dn250定位阀_dn250调节阀

导航：

• 1、dn250的阀门的法兰直径是多少？
• 2、DN250的阀门国家标准是什么
• 3、阀的问题啊
• 4、止回阀上面的dn250是什么意思

dn250的阀门的法兰直径是多少？

DN250的法兰外径是505mm，中心圆直径430mm，螺栓孔12-直径39 。

阀门（famen）是流体输送系统中的控制部件，具有截止、调节、导流、防止逆流、稳压、分流或溢流泄压等功能。

用于流体控制系统的阀门，从最简单的截止阀到极为复杂的自控系统中所用的各种阀门，其品种和规格相当繁多。阀门可用于控制空气、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。阀门根据材质还分为铸铁阀门，铸钢阀门，不锈钢阀门（201、304、316等），铬钼钢阀门，铬钼钒钢阀门，双相钢阀门，塑料阀门，非标订制等阀门材质。

DN250的阀门国家标准是什么

DN250阀门执行的国家标准如下:

国家标准GB/T9124-2000（附录A）《钢制管法兰 技术条件》参考了德国DIN2401-1977和美国ASME/ANSI B 16.5a-1992标准中压力温度额定值的制订原则及方法，利用我国常用的法兰材料，参照国际标准ISO/DIS7005-1-1992分别制订了适用于两个公称压力系列（PN0.25-4.0MPA、PN2.0-42.0MPA）的法兰压力—温度额定值。标准中规定了13种法兰材料在12个公称压力等级下，工作温度为20-530℃的最大允许工作压力。

DN250阀门生产标准:

公称通径(DN):250mm

外径(D):280mm

壁厚（0.6MPa压力下）：给水8.2mm；化工13.4mm。

阀的问题啊

控制阀标准汇总

GB/T13852-1992

船用液压控制阀技术条件

General specification of hydraulic control valves for ship

GB/T17490-1998

液压控制阀油口、底板、控制装置和电磁铁的标识

Hydraulic fluid power--Identification of valve ports,subplates,control devices and solenoids

GB/T15623.1-2003

液压传动 电调制液压控制阀 第1部分：四通方向流量控制阀试验方法

Hydraulic fluid power-Electrically modulated hydraulic control valves-Part 1:Test methods for four-way directional flow control valves

GB/T15623.2-2003

液压传动 电调制液压控制阀 第2部分：三通方向流量控制阀试验方法

Hydraulic fluid power-Electrically modulated hydraulic control valves-Part 2:Test methods for three-way directional flow control valves

GB/T17213.7-1998

工业过程控制阀第7部分: 控制阀数据单

Industrial-process control valves Part 7: Control valve data sheet

GB/T17213.8-1998

工业过程控制阀第8部分: 噪声的考虑第1节: 实验室内测量空气动力流流径控制阀产生的噪声

Industrial-process control valves Part 8: Noise considerations Section 1: Laboratory measurement of noise generated by aerodynamic flow through control valves

GB/T17213.1-1998

工业过程控制阀第1部分: 控制阀术语和总则

Industrial--Process control valves Part 1: Control valve terminology and general considerations

GB/T17213.5-1998

工业过程控制阀第5部分: 标志

Industrial-process control valves Part 5: Marking

GB/T2514-1993

四油口板式液压方向控制阀安装面

Hydraulic fluid power--Four-port directional control valves--Mounting surfaces

GB/T8104-1987

流量控制阀试验方法

Hydraulic fluid power--Valves--Testing method of flow control valves

GB/T7940.3-2001

气动五气口方向控制阀第三部分: 功能识别编码体系

Pneumatic fluid power--Five-port directional control valves--Part 3: Code system for communication of valve functions

GB/T8106-1987

方向控制阀试验方法

Hydraulic fluid power--Valves--Testing method of directional control valves

GB/T7940.2-2001

气动五气口方向控制阀第二部分带电气接头的安装面

Pneumatic fluid power--Five-port directional control valves--Part 2: Mounting interface surfaces with optional elettrical connector

GB/T8105-1987

压力控制阀试验方法

Hydraulic fluid power--Valves--Testing method of pressure control valves

GB/T7940.1-2001

气动五气口方向控制阀第一部分: 不带电气接头的安装面

Pneumatic fluid power--Five-port directional control valves--Part 1: Mounting interface surfaces without electrical connector

GB/T8100-1987

板式联接液压压力控制阀(不包括溢流阀)顺序阀、卸荷阀、节流阀和单向阀安装面

Hydraulic fluid power--Pressure control valves (excluding pressure relief valves ), sequence valves, unloading valves, throttle valves and check valves--Mounting surfaces

GB/T8098-2003

液压传动带补偿的流量控制阀安装面

Hydraulic fluid power--Compensated flow control valves--Mounting surfaces

JB/T7387-1994(2005复审)

工业过程控制系统用电动控制阀

NF C46-520-1993

工业过程控制阀.第8部分:噪声问题.第2节:通过控制阀的液压流动产生的噪声的实验室测量

(Industrial-process control valves. Part 8 : noise considerations. Section 2 : laboratory measurement of noise generated by hydrodynamic flow through control valves.)

NF C46-522-1994

工业处理控制阀.第8部分:噪声条款.第4节:液压流动产生的噪声预定(EN 534-8-4)

(Industrial-process control valves. Part 8 : noise considerations. Section 4 : prediction of noise generated by hydrodynamic flow.)

NF E49-080-1-2002

气压液动.五通定向控制阀.第1部分:不带电连接器的安装接口

(Pneumatic fluid power - Five-port directional control valves - Part 1 : mounting interfaces without electrical connector.)

NF E49-080-2-2002

气压液动.五通方向控制阀.第2部分:任选电气连接器的安装接口面

(Pneumatic fluid power - Five-port directional control valves - Part 2 : mounting interface surfaces with optional electrical connector.)

NF C46-505-1998

绝缘过程控制阀.第2-3部分:流量容量.试验过程

(Industrial-process control valves. Part 2-3 : flow capacity. Test procedures.)

NF C46-630-1998

工业过程控制阀.第6部分:控制阀与定位器连接用安装细节.第1节:线性传动装置上安装的定位器

(Industrial-process control valves. Part 6 : mounting details for attachment of positioners to control valves. Section 1 : positioner mounting on linear actuators.)

NF E29-453-2000

工业过程控制阀门

(Industrial process control valves.)

NF E29-316-5-2001

供水用阀门.适用性要求和专用检查试验.第5部分:控制阀门

(Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 5 : control valves.)

NF C46-521-2001

工业过程控制阀.第8部分:噪声问题.第3节:气动控制阀噪声预测法

(Industrial-process control valves - Part 8-3 : noise considerations - Control valves aerodynamic noise prediction method.)

NF E48-435-1998

液压传动.尺寸02、03和05的四端口模式排气阀和四端口方向控制阀.夹紧尺寸

(Hydraulic fluid power. Four-port modular stack valves and four-port directional control valves, sizes 02, 03 and 05. Clamping dimensions.)

NF C46-519-2001

工业过程控制阀.第8部分:噪声考虑.第1节:实验室测量气动流经控制阀产生的噪声

(Industrial-process control valves - Part 8 : noise considerations - Section 1 : laboratory measurement of noise generated by aerodynamic flow through control valves.)

NF C46-531-2001

工业过程控制阀.第6-2部分:定位器装到控制阀的安装细则.旋转传动装置上安装的定位器

(Industrial-process control valves - Part 6-2 : mounting details for attachment of positioners to control valves - Positioner mounting on rotary actuators.)

NF E49-091-2002

气压传动.控制阀和其它部件的孔口和控制机械的验证

(Pneumatic fluid power - Identification of ports and control mechanisms of control valves and other components.)

XP E29-140-1999

使用气体燃料的家用装置的控制阀.安全控制阀(带有集中自动密闭器的)

(Control cocks for household appliances using gaseous fuels - Safety cocks (with integrated automatic obturator).)

NF C46-510-2001

工业过程控制阀.第3-1部分:尺寸.双通球型直立式控制法兰阀门的面对面尺寸和双通球型角度控制法兰阀门的中心

(Industrial-process control valves - Part 3-1 : dimensions - Face-to-face dimensions for flanged, two-way, globe-type, straight pattern and centre-to-face dimensions for flanged, two-way, globe-type, a)

NF C46-511-2001

工业过程控制阀.第3-2部分:尺寸.蝶阀除外的旋转控制阀门的面对面尺寸

(Industrial-process control valves - Part 3-2 : dimensions - Face-to-face dimensions for rotary control valves except butterfly valves.)

NF E49-090-2-2003

气压传动.18mm和26mm五气口方向控制阀.第2部分:带光学电接头的安装面

(Pneumatic fluid power - Five-port directional control valves, sizes 18 mm and 26 mm - Part 2 : mounting interfaces with optional electrical connector.)

NF C46-512-1999

工业处理控制阀.第3-3部分:尺寸.对焊接的头尾相接尺寸.两接头球型直接式控制阀(欧洲标准EN 60534-3-3)

(Industrial-process control valves. Part 3-3 : dimensions. End-to-end dimensions for buttweld, two-way, globe-type, straight pattern control valves.)

ANSI/IEEE 1290-1996

核发电站电动控制阀门马达应用、防护、控制和试验指南

(Guide for MOV (Motor-Operated Valve) Motor Application, Protection, Control, and Testing in Nuclear Power Generating Stations)

ANSI/FCI 87-2-1990

弹簧模板驱动控制阀动力信号标准

(Power Signal Standard for Spring-Diaphragm Actuated Control Valves)

ANSI/ISA 75.08.02-2003

无凸缘的控制阀端面间的尺寸(级别150、300和600)

(Face-to-Face Dimensions for Flangeless Control Valves (Classes 150, 300, and 600) )

ANSI/ISA S 75.08.03-2001

承插焊接端头和螺旋端头球状控制阀的面到面尺寸

(Face-to-Face Dimensions for Socket Weld-End and Screwed-End Globe-Style Control Valves (ANSI Classes 150, 300, 600, 900, 1500, and 2500))

ANSI/ISA 75.08.06-2002

带凸缘的球型控制阀体的面对面尺寸(类型900、1500和2500)

(Face-to-Face Dimensions for Flanged Globe-Style Control Valve Bodies (Classes 900, 1500, and 2500) )

ANSI/ISA 75.08.05-2002

端头对焊球型控制阀的面对面尺寸(类型150、300、600、900、1500和2500)

(Face-to-Face Dimensions for Buttweld-End Globe-Style Control Valves (Classes 150, 300, 600, 900, 1500, and 2500) )

ANSI/ISA 75.01.01-2002

尺寸控制阀用流量方程式

(Flow Equations for Sizing Control Valves )

ANSI/ISA 75.08.01-2002

整体式带凸缘的球型控制阀体的面对面尺寸(类型125、150、250、300和600)

(Face-to-Face Dimensions for Integral Flanged Globe-Style Control Valve Bodies (Classes 125, 150, 250, 300, and 600) )

ANSI/ISA S 75.19.01-2001

控制阀的静水试验

(Hydrostatic Testing of Control Valves)

ANSI/ISA S 75.08.04-2001

对焊端头球状控制阀的面到面尺寸

(Face-to-Face Dimensions for Buttweld-End Globe-Style Control Valves)

ANSI/ISA S 75.08.07-2001

独立法兰球状控制阀的面到面尺寸

(Face-to-Face Dimensions for Separable Flanged Globe-Style Control Valves (Classes 150, 300, and 600))

ANSI/(NFPA) T 3.5.14 R1-1997

液力传动.直接控制阀门.分界特性的测定方法

(Hydraulic Fluid Power - Directional Control Valve - Method for Determining the Metering Characteristics)

ANSI/(NFPA) T 3.21.8-1990

气压液动.反应时间的测量.直接控制阀门

(Pneumatic Fluid Power - Measurement of Response Time - Directional Control Valves)

ANSI/ISA S 75.15-1993

对焊端球状控制阀的面对面尺寸(ANSI等级150、300、600、900、1500、2500)

(Face-to-Face Dimensions for Buttweld-End Globe-Style Control Valves (ANSI Classes 150, 300, 600, 900, 1500, and 2500))

ANSI/FCI 91-1-1997

控制阀门密封的质量标准

(Standard for Qualification of Control Valve Stem Seals)

ANSI/UL 753-1996

消防装置用自动供水控制阀的警报附件

(Alarm Accessories for Automatic Water-Supply Control Valves for Fire-Protection Service)

BS EN 60534-2-5-2003

工业过程控制阀.流通能力.通过有段间恢复功能的多段控制阀的流体流量的校准公式

(Industrial-process control valves - Flow capacity - Sizing equations for fluid flow through multistage control valves with interstage recovery)

ASTM F 1985-1999

气力操作的球形控制阀标准规范

(Standard Specification for Pneumatic-Operated, Globe-Syle, Control Valves)

BS EN 60534-3-2-2001

工业过程控制阀.尺寸.蝶形阀除外的转式控制阀的端面距

(Industrial-process control valves - Dimensions - Face-to-face dimensions for rotary control valves except butterfly valves)

BS ISO 15407-2-2003

气压传动.五气口方向控制阀,规格18mm和26mm.有任选电接头的安装接口

(Pneumatic fluid power - Five-port directional control valves, sizes 18 mm and 26 mm - Mounting interface surfaces with optional electrical connector)

BS ISO 12238-2001

气压液动.方向控制阀门.转换时间的测量

(Pneumatic fluid power - Directional control valves - Measurement of shifting time)

BS ISO 5599-1-2001

气压液动.五通方向控制阀.不带电连接器的安装接口表面

(Pneumatic fluid power - Five-port directional control valves - Mounting interface surfaces without electrical connector)

BS ISO 5599-2-2001

气压液动.五通方向控制阀.任选电气连接器的安装接口面

(Pneumatic fluid power - Five-port directional control valves - Mounting interface surfaces with optional electrical connector)

BS EN 60534-6-2-2001

工业过程控制阀.定位器装到控制阀的安装细则.旋转传动装置上安装的定位器

(Industrial-process control valves - Mounting details for attachment of positioners to control valves - Positioner mounting on rotary actuators)

BS EN 1074-5-2001

供水阀门.适用性和专用要求的试验.控制阀门

(Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Control valves)

BS EN 60534-8-3-2000

工业流程控制阀.噪声问题.控制阀的空气动力噪声预报法

(Industrial-process control valves - Noise considerations - Control valve aerodynamic noise prediction method)

BS EN 60534-2-3-1998

工业过程控制阀.流量.试验程序

(Industrial-process control valves - Flow capacity - Test procedures)

BS EN 60534-8-1-2001

工业过程控制阀.噪声问题.通过控制阀的动力噪声的实验室测量

(Industrial-process control valves - Noise considerations - Laboratory measurement of noise generated by aerodynamic flow through control valves)

BS EN 60534-3-1-2000

工业过程控制阀.尺寸.带法兰的两路、球型、直立式控制阀门的面对面尺寸和带法兰的两路、球型、角度控制阀门

(Industrial-process control valves - Dimensions - Face-to-face dimensions for flanged, two-way, globe-type, straight pattern and centre-to-face dimensions for flanged, two-way, globe-type, angle patter)

BS EN 1349-2000

工业处理控制阀门

(Industrial process control valves)

BS ISO 15407-1-2000

18mm和26mm五气口气动方向控制阀.无电插头的安装界面

(Pneumatic fluid power - Five-port directional control valves, sizes 18 mm and 26 mm - Mounting interface surfaces without electrical connector)

BS ISO 11727-1999

气动流体力学.控制阀和其它元件的控制机械装置和气门的识别

(Pneumatic fluid power - Identification of ports and control mechanisms of control valves and other components)

BS EN 60534-3-3-1998

工业过程控制阀.尺寸.对接焊接,两向,球型,垂直模式控制阀的末端对末端尺寸

(Industrial-process control valves - Dimensions - End-to-end dimensions for buttweld, two-way, globe-type, straight pattern control valves)

BS EN 60534-2-1-1999

工业过程控制阀 .流容.安装条件下液流规模方程

(Industrial-process control valves - Flow capacity - Flow capacity - Sizing equations for fluid flow under installed conditions)

BS ISO 6263-1997

液压传动.补偿式流量控制阀.装配面

(Hydraulic fluid power - Compensated flow-control valves - Mounting surfaces)

BS ISO 10770-2-1998

液压传动.电模式液压控制阀.第2部分:三向流动控制阀的试验方法

(Hydraulic fluid power - Electrically modulated hydraulic control valves - Test methods for three-way directional flow control valves)

BS ISO 10770-1-1998

液压传动.电模式液压控制阀.第1部分:四向流动控制阀的试验方法

(Hydraulic fluid power - Electrically modulated hydraulic control valves - Test methods for four-way directional flow control valves)

BS EN 60534-6-1-1998

工业过程控制阀 .控制阀调节器连接用安装元件.直线传动装置上调节器的安装

(Industrial-process control valves - Mounting details for attachment of positioners to control valves - Positioner mounting on linear actuators)

BS ISO 7790-1998

液压传动.规格为03和05型的四油口标准设计叠阀和四油口定向控制阀.紧固尺寸

(Hydraulic fluid power - Four-port modular stack valves and four-port directional control valves, sizes 02, 03 and 05 - Clamping dimensions)

EN 60534-8-1-2000

工业过程控制阀 第8部分：噪声的考虑 第1节：气动流流径控制阀产生的噪声的实验室测量

Industrial-process control valves - Part 8: Noise consideration; Section 1: Laboratory measurement of noise generated by hydrodynamic aerodynamic flow through control valves (IEC 60534-8-1:1986)

EN 60534-8-4-1994

工业过程控制阀 第8部分：噪声问题 第4节：流动产生的噪声的预测

Industrial-process control valves - Part 8: Noise considerations - Section 4: Prediction of noise generated by hydrodynamic flow (IEC 60534-8-4:1994)

EN 60534-8-3-2000

工业流程控制阀 .第8-3部分 噪声问题 通过控制阀的动力噪声预测法

Industrial-process control valves - Part 8-3: Noise considerations; Control valve aerodynamic noise prediction method (IEC 60534-8-3:2000)

EN 1074-5-2001

供水阀门 目的要求的适应性和合适的认证试验 第5部分：控制阀门

Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 5: Control valves

EN 60534-3-1-2000

工业过程控制阀 第3－1部分：尺寸 法兰双通球形直型控制阀的端面间距尺寸和有法兰双通球型角型控制阀的

Industrial-process control valves - Part 3-1: Dimensions - Face-to-face dimensions for flanged, two-way, globe-type, straight pattern and centre-to-face dimensions for flanged, two-way, globe-type, angle pattern control valves (IEC 60534-3-1:2000)

EN 60534-2-1-1998

工业过程控制阀 第2－1部分：流通能力 安装条件下流体流量的校准公式

Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions (IEC 60534-2-1:1998)

EN 60534-1-1993

工业过程控制阀 第1部分 控制阀术语和一般考虑

Industrial-process control valves - Part 1: Control valve terminology and general considerations (IEC 60534-1:1987)

EN 60534-3-2-2001

工业过程控制阀 第3部分：尺寸 第2节：无法兰控制阀（薄型蝶阀除外）的端面间距尺寸

Industrial-process control valves - Part 3-2: Dimensions - Face-to-face dimensions for rotary control valves except butterfly valves (IEC 60534-3-2:2001)

EN 60534-3-3-1998

工业过程控制阀 第三部分：尺寸 对接焊接 两向 球型 垂直模式控制阀的末端对末端尺寸

Industrial-process control valves - Part 3-3: Dimensions - End-to-end dimensions for buttweld, two-way, globe-type, straight pattern control valves (IEC 60534-3-3:1998)

EN 60534-6-1-1997

工业过程控制阀 第6－1部分：定位器联到控制阀执行机构的安装细则 第1节：直线传动装置上调节器的安装

Industrial-process control valves - Part 6: Mounting details for attachment of positioners to control valves - Section 1: Positioner mounting on linear actuators (IEC 60534-6-1:1997)

EN 60534-6-2-2001

工业过程控制阀 第6－2部分：定位器联到控制阀执行机构的安装细则 环形执行机构定位器

Industrial-process control valves - Part 6-2: Mounting details for attachment of positioners to control valves; Positioner mounting on rotary actuators (IEC 60534-6-2:2000)

EN 60534-8-2-1993

工业过程控制阀 第8部分 噪声考虑 第2节通过控制阀的流体产生的噪声的实验室测量报法

Industrial-process control valves- Part 8: noise consideration- Section 2: laboratory measurement of noise generated by hydrodynamic flow through control valves (IEC 60534-8-2:1991)

EN 60534-2-3-1998

工业过程控制阀 第2部分：流通能力 第3节：试验规程

Industrial-process control valves - Part 2-3: Flow capacity - Test procedures (IEC 60534-2-3:1997)

prEN 13959-2000

公称压力在DN6至DN250（含DN250）的防污染控制阀 E族A、B、C和D型

Anti-pollution check valves DN 6 to DN 250 inclusive - Family E, type A, B, C and D

prEN 60534-4-1998

工业过程控制阀 第4部分：检验和常规试验 草案

IEC 60534-4: Industrial-process control valves - Part 4: Inspection and routine testing

EN 1349-2000+AC-2001

工业加工控制阀门

Industrial process control valves

EN 60534-2-5-2003

工业加工控制阀 第2-5部分：流量 通过带级间恢复多级控制阀的流体尺寸方程

Industrial-process control valves - Part 2-5: Flow capacity; Sizing equations for fluid flow through multistage control valves with interstage recovery (IEC 60534-2-5:2003) / Note: Endorsement notice

BS ISO 4401-1996

液压传动.四油口定向控制阀.装配面

(Hydraulic fluid power - Four-port directional control valves - Mounting surfaces)

BS EN 60534-1-1989

工业过程控制阀 .第1部分:控制阀术语和一般考虑

(Industrial-process control valves - Industrial-process control valves - Control valve terminology and general considerations)

BS EN 60534-8-4-1994

工业过程控制阀.第8部分:噪声问题.第4节.流动产生的噪声的预报

(Industrial-process control valves - Noise considerations - Prediction of noise generated by hydrodynamic flow)

BS EN 60534-8-2-1991

工业过程控制阀.第8部分:噪声考虑.第2节:通过控制阀的流体产生的噪声的实验室测量

(Industrial-process control valves - Noise considerations - Laboratory measurement of noise generated by hydrodynamic flow through control valves)

BS 6494-4-1989

止回阀上面的dn250是什么意思

DN250

DN是公称直径。管子分内径、外径和公称直径。公称直径为管子内外和直径的平均数。因为管壁的厚度不同公称直径不同。250是指管子的公称直径为250mm。

标签：dn250定位阀