管接头 coupling, full coupling 半管接头 half coupling
异径管接头 reducing coupling 活接头 union
内外螺纹缩接（俗称补芯） bushing 管帽 cap (C) 堵头 plug 短节 nipple
异径短节 reducing nipple; swage nipple
1.3 弯管 Bend
预制弯管 fabricated pipe bend
跨越弯管（^ 形） cross-over bend 偏置弯管（~ 形） offset bend 90°弯管 quarter bend 环形弯管 cirele bend 单侧偏置90°弯管（? 形） single offset quarter bend S形弯管 “S” bend
单侧偏置U形膨胀弯管（| ?形） single offset “U” bend U形弯管 “U” bend
双偏置U膨胀弯管 double offset expansion “U” bend 斜接弯管 mitre bend
三节斜接弯管 3-piece mitre bend 折皱弯管 corrugated bend 圆度 roundness
1.4 法兰 Flange (FLG）
整体管法兰 integral pipe flange 钢管法兰 steel pipe flange 螺纹法兰 threaded flange
滑套法兰（包括平焊法兰） slip-on flange (SO); slip-on welding flange 承插焊法兰 socket welding flange 松套法兰 lap joint flange (LJF)
对焊法兰 welding neckflange (WNF) 法兰盖 blind flange, blind 孔板法兰 orifice flange 异径法兰 reducing flange 盘座式法兰 pad type flange
松套带颈法兰 loose hubbed flange 焊接板式法兰 welding plate flange
对焊环 welding neck collar （与stub end相似） 平焊环 welding-on collar
突缘短节 stub end, lap 翻边端 lapped pipe end
松套板式法兰 loose plate flange
压力级 pressure rating, pressure rating class 压力—温度等级 pressure-temperature rating 法兰密封面，法兰面 flange facing 突面 raised face (RF) 凸面 male face (MF) 凹面 female face (FMF) 榫面 tongue face 槽面 groove face
环连接面 ring joint face
全平面；满平面 flat face; full face (FF) 光滑突面 smooth raised face (SRF) 法兰面加工 facing finish 粗糙度 roughness 光滑的 smooth 齿形 serrated
均方根 root mean square (RMS)
算术平均粗糙高度 arithmetical average roughness height (AARH) 配对法兰 companion-flange 螺栓圆 bolt circle (B.C.)
1.5 垫片 Gasket (GSKT)
垫片的型式 type of gasket 平垫片 flat gasket
环形平垫片 flat ring gasket 平金属垫片 flat metal gasket
夹棉织物的橡胶 elastomer with cotton fabric insertion
夹石棉织物的橡胶 elastomer with asbestos fabric insertion
夹石棉织物及金属丝加强的橡胶 elastomer with asbestos fabric insertion and with wire reinforcement
无石墨压缩白石棉垫片 non graphited compressed white asbestos gasket 天然白橡胶垫片 natural white rubber gasket
压缩石棉垫片 compressed asbestos class gasket
浸聚四氟乙烯的石棉垫片 PTFE impregnated asbestos gasket
夹石棉的缠绕金属垫片 spiral-wound metal gasket with asbestos filler 内环 inner ring
外环，外定位环 outer ring
波纹金属垫片 corrugated metal gasket
波纹金属包嵌石棉垫片 corrugated metal gasket with asbestos inserted 双夹套波纹金属包石棉垫片 corrugated metal double jacketed asbestos filled gasket
双夹套垫片 double jacketed gasket
金属包石棉平垫片 flat metal jacketed asbestos filled gasket 整体金属齿形垫片 solid metal serrated gasket 槽形金属垫片 grooved metal gasket
环形连接金属垫片 ring joint metal gasket 八角环形垫片 octagonal ring gasket 椭圆环形垫片 oval ring gasket 透镜式垫片 lens gasket
非金属垫片 non-metallic gasket
1.6 阀门 Valve
1.6.1 阀门结构、零件
阀轭 yoke
外螺纹阀杆及阀轭 outside screw and yoke (OS & Y) 阀杆 stem
内螺纹 inside screw (IS) 阀轭套 yoke sleeve 阀杆环 stem ring
阀座 valve seat (body seat) 阀座环、密封圈 seat ring 整体（阀）座 integral seat 堆焊（阀）座 deposited seat
阀芯（包括密封圈、杆等内件） trim 阀盘 disc
阀盘密封圈 disc seat 阀体 body 阀盖 bonnet
阀盖衬套 bonnet bush 螺纹阀帽 screw cap 螺纹阀盖 screw bonnet
螺栓连接的阀盖 bolted bonnet (BB) 活接阀盖（帽） union bonnet (cap) 螺栓连接的阀帽 bolted cap (BC) 焊接阀盖 welded bonnet (WB) 本体阀杆密封 body stem seal
石棉安全密封 asbestos emenen seal 倒密封 back seal
压力密封的阀盖 pressure-tight bonnet 动力操纵器 powered operator
电动操纵器 electric motor operator 气动操纵器 pneumatic operator 液压操纵器 hydraulic operator
快速操纵器 quick-acting operator 滑动阀杆 sliding stem
正齿轮传动 spur gear operated 伞齿轮传动 bevel gear operated 扳手操作 wrench operated 链轮 chain wheel 手轮 hand wheel
手柄 hand lever (handle)
气缸（或液压缸）操纵的 cylinder operated 链条操纵的 chain operated 等径孔道 full bore; full port
异径孔道 reducing bore, reduced port,venturi port 短型 short pattern
紧凑型（小型） compact type 笼式环 lantern ring 压盖 gland
阀杆填料 stem packing 阀盖垫片 bonnet gasket
升杆式（明杆） rising stem (RS)
非升杆式（暗杆） non-rising stem (NRS) 指示器/限位器 indicator/stopper 注油器 grease injector
可更换的阀座环 renewable seat ring
1.6.2 常用阀
(1）闸阀 gate valve
平行双闸板 double disc parallel seat 开口楔形闸板 split wedge
挠性整体楔形闸扳 flexible solid wedge 整体楔形闸板 solid wedge 塞型闸阀 plug gate valve
直通型闸阀 through conduit gate valve (2) 截止阀 globe valve 球心型阀盘 globe type disc 塞型阀盘 plug type disc 可转动的阀盘 swivel disc (3) 节流闪阀 throttle valve 针阀 needle valve (4) 角阀 angle valve
(5) Y型阀（Y 型阀体截止阀） Y-valve (Y-body globe valve) (6) 球阀 ball valve
三通球阀 3-way ball valve 装有底轴的 trunnion mounted
耐火型 fire safe type
浮动球型 floating ball type
防脱出阀杆 blowout proof stem (7) 蝶阀 butterfly valve
对夹式（薄片型） wafer type 凸耳式 lug type
偏心阀板蝶阀 offset disc burerfly valve; eccentric butterfly valve 斜阀盘蝶阀 canted disc butterfly valve 连杆式蝶阀 link butterfly valve 8) 柱塞阀 piston type valve (9) 旋塞阀 plug valve
三通旋塞阀 three-way plug valve 四通旋塞阀 four-way plug valve 旋塞 cock
衬套旋塞 sleeve cock
(10) 隔膜阀 diaphragm valve
橡胶衬里隔膜阀 rubber lined diaphragm valve 直通式隔膜阀 straight way diaphragm valve 堰式隔膜阀 weir diaphragm valve
(11) 夹紧式胶管阀 pinch valve（用于泥浆、粉尘等） (12) 止回阀 check valve
升降式止回阀 lift check valve
旋启式止回阀 swing check valve, flap check valve 落球式止回阀 ball check valve
弹簧球式止回阀 spring ball check valve
双板对夹式止回阀 dual plate wafer type check valve 无撞击声止回阀 non-slam cheek valve 底阀 foot valve
切断式止回阀 stop check valve; non-return valve 活塞式止回阀 piston check valve 斜翻盘止回阀 tilting disc check valve 蝶式止回阀 butterfly check valve
1.6.3 其它用途的阀
安全泄气阀 safety valve (SV) 安全泄液阀 relief valve (RV) 安全泄压阀 safety relief valve 杠杆重锤式 lever and weight type
引导阀操纵的安全泄气阀 pilot operated safety valve 复式安全泄气阀 twin type safety valve 罐底排污阀 flush-bottom tank valve
电磁阀 solenoid valve, solenoid operated valve
电动阀 electrically operated valve, electric-motor operated valve