阀门型号各单元含义与代号

　　Valve model, meaning and code of each unit

　　一 型号组成与顺序

　　Model composition and sequence

　　通用工业阀门的型号通常由7个单元依次组成，分别表示：类型代号、驱动方式代号、连接形式代号、结构形式代号、密封面或衬里材料代号、压力代号、阀体材料代号。各单元的含义与取值见下表与后续说明。

　　The model of general industrial valves is usually composed of 7 units in sequence, representing: type code, drive mode code, connection form code, structural form code, sealing surface or lining material code, pressure code, and valve body material code. The meanings and values of each unit are shown in the following table and subsequent explanations.

　　二 各单元代号对照

　　Comparison of Unit Codes

　　单元含义常见代号/规则

　　Common codes/rules for unit meanings

　　1 类型代号表示阀门类别见下表“类型代号表”

　　The type code represents the valve category, as shown in the "Type Code Table" in the table below

　　2 驱动方式代号表示启闭动力方式见下表“驱动方式代号表”；安全阀、减压阀、疏水阀及手轮直连的阀门此项常省略

　　The driving mode code indicates the opening and closing power mode, as shown in the table "Driving Mode Code Table" below; This item is often omitted for safety valves, pressure reducing valves, drain valves, and valves directly connected to handwheels

　　3 连接形式代号与管道或设备的接口形式见下表“连接形式代号表”

　　3. The connection form code and the interface form of the pipeline or equipment are shown in the table "Connection Form Code Table" below

　　4 结构形式代号同类阀门的内部结构差异用阿拉伯数字表示，取值随阀门类型不同而不同（见各类结构形式表）

　　The internal structural differences of valves of the same type are represented by Arabic numerals, and the values vary depending on the type of valve (see various structural form tables)

　　5 密封面或衬里材料代号阀座密封副或衬里材料见下表“密封面/衬里材料代号表”

　　5. The material code for the sealing surface or lining of the valve seat is shown in the table "Sealing Surface/Lining Material Code Table"

　　6 压力代号表示公称压力等级以MPa×10的数值表示；采用lb或K级时，在数值后加“lb”或“K”

　　6. The pressure code represents the nominal pressure rating in MPa × 10 values; When using lb or K grade, add "lb" or "K" after the value

　　7 阀体材料代号表示阀体材质见下表“阀体材料代号表”；特定PN条件下可省略

　　7. The valve body material code indicates that the valve body material is listed in the "Valve Body Material Code Table" below; Under specific PN conditions, it can be omitted

　　三 常用代号速查

　　Quick search for three commonly used codes

　　类型代号表

　　Type code table

　　闸阀：Z；截止阀：J；节流阀：L；球阀：Q；蝶阀：D；隔膜阀：G；旋塞阀：X；止回阀/底阀：H；安全阀：A；减压阀：Y；疏水阀：S；排污阀：P；柱塞阀：U。

　　Gate valve: Z; globe valve: J; throttle valve: L; ball valve: Q; butterfly valve: D; diaphragm valve: G; plug valve: X; check valve/foot valve: H; safety valve: A; pressure reducing valve: Y; drain valve: S; drain valve: P; plunger valve: U.

　　驱动方式代号表

　　Driver mode code table

　　电磁动：0；电磁-液动：1；电-液动：2；蜗轮：3；正齿轮：4；锥齿轮：5；气动：6；液动：7；气-液动：8；电动：9。

　　Electromagnetic motion: 0; Electromagnetic hydraulic: 1; Electro hydraulic: 2; Worm gear: 3; Positive gear: 4; Cone gear: 5; Pneumatic: 6; Hydraulic: 7; Pneumatic hydraulic: 8; Electric: 9.

　　省略规则：安全阀、减压阀、疏水阀及手轮直连结构（如手动闸阀、球阀、蝶阀等）此项常省略。

　　Omission rule: Safety valves, pressure reducing valves, drain valves, and handwheel direct connection structures (such as manual gate valves, ball valves, butterfly valves, etc.) are often omitted.

　　扩展：气动常开/常闭：6K/6B；液动常开/常闭：7K/7B；防爆电动：9B。

　　Expansion: Pneumatic normally open/normally closed: 6K/6B; Hydraulic normally open/normally closed: 7K/7B; Explosion proof electric: 9B.

　　连接形式代号表

　　Connection form code table

　　内螺纹：1；外螺纹：2；两不同连接：3；法兰：4；焊接：6；对夹：7；卡箍：8；卡套：9。

　　Internal thread: 1; External thread: 2; Two different connections: 3; Flange: 4; Welding: 6; Clamp: 7; Clamp: 8; Card sleeve: 9.

　　密封面或衬里材料代号表

　　List of material codes for sealing surfaces or lining

　　锡基轴承合金（巴氏合金）：B；搪瓷：C；渗氮钢：D；氟塑料：F；陶瓷：G；Cr13系不锈钢：H；衬胶：J；衬铅：Q；蒙乃尔：M；尼龙：N；渗硼钢：P；奥氏体不锈钢：R；塑料：S；橡胶：X；铜合金：T；硬质合金：Y。

　　Tin based bearing alloy (Babbitt alloy): B; Enamel: C; Nitrided steel: D; Fluoroplastic: F; Ceramic: G; Cr13 series stainless steel: H; Rubber lining: J; Lead lining: Q; Monel: M; Nylon: N; Boron infiltrated steel: P; Austenitic stainless steel: R; Plastic: S; Rubber: X; Copper alloy: T; Hard alloy: Y.

　　规则：除隔膜阀外，密封副材料不同时以硬度较低者表示；密封面材料与阀体相同时用W表示；隔膜阀以阀体表面材料表示。

　　Rule: Except for diaphragm valves, when the sealing secondary material is different, the one with lower hardness is indicated; When the sealing surface material is the same as the valve body, it is represented by W; Diaphragm valves are represented by the surface material of the valve body.

　　阀体材料代号表

　　Valve Body Material Code Table

　　灰铸铁：Z；球墨铸铁：Q；碳钢：C；Cr13系不锈钢：H；铬镍系不锈钢：P；铬镍钼系不锈钢：R；铬钼系钢：I；铬钼钒钢：V；可锻铸铁：K；铝合金：L；铜及铜合金：T；塑料：S；钛及钛合金：Ti。

　　Gray cast iron: Z; ductile iron: Q; carbon steel: C; Cr13 stainless steel: H; chromium nickel stainless steel: P; chromium nickel molybdenum stainless steel: R; chromium molybdenum steel: I; chromium molybdenum vanadium steel: V; malleable cast iron: K; aluminum alloy: L; copper and copper alloys: T; plastic: S; titanium and titanium alloys: Ti.

　　省略规则：当PN≤1.6 MPa且阀体为灰铸铁，或PN≥2.5 MPa且阀体为碳素钢时，阀体材料代号可省略；不锈钢牌号如CF3/CF8/CF3M/CF8M可直接标在阀体上。

　　Omission rule: When PN ≤ 1.6 MPa and the valve body is made of gray cast iron, or PN ≥ 2.5 MPa and the valve body is made of carbon steel, the valve body material code can be omitted; Stainless steel grades such as CF3/CF8/CF3M/CF8M can be directly marked on the valve body.

　　四 结构形式代号说明

　　Explanation of Four Structural Form Codes

　　结构形式代号用阿拉伯数字表示，且不同阀门类别的数字含义不同。常见类别与示例：

　　The structural form code is represented by Arabic numerals, and the numerical meanings of different valve categories are different. Common categories and examples:

　　闸阀：明杆楔式单闸板1、明杆楔式双闸板2、明杆平行式单闸板3、明杆平行式双闸板4、暗杆楔式单闸板5、暗杆楔式双闸板6等。

　　Gate valves: rising stem wedge single gate 1, rising stem wedge double gate 2, rising stem parallel single gate 3, rising stem parallel double gate 4, concealed stem wedge single gate 5, concealed stem wedge double gate 6, etc.

　　截止阀/节流阀：直通式1、角式4、直流式5、平衡直通式6、平衡角式7。

　　Globe valve/throttle valve: straight through type 1, angle type 4, straight through type 5, balanced straight through type 6, balanced angle type 7.

　　球阀：浮动球直通式1、L形三通4、T形三通5、固定球直通式7。

　　Ball valves: Floating ball straight through type 1, L-shaped tee 4, T-shaped tee 5, fixed ball straight through type 7.

　　止回阀：升降式直通1、立式2、角式3、旋启式单瓣4、旋启式多瓣5、蝶形止回7。

　　Check valve: lifting straight through 1, vertical 2, angle 3, swing single valve 4, swing multi valve 5, butterfly check 7.

　　安全阀：弹簧载荷微启式1、弹簧载荷全启式2、带扳手全启式4、带散热片全启式0、不封闭微启式7、不封闭全启式8、杠杆式单杠杆2、杠杆式双杠杆4、脉冲式9。

　　Safety valve: Spring loaded micro opening type 1, Spring loaded full opening type 2, Full opening type with wrench 4, Full opening type with heat sink 0, Non enclosed micro opening type 7, Non enclosed full opening type 8, Leverage type single bar 2, Leverage type double bar 4, Pulse type 9.

　　减压阀：薄膜式1、弹簧薄膜式2、活塞式3、波纹管式4、杠杆式5。

　　Pressure reducing valve: diaphragm type 1, spring diaphragm type 2, piston type 3, bellows type 4, lever type 5.

　　疏水阀：浮球式1、浮桶式3、液体或固体膨胀式4、钟形浮子式5、蒸汽压力/膜盒式6、双金属片式7、脉冲式8、圆盘热动力式9。

　　Drain valve: floating ball type 1, floating bucket type 3, liquid or solid expansion type 4, bell shaped float type 5, steam pressure/membrane type 6, bimetallic plate type 7, pulse type 8, disc thermal power type 9.

　　排污阀：液面连接排放-截止型直通1、截止型角式2、截止型直流5、截止型角式7、浮动闸板型直通8等。

　　Discharge valve: liquid level connection discharge cut-off type straight through 1, cut-off type angle type 2, cut-off type DC 5, cut-off type angle type 7, floating gate type straight through 8, etc.

　　五 压力代号与省略规则

　　Five pressure codes and omission rules

　　压力代号：以MPa×10表示，例如16代表PN1.6 MPa；若采用磅级（lb）或K级，在数值后加“lb”或“K”。当介质温度超过425℃时，应标注工作温度下的工作压力代号。

　　Pressure code: expressed in MPa × 10, for example, 16 represents PN1.6 MPa; If using pound (lb) or K-grade, add "lb" or "K" after the value. When the temperature of the medium exceeds 425 ℃, the working pressure code at the working temperature should be marked.

　　省略规则：当PN≤1.6 MPa且阀体为灰铸铁，或PN≥2.5 MPa且阀体为碳素钢时，阀体材料代号可省略；部分连接形式与结构形式在命名中常省略（如法兰、闸阀“明杆/弹性/刚性/单闸板”、截止阀/节流阀“直通式”、球阀“浮动/直通式”、蝶阀“垂直板式”、隔膜阀“屋脊式”、止回阀“直通式/单瓣式”、安全阀“不封闭”等）。

　　Omission rule: When PN ≤ 1.6 MPa and the valve body is made of gray cast iron, or PN ≥ 2.5 MPa and the valve body is made of carbon steel, the valve body material code can be omitted; Partial connection forms and structural forms are often omitted in naming (such as flanges, gate valves with "rising stem/elastic/rigid/single disc", globe valves/throttle valves with "straight through", ball valves with "floating/straight through", butterfly valves with "vertical plate", diaphragm valves with "ridge", check valves with "straight through/single disc", safety valves with "non closed", etc.).

　　六 快速示例

　　Six Quick Examples

　　例1：Z41H-16C → 闸阀（Z）、手动省略（4=法兰）、结构省略（1=明杆楔式单闸板）、密封面Cr13系不锈钢（H）、PN1.6 MPa（16）、阀体碳钢（C）。

　　Example 1: Z41H-16C → Gate valve (Z), manual omission (4=flange), structural omission (1=rising stem wedge single gate), sealing surface Cr13 stainless steel (H), PN1.6 MPa (16), valve body carbon steel (C).

　　例2：Q21F-40P → 球阀（Q）、手动外螺纹（2=外螺纹）、浮动直通（1）、密封面氟塑料（F）、PN4.0 MPa（40）、阀体铬镍系不锈钢（P）。

　　Example 2: Q21F-40P → ball valve (Q), manual external thread (2=external thread), floating straight through (1), sealing surface fluoroplastic (F), PN4.0 MPa (40), valve body chromium nickel stainless steel (P).

　　例3：G6K41J-6 → 隔膜阀（G）、气动常开（6K）、法兰（4）、屋脊式衬胶（1J）、PN0.6 MPa（6）、阀体灰铸铁（省略）。

　　Example 3: G6K41J-6 → Diaphragm valve (G), Pneumatic normally open (6K), Flange (4), Roof type rubber lining (1J), PN0.6 MPa (6), Valve body gray cast iron (omitted).

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