线型及其含义：

比例：

水、汽管道代号：

工艺管道施工图常用图例：

水、汽管道阀门和附件图例：

给排水、采暖常用图例：

通风空调工程常用图例：

风道代号：

风道、阀门及附件图例：

风口和附件代号：

暖通空调设备图例：

调控装置及仪表图例：

各种执行机构可与风阀、水阀组合 表示相应功能的控制阀门。

消防工程基本图形符号：

消防工程辅助符号：

消防工程灭火器符号：

消防管路及配件符号：

消防工程固定灭火器系统符号：

消防工程灭火设备安装处符号：

消防设施：

消防工程自动报警设备符号：

管道图例：

管道附件：

管道连接：

管件：

常见阀门：

给水配件：

小型给水排水构筑物：

给水排水设备：

仪表：

管道和设备布置平面图、剖面图示例：

管道和设备布置平面图应按假象除去上层板后俯视规则绘制，其相应的垂直剖面图应在平面图中表明剖切符号。

标准层平面图

平、剖面示例

平面图、剖面图索引符号的画法：

平面图、剖面图中的局部需另绘详图时，应在平、剖面图上标注索引符号。索引符号的画法见下图。

索引符号的画法

内视符号画法：

当表示局部位置的相互关系，在平面图上应标注内视符号。

内视符号画法

系统编号：

1、一个工程设计中同时有供暖、通风、空调等两个及以上的不同系统时，应进行系统编号。

2、暖通空调系统编号、入口编号，应由系统代号和顺序号组成。

3、系统代号用大写拉丁字母表示，顺序号用阿拉伯数字表示。当一个系统出现分支时，可采用下图的画法。

系统代号

立管号的画法

竖向布置的垂直管道系统，应标注立管号，在不一致引起误解时，可只标注序号，但应与建筑轴线编号有明显区别。

立管号的画法

管道相对标高的画法：

1、在无法标注垂直尺寸的图样中，应标注标高。标高应以m为单位，并应精确到cm或mm。

2、标高符号应以直角等腰三角形表示。当面标准层较多时，可只标注与本层楼（地）板面的相对标高。

3、水、汽管道所标高未予说明时，应表示为管中心标高。

4、水、汽管道标注管道外底或顶标高时，应在数字前加“底”或“顶”字样。

5、矩形风管所注标高应表示管底标高；圆形风管所注标高应表示管中心标高。当不采用此方法标注时，应进行说明。

6、平面图中无坡度要求的管道标高可标注在管道截面尺寸后的括号内。必要时，应在标高数字前加“底”或“顶”的字样。

相对标高的画法

管道截面尺寸的标注符号及画法：

1、低压流体输送用焊接管道规格应标注公称通径或压力。公称通径的标记应由字母“DN”后跟一个以亳米表示的数值组成；公称压力的代号应为“PN”。

2、输送流体用无缝钢管、螺旋缝或直缝焊接钢管、铜管、不锈钢管，当需要注明外径和壁厚时，应用“D（或Φ）外径×壁厚”表示。在不致引起误解时，也可采用公称通径表示。

3、塑料管外径应用“de”表示。

4、圆形风管的截面定型尺寸应以直径“Φ”表示，单位应为mm.

5、矩形风管（风道）的截面定型尺寸应以“A×B”表示。“A”应为该视图投影面的边长尺寸，“B”应为另一边尺雨。A、B单位均应为mm。

6、水平管道的规格宜标注在管道的上方；竖向管道的规格宜标注在管道的左侧。双线表示的管道，其规格可标注在管道轮廓线内。

管道截面尺寸的画法

多条管线的规格标注方法：

多条管线规格的画法

风口、散流器表示方法：

风口、散流器的表示方法

定位尺寸的表示方法：

定位尺寸的表示方式

单线管道转向的画法：

单线管道转向的画法

双线管道转向的画法：

双线管道转向的画法

单线管道分支的画法：

单线管道分支的画法

双线管道分支的画法：

双线管道分支的画法

送风管转向的画法：

送风管转向的画法

回风管转向的画法：

管道断开的画法

平面图、剖视图中管道因重叠、密集需断开时，应采用断开画法。

管道断开的画法

管道在本图中断的画法：

管道在本图中断，转至其他图面表示（或由其他图面引来）时，应注明转至（或来自的）的图纸编号。

管道在本图中断的画法

管道交叉的画法：

管道交叉的画法

管道跨越的画法：

管道跨越的画法

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萧金玉1488化工上用的阀门 描述:PVDF 1 - 4 NPT, 型号:PA 10 VM PVDF F314 每个符号都表示什么? -
蔺是莫15796304597 ______ 重庆日安阀门温馨提示: 1,PVDF:聚偏氟乙烯,外观为半透明或白色粉体或颗粒. 2,PN 10 :就是压力1.0MPA 3,NPT:美标 从我们和很多化工厂合作的客户来看,楼主需要的是一种耐腐蚀的阀门,但阀门种类有很多,你得跟你们技术咨询下,具体情况.

萧金玉1488煤气闸阀型号主要有什么
蔺是莫15796304597 ______ 煤气闸阀型号主要有哪些:有Z40、Z41、Z42、Z43、Z44、Z45、Z46这七种,Z40是明杆楔式弹性闸板、Z41是明杆楔式刚性单闸板、Z42是明杆楔式刚性双闸板、Z43是明杆平行式刚性单闸板、Z44是明杆平行式刚性双闸板、Z45是暗杆楔式刚性单闸板、Z46是暗杆楔式刚性双闸板.

萧金玉1488什么叫气开阀,气关阀,其表示符号各是什么? -
蔺是莫15796304597 ______[答案] 答:气开阀指当输入到阀的气压信号增加时,调节阀开度增大而当输入气压信号没有时阀关闭的控制阀,代号FC.当仪表空气中断时,该种阀门关闭.

萧金玉1488各种符号:长方型里给一个斜线表示什么阀门? -
蔺是莫15796304597 ______ 展开全部 Z—闸阀,4—法兰连接,1—楔式单闸板,H—硬密封面,40—公称压力40公斤,Dg50—公称通径50mm.

萧金玉1488化工企业常用阀门有那些及使用方法及一些符号的说明? -
蔺是莫15796304597 ______ 化工常用阀门的种类1、按用途分:截断阀类、调节阀类、分流阀类、止回阀类、安全阀类;2、按作用力分:他动作用阀门、自动作用阀门.http://www.cngspw.com/vbooks/ShowSubject.asp?SubjectID=7455有关阀门资料http://www.myyibiao....

萧金玉1488阀门规格 Z41H - 40 Dg50 中各符号及数字表示 什么意思? -
蔺是莫15796304597 ______ Z—闸阀,4—法兰连接,1—楔式单闸板,H—硬密封面,40—公称压力40公斤,Dg50—公称通径50mm.

萧金玉1488蝶阀D40J - 10C 各符号代表什么意思 -
蔺是莫15796304597 ______ D是蝶阀,4代表法兰连接,0不知道是什么意思,一般应该都是1,中线的,J代表衬胶密封,10代表工作压力10公斤,C代表阀体材质为铸钢.双德阀门小李为您解答,希望可以帮到您

萧金玉1488请教懂的人,关于阀门的表示方法? -
蔺是莫15796304597 ______ 呵呵,看来LF,LM没人答对哈.LF,是＂宽凹面＂ 是Large Female的缩写LM,是＂宽凸面＂ 是Large Male的缩写.这是在ANSI B16.5 Table 4 中写的再清楚不过了.一就是一,二就是二,不能含糊不清.[ ]

萧金玉1488阀门上有字母FYV和WCB是什么意思?是不同类型的阀门么
蔺是莫15796304597 ______ WCB是铸的碳钢,WCB的锻件是A105.在阀门上写是表示阀体材料,阀门别的部件可能是别的材料FYV应该是该阀门的商标

萧金玉1488暖气阀门 - 暖气进水阀门上,有标识“O和S”两个字母哪个代表开?或者什?
蔺是莫15796304597 ______ 暖气进水阀上标有“O ”为打开阀门,标有:“S”为关门阀门.铜球门一般是搬手 顺着管道为阀门在开位,搬手和管道相差90度为阀门在关闭位.旋转手轮开闭的阀门 是往右旋转到底为关闭阀门,往左旋转到底的为开启阀门.