸气的量CQ螺纹球阀CQ Thread Ball ValvesL形三通式L-pattern three wayT形三通式T-pattern three way安全阀Safety valve暗杆闸阀Inside screw nonrising stem type gate valve百叶窗; 闸板shutter百叶窗式挡板louver damper摆阀式活塞泵swing gate piston pump保温式Steam jacket type报警阀alarm valve报警阀; 信号阀; 脉冲阀sentinel valve背压调节阀back pressure regulating valve背压率Rate of back pressure本体阀杆密封body stem seal波纹管阀Bellows valves波纹管密封阀bellow sealed valve波纹管密封式Bellows seal type波纹管平衡式安全阀Bellows seal balance safety valve 波纹管式减压阀Bellows reducing valve波纹管式减压阀Bellows weal reducing valve薄膜thin film薄膜; 隔膜diaphragm薄膜式减压阀Diaphragm reducing valve薄型闸阀Thin Gate Valves不封闭式Unseal type槽车球阀Tank Lorry Ball Valves颤振Flutter常闭式Normally closed type常开式Normally open type超低温阀门Cryogenic valve超高压阀门Super high pressure valve超过压力Overpressure of a safety valve衬胶隔膜阀rubber lined diaphragm衬胶截止阀rubber lined globe valve垂直板式蝶阀Vertical disc type butterfly valve磁耦合截止阀Magnetic Co-operate Globe Valves带补充载荷的安全阀Supplementary loaded safety valve 带辅助装置的安全阀Assisted safety valve单阀碟双面平行密封闸阀parallel single disk gate valve 单口排气阀Single Opening Exhaust Valves单向阀Non-return Valve单闸板Single gate disc单闸板平板闸阀Single Disc Flat Gate Valves弹簧薄膜式减压阀Spring diaphragm reducing valve弹簧式安全阀Direct spring loaded safety valve弹簧座Spring plate弹性闸板Flexible gate disc当量计算排量Equivalent calculated capacity挡板damper导阀Pilot valve导向套Valve guide disc guide低温阀门Sub-zero valve低压阀门Low pressure valve底阀bottom valve底阀Foot valve电磁动装置Eletro magnetic actuator电磁阀magnetic valve电磁阀solenoid valve电磁－液动装置Eletro magnetichydraulic actuator电动球阀阀mortor operated valve电动球阀阀motorized valve电动球阀截止阀Electric Actuated Stop Valves平行式双闸板闸板Electric Double Disk Parallel Gate Valves楔式闸阀Electric Actuated Wedge Gate Valves装置Electric actuator电－液动装置Eletro hydraulic actuator电液伺服阀electro-hydraulic servovalve调节弹簧Regulation spring调节阀adjusting valve调节阀control valve调节阀regulating valve调节螺套Adjusting bolt Adjusting screw调节圈Adjusting ring蝶板Disc蝶阀；瓣阀butterfly valve蝶阀；瓣阀；拍门；铰链阀flap valve蝶式缓冲止回阀Butterfly Type Non-slam Check蝶式止回阀Butterfly swing check valve定比减压阀Proprutioning pressure reducing valve定差减压阀Fixed differential reducing valve定值减压阀Fixed pressure reducing valve动态特性Dynamic characteristics对焊连接阀Buttwelding valves对夹蝶板阀Wafer plate valves对夹式衬胶蝶阀Wafer Type Butterfly Valves with Rubber Itning 对夹式阀门Clamp valves对夹式止回阀Wafer Check Valves额定排量Certified capacity额定排量系数Derated coefficient of discharge 二通阀Two-way valves阀valve阀板valve deck plate阀板valve plate阀板式活塞泵valve deck plate type piston pump 阀板式活塞泵valve plate type piston pump阀瓣Disc阀操纵杆valve operating rod阀痤槽valve seat recess阀挡valve grid阀挡valve positioner阀挡valve stop阀导杆valve tail rod阀导向器valve guide阀盖bonnet阀盖衬套bonnet bush阀盖垫片bonnet gasket阀杆stem阀杆valve rod阀杆valve spindle阀杆端部尺寸Dimmension of valve stem end阀杆环stem ring阀杆螺母Yoke bushing Yoke nut阀杆填料stem packing阀杆头部尺寸Dimension of valve stem head阀簧valve spring阀簧压板valve spring plate阀控水锤泵valve-controlled hydraulic ram阀框架valve yoke阀门Valve阀门传动装置valve bandle set阀门和管件Valves and Fittings阀门盘根valve packing阀门手柄valve handle阀盘disc阀盘valve disc阀片Disc阀球valve ball阀驱动臂valve driving arm阀驱动臂valve motion arm阀式活塞valve type piston阀式活塞valve type bucket阀室式活塞泵valve box type piston pump阀室式活塞泵（美）valve pot type piston pump阀抬起装置valve lifting device阀体body阀体valve body阀箱valve box阀箱valve cage阀箱valve chest阀箱；阀限位器valve guard阀箱盖cover for valve box阀箱盖valve box cover阀箱式活塞泵（美）turret type piston pump阀形活塞泵valve type piston pump阀座Seat ring阀座valve carrier阀座valve seat(body seat)阀座；阀盘valve seat阀座环seat ring阀座密封嵌条sealing strip for valve seat法兰flange法兰堵头blind flange法兰端flange end法兰接头flange joint法兰连接紧固件（双头螺栓和螺帽）flange bolting法兰密封面，法兰面flange facing法兰面加工flange facing finish法兰球阀Flange Ball Valves翻板阀Flap反冲盘Disc holder反向作用式减压阀Reverse acting reducing valve反向作用式减压阀Reverse acting reducing valve放空阀emptying valve放气阀air vent valve;vent valve放气阀；排气阀air evacuation valve放泄阀escape valve分置阀室式活塞泵separate valve box type piston pump 分置阀室式活塞泵（美）side pot type piston pump封闭式Seal type浮动式球阀Float ball valve浮球Ball float浮球阀Float Valve浮球式疏水阀Ball float steam trap浮球式疏水阀Free Float Type Steam Trap浮桶Bucket float浮桶式疏水阀Open bucket steam trap辅助（副）阀Auxiliary valves负荷率Rate of load condensate附加背压力Superimposed back pressure复位弹簧Returnning spring杠杆式Lever type杠杆式安全阀Lever and weight loaded safety valve杠杆式减压阀Lever reducing valve高温阀门High temperature valve高压阀门High pressure valve格兰密封gland隔离阀isolating valve隔膜Diaphragm隔膜阀diaphragm valve隔膜式控制阀diaphragm operated comtrol valve工作背压Operating back pressure工作温度Operating temperature工作温度Working temperature工作压差Operting differential pressure工作压力Operating pressure工作压力Working pressure公称通径Nominal diameter公称压力Nominal pressure固定式球阀Fixed ball valve关闭压力Lockup pressure关阀过冷度Subcooled temperature of close valve关阀温度Closing valve temperature管道安全阀Piping Safety Valves过冷度Subcoold temperature过流阀(或节流阀) Restrictor Valves喉径Throat diameter滑阀slide valve滑阀式回转活塞泵rotary piston pump with slide gate 滑阀型转子泵eccentric rotary pump with sliding sleeve 环形阀annular valve环形阀double beat valve换向阀selector valve换向阀shuttle valve回转滑阀活塞泵piston pump with rotary gate回座压力Re-seating pressure of a safety valve活塞昵减压阀Piston reducing valve活塞式阀piston valve活塞式阀；柱塞式阀plunger valve活塞式减压阀Piston reducing valve减速阀Deceleration valves减压比Pressure reducing ratio减压阀pressure reducing valve浆液阀Parallel Slide Valves角阀Angle Valve角阀isolation valve angle configuration角式Angie type角式节流阀Angle Throttle Valves角式截止阀Angle Stop valves铰链阀；片状阀flapper valve节流阀throttle valve节流阀choke valve节流阀；节流throttle结构长度Face-to-face dimension ;End-to-end dimension; Face-to-centre dimension 结构形式Type of construction截止阀Globe valve截止阀Shut-off Valve截止阀；关断阀shut-off valve截止式隔膜阀Globe diaphragm valve紧急切断阀Emergeny Cut-off Valves进气阀air intake valve进水阀；进口阀门inlet valve静态特性Static characteristics静态特性偏差Static characteristics derivation开阀过冷度Subcooled temperature of open valve开阀温度Opening valve temperature开启高度Lift壳体试验Shell test壳体试验压力Seal test pressure空气阀门Air valves快速排污阀Quick Draining Valves类型Type冷凝结水排量Cold condensate capacity冷态试验差压力Cold differential test pressure理论排量Theoretical flowing capacity连接槽尺寸Dimension of connecting channel连接尺寸Conncetion cimension连接形式Type of connection帘面积Curtain area流道面积Flow area流道直径Flow diameter流量孔板flow orifice plate流量控制阀flow control valve流量特性Flow characteristics流量特性偏差Flow characteristics derivation漏汽量Steam loss脉冲式疏水阀Impulse steam trap密封面Sealing face密封试验Seal test密封试验压力Seal test pressure明杆平行式双闸板闸板Double Disk Parallel Gate Valves明杆闸阀Outside screw stem rising through handwheel type gate valve 膜片Diaphragm内压自封Pressure seat逆止阀；止回阀check valve逆止阀；止回阀non-return valve逆止阀;止回阀;单向阀check valve排放背压力Brilt-up back pressure排放压力Relieving pressure排灰阀Ash valves排量系数Coefficient of discharge排气阀air release valve排气阀Exhaust valves排气阀Vent Valve排水阀Drainage valves排水温度Temperature at discharging condensate排污阀blowdown valve排污箱(阀) Waste Valves排渣闸阀Scum Gate Valves盘阀moushroom valve盘状阀plate valve旁路阀by pass valve配汽活塞阀缸套piston valve line喷射阀injection valve喷射阀sprayer valve喷水阀spray water valve频跳Chatter平衡阀Balance valves平衡式Balance type平行式闸阀Parallel gate valve Parallel slide valve启闭件Disc启闭压差Blowdown of a safety valve起始升程Commencement of lift气动装置Pneumatic actuator气阀摇臂valve arm气－液动装置Pneumatic-hydraulic actuator潜水电泵(排污泵) Submerged Motor Pumps切断阀;截止阀block valve;shut-off valve;stop valve切断式止回阀stop check valve切换阀;多向阀changeover valve球、球芯Ball球阀Ball valve球阀globe valve球体Ball全启式安全阀Fall lift safety valve热凝结水排量Hot condensate capacity入口隔离门suction isolating valve塞子Plug三通阀three-way isolating valve三通阀three-way valve三通式Three way type上密封Back seat上密封试验Back seal test渗漏量Leckage升降立式止回阀Vertical lift check valve升降式止回阀Lift check valve适用介质Suitable medium适用温度Suitable temperature手摇油泵(阀) Manual Oil Pumps Valves疏水阀drain valve双金属片式疏水阀Bimetal elements steam trap 双口排气球Double Opening Exhaust Valves双联弹簧式安全阀Duplex safety valve双闸板Double gate disc双闸板平板闸阀Double Disc Flat Gate Valves水封闸阀Water Seal Gate Valves水力喷射器(真空泵) Vacuum Pumps伺服阀servovalve填料Packing填料垫Packing seat填料函Stuffing填料式旋塞阀Gland packing plug valve填料箱Stuffing box填料压盖Gland通气阀breather valve通气阀；呼吸器breather通用阀门General valve吐出阀；排出阀discharge valve吐出阀限位器delivery valve guard微启式安全阀Low lift safety valve微阻缓闭止回阀Tiny Drag Slow Shut Check Valves 吻合度Percent of contact area蜗轮传动蝶阀Butterfly Valves with Gear Actuator蜗轮传动装置Wormgear actuator屋脊式隔膜阀Weir diaphragm valve无阀泵valveless pump无阀隔膜泵valveless diaphragm pump无阀振动泵valveless vibration pump无负荷漏汽量No-load steam loss无负荷漏汽率Rate of no-load steam loss吸（抽）气阀Aspirating valves吸入阀suction valve吸入阀限位器suction valve guard先导式安全阀Pilot operated safety valve先导式液压阀Pilot-operated reducing valve相对静偏差Relative static characteristics derivation相对流量特性偏差Relative flow characteristics derivation相对压力特性偏差Relative pressure characteristics derivation 销轴Hinge pin楔式闸阀Wedge gate valve斜板式蝶阀Indined disc butterfly valve泄料（放空，排污）阀Blowdown valves泄压阀Decompression valves泄压阀pressure release valve泄压阀；安全阀relief valve卸荷式减压阀Balanced reducing valve型号Type Model旋启多瓣式止回阀Multi-disc swing foot valve旋启式止回阀Swing check valve旋启双瓣式底阀Double disc swing foot valve旋塞阀Cock旋塞阀plug valve压力（増压）阀Pressure valve压力调节阀；压力控制阀pressure controlled valve压力特性Pressure characteristics压力特性偏差Pressure characteristics derivation压力增长系数Pressure increasing ratio摇杆Arm液动装置Hydraulic actuator液化气管件LPG Pipe Fitting液下泵Under Water Pumps液压执行器hydraulic actuator仪表针形截止阀Meter Needle Type Globe Valves溢流阀overflow valve翼形阀；锥形阀wing valve油封式旋塞阀Lubricated plug valve有阀翼板double acting wing有阀翼板wing with valve有负荷漏汽量Load steam loss有负荷漏汽率Rate of load steam loss圆板阀；圆盘阀disc valve圆盘式疏水阀Shemostatic team trap圆柱齿轮传动装置Cylindrical gear actuator圆锥齿轮传动装置Conical gear actuator闸板Wedge disc闸板式隔膜阀Wedge diaphragm valve闸阀gate valve闸阀sluice valve针形阀Pintle valve ; Needle valve真空破坏阀vacuum breaker valve蒸汽疏水阀Automatic steam trap Trap整定压力Set pressure正向作用式减压阀Direct acting reducing valve 支架Yoke直接载荷式安全阀Direct loaded safety valve 直接作用式减压阀Direct-acting reducing valve 直流式Y-globe type直流式截止阀Oblique Stop Valve直通单向阀inline check valve直通单向阀straightway check valve直通阀Throughway Valve止回阀Check Valve止回阀；回流阀reflux valve制动阀Brake valves中压阀门Middle pressure valve钟形浮子式疏水阀Inverted bucket steam trap 钟形罩Inverted bucket轴套Axis Guide主阀Main valve主要外形尺寸Prime out-form dimensions主要性能参数Specifeca tion speeification注液漏斗阀Priming Tundish Valve柱塞阀Plunger valve柱塞截止阀Plunger Globe Valve柱塞型摆动阀rocking plunger valve撞击手轮Impact handwheel锥形阀；翼形阀conical valve自动循环阀Automatic Recirculation Valve组合阀Combination valves最大过冷度Maximum subcoold temperature最大流量Maximum flow rate最大压差Maximum differential pressure最低工作压力Minimum operating pressure最高背压率Maximum rate of back pressure最高工作背压Maximum operating back pressure最高工作温度Maximum operating temperature最高工作压力Maximum operating pressure最高排水温度Maximum temperature at discharging 最高允许温度Maximum allwable temperature最高允许压力Maximum allowable pressure最小过冷度Minimum subcooled temperature最小压差Minimum differntial pressure。