截止阀

截止阀又称截门阀，属于强制密封式阀门，所以在阀门关闭时，必须向阀瓣施加压力，以强制密封面不泄漏。当介质由阀瓣下方进入阀门时，操作力所需要克服的阻力，是阀杆和填料的摩擦力与由介质的压力所产生的推力，关阀门的力比开阀门的力大，所以阀杆的直径要大，否则会发生阀杆顶弯的故障。按连接方式分为三种：法兰连接、丝扣连接、焊接连接。从自密封的阀门出现后，截止阀的介质流向就改由阀瓣上方进入阀腔，这时在介质压力作用下，关阀门的力小，而开阀门的力大，阀杆的直径可以相应地减少。同时，在介质作用下，这种形式的阀门也较严密。我国阀门“三化给”曾规定，截止阀的流向，一律采用自上而下。截止阀开启时，阀瓣的开启高度，为公称直径的25%～30%时.流量已达到最大，表示阀门已达全开位置。所以截止阀的全开位置，应由阀瓣的行程来决定。

截止阀（stop valve,Globe Valve）的启闭件是塞形的阀瓣，密封上面呈平面或海锥面，阀瓣沿阀座的中心线作直线运动。阀杆的运动形式，（通用名称：暗杆），也有升降旋转杆式可用于控制空气、水、蒸汽、各种腐蚀性介质、泥浆、油品、液态金属和放射性介质等各种类型流体的流动。因此，这种类型的截流截止阀阀门非常适合作为切断或调节以及节流用。由于该类阀门的阀杆开启或关闭行程相对较短，而且具有非常可靠的切断功能，又由于阀座通口的变化与阀瓣的行程成正比例关系，非常适合于对流量的调节。

结构特点与用途Strucure features and usages:

1、全关时手轮按顺时针方向旋转；

2、可以安装在管道的任何位置上，介质从下往上流；

3、不锈钢截止阀适用于各类腐蚀性介质的管道上，有良好的防腐性和足够的强度；

4、合金钢截止阀适用于耐高温的蒸汽、油品管道上，具有耐高温特点。

1.When fully closed,the handwheel rotates clockwise.

2.Able to be mounted on any position of the pipeline,the medium flows from down to up.

3.Stainless steel made stop valve is of good anti-corrosive property and enough strength and suitable for various pipelines with corrosive medium.

4.Alloy steel made stop valve features high-temperature resistance,suitable for high-temperature steam and oil goods pipelines.

主要尺寸及重量Main dimensions and weight

试验压力Test pressure

公称压力PN(MPa)Nominal pressure1.62.54.06.410.016.0壳体强度试验Shell strength test2.43.86.09.61524上密封试验Back seal test1.82.84.47.01118密封试验Seal test1.82.84.47.01118

使用范围Scope of use

产品类型Product classification适用介质Suitable medium适用温度（℃）Suitable temperature

J41(H.Y)-C型

J941(H.Y)-C型

水、蒸汽、油品Water,steam,oilgoods

≤425℃

≤450℃

J41W-P型

J941W-P型

硝酸类Nitric acid≤200℃J41W-R弄醋酸类Acetic acid≤200℃

J41Y-I型

J941Y-I型

水、蒸汽、油品Water,steam,oilgoods≤550℃

主要零件材料Material for main parts

产品类型Product classification

零件名称Part name阀体、阀盖Body bonnet阀杆Valve stem

阀瓣

Disc

密封面Sealing face阀杆螺母Yoke nut填料Packing紧固件Fastener手轮Handwheel

J41(H.Y)-C型

J941(H.Y)-C型

25、WCB铬不锈钢Cr.Stainless steel

2Cr13

25

H:不锈钢

Y:钴基硬质合金钢

H:Stainless steel

Y:Co-based carbide alloy steel

铝青铜Albronze柔性石墨Flexible graphite

优质碳钢

High-grade carbon steel

可锻铸铁Forgeable cast-iron

J41W-P型

J941W-P型

铬镍钛钢Cr.Ni.Ti steel铬镍钛钢Cr.Ni.Ti steel铬镍钛钢Cr.Ni.Ti steel铬镍钛钢Cr.Ni.Ti steel铝青铜Albronze柔性石墨Flexible graphite不锈钢Stainless steel可锻铸铁Forgeable cast-ironJ41W-R型铬镍钼钛钢Cr.Ni.Mo.Ti steel铬镍钼钛钢Cr.Ni.Mo.Ti steel铬镍钼钛钢Cr.Ni.Mo.Ti steel铬镍钼钛钢Cr.Ni.Mo.Ti steel铝青铜Albronze柔性石墨Flexible graphite不锈钢Stainless steel可锻铸铁Forgeable cast-iron

J41Y-I型

J941Y-I型

铬钼钢

Cr.Mo steel

铬钼钢

Cr.Mo steel

合金钢

Alloy steel

钴基硬质合金钢

C0-based carbide alloy steel

铝青铜Albronze柔性石墨Flexible graphite

合金钢

Alloy steel

可锻铸铁Forgeable cast-iron

主要尺寸和重量Main dimensions and weight

公称通径DN

Nominal diameter

主要外形尺寸和连接尺寸（mm）Main external and connecting dimensions重量（kg）WeightLDD₁D₂bfz-dHD₀J41(H.Y.B)-16C J41W-16P J41W-16R J41Y-16I101309060401424-141981204.7151309565451624-142181205.22015010575551624-142581407.12516011585651624-142751607.432180135100781824-182801808.540200145110851834-1833020012.5502301601251001834-183502402065290180145121834-1840028025803101951601352038-18355280351003502151801552238-18415320501254002452101852438-18460360751504802802402102438-2351040010020060033529526526312-2371040021025065040535532030312-2378645044630075046041037530312-23925500648

主要尺寸及重量Main dimensions and weight

公称通径DN Nominal

diameter

J41(H.Y.B)-25 J41W-25P J41W-25R J41Y-25I J941(H.Y)-25 J941W-25P J941W-25R J941Y-25I主要外形尺寸和连接尺寸（mm）Main external and connecting dimensions电动装置 Electric dewice重量（kg） WeightLDD₁D₂bfz-dH手H电D₀手动 Hand电动 Electric10130906041624-141981204.9151309565451624-142181205.42015010575551624-1425814072516011585651624-142751607.432180135100781824-182801808.540200145110851834-1833020012.5502301601251002034-18350645240DZW1011650652901801451202238-18400690280DZW1012562803101951601352238-18355715280DZW15130671003502301901602438-23415770320DZW2034.573125402702201882838-25460780360DZW3089127154803002502183038-25510875400DZW459821520060036031027834312-25710967400DZW6018032225065042537033236312-3078645044630075048543039040412-30925500654

公称通径DN Nominal

diameter

J41(H.Y)-40 J41W-40P J41W-40R J41Y-40I J941(H.Y)-40 J941W-40P J941W-40R J941Y-40I主要外形尺寸和连接尺寸（mm）Main external and connecting dimensions电动装置 Electric dewice重量（kg） WeightLDD₁D₂D₆bff₂z-dH手H电D₀手动 Hand电动 Electric101309060403516244-141981204.9151309565454016244-142331205.420151575555116244-1427514072516011585655816244-142851608.832180135100786618244-1830218011.840200145110857618344-1835520016.5502301601251008820344-18373645240DZW101246165290180145120110223448-18408690280DZW10133758031019516013512122348-18436715320DZW2014484100350230190160152434.58-23480770360DZW301601011254002702201881762834.58-25558782400DZW45892071504803002502182043034.58-25611875400DZW60982262006003753202822603834.512-307201160400DZW901190339

主要尺寸及重量Main dimensions and weight

公称通径DN Nominal diameter主要外形尺寸和连接尺寸(mm)Main external and connecting dimensions电动装置Electric dewice重量(kg)WeightLDD₁D₂D₆bff₂z-dH手H电D₀手动Hnad电动ElectricJ41(H.Y)-64 J941(H.Y)-64 J41Y-64I J941Y-64I1017010070503518244-141981205.71517010575554118244-14195140102019012590685120244-182281601325210135100785822244-1827518014.532230150110826624244-233252001940260165125957624344-2336024025503001751351058826348-23410710280DZW1035646534020016013011028348-23450750320DZW1548778038021017014012130348-23485785360DZW30568810043025020016815032348-25537837400DZW4512517112550029524020217636348-3063140013115055034028024020438348-34646450157200650405345300260443412-34813500283J41(H.Y)-100 J941(H.Y)-100 J41Y-100I J941Y-100I1017010070503520244-1419812061517010575554020244-14202140112019012590685122244-1822816013.225210135100785824244-182501801432230150110826624244-233262201540260165125957626344-2335924029503001951451128828344-25414710280DZW1549826534022017013811032348-25434750320DZW201651048038023018014812134348-25547785400DZW30951381004302652101721503834.58-30621837450DZW451152431255003102502101764234.58-347324501491505503502902502044634.512-34845003102006504303603122605434.512-41925550590J41(H.Y)-1601517011075524024244-1814814012.22019013090655126244-231561601525210140100725828244-231251801732230165115856630244-2520020021.440260175125927632344-2723124032503002151651328836348-25262250526534024519015211044348-30303320698038026020516812146348-30341400981004303002402001504834.58-34485450119
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