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OQDQ421F electromagnetic emergency shut-off valve


OQDQ421F electromagnetic emergency shut-off valve
Stable quality: implement quality monitoring throughout the process, meticulous and comprehensive detection!

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Sales: 021-31007323
Fax: 021-333321522
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  Product name : Solenoid operated emergency shut-off valve Product model : OQDQ421F
   Driving method : Electromagnetic Connection form : Flange  
   Structure form : Straight-through    Sealing material : Fluoroplastic
   Pressure range : 2.5MPa    Nominal diameter : DN25-DN250
   Common materials : Carbon steel, stainless steel    Technical consultation : 021-31007323

是国内著名〖 OQDQ421F电磁动紧急切断阀 〗制造商,也是国内大型【 切断阀 】生产商之一,公司自成立以来始终围绕客户的需求并持续创新,为广大的代理商和企业客户提供〖OQDQ421F电磁动紧急切断阀 〗解决方案,质量可靠,价格实惠,故畅销全国各地,欢迎新老客户来电,来函,我们将为您提供最优质的服务。 Hushan Valve Manufacturing (Shanghai) Co., Ltd. is a well-known manufacturer of OQDQ421F electromagnetic emergency cut-off valve in China and one of the large domestic [ cut-off valve ] manufacturers. Since its establishment, the company has always focused on customer needs and continued innovation for the majority Agents and corporate customers provide the "OQDQ421F electromagnetic emergency shut-off valve" solution, which is reliable in quality and affordable in price, so it sells all over the country. Welcome new and old customers to call us and send us a letter. We will provide you with the best service.

OQDQ421F 电磁动紧急切断阀 -- 用途 I. OQDQ421F electromagnetic emergency shut-off valve -- purpose

电磁动紧急切断阀 分单作用式与双作用式,能够实现远距离控制启闭,启用仅需按一下控制按钮,其余事项均在指定时间内自动完成,单钮安全启闭设置急停按钮,确保操作安全,如加装远程信号反馈系统,可于远距离控制室直接获悉阀门运行状态。 OQDQ421F electromagnetic emergency cut-off valve is divided into single-acting and double-acting types, which can realize remote control opening and closing. Only one control button is needed to activate. The rest of the tasks are automatically completed within a specified time. One-button safety opening and closing setting emergency stop button To ensure safe operation, such as installing a remote signal feedback system, you can directly learn the valve operating status in the remote control room.

OQDQ421F 电磁动紧急切断阀 -- 性能规范 Second, OQDQ421F electromagnetic emergency cut-off valve - performance specifications

 

specification

(DN)

Nominal

pressure

(Mpa)

seal

test

pressure

(Mpa)

jobs

temperature

) ( )

Be applicable

 

medium

Control cylinder part

Electricity

source

Disc

Open

height

(mm)

use

medium

Disc opening

Time

(Mpa) Pressure (Mpa)

25

2.5

2.75

~+80 -40 ~ + 80

Liquefied petroleum gas

15

Nitrogen

0.6MPa

-AC220 / DC24

40

2.5

2.75

18

0.6MPa

50

2.5

2.75

20

0.6MPa

80

2.5

2.75

27

0.6MPa

250

2.5

2.75

90

0.6MPa

OQDQ421F 电磁动紧急切断阀 -- 主要零件材料: 3. OQDQ421F electromagnetic emergency cut-off valve -- Materials of main parts:

  Part Name

material

Valve body

WCB

Body seal

Tetrafluoro

Disc

2Cr13

/ 气缸 Cylinder / cylinder

# / 球墨 25 # Steel / Spherical

spring

4Cr13 / 60Si12mn

piston

2Cr13

Fourth, the working principle and structure description:

、单作用式工作原理:阀门在无外压力操作情况下,阀瓣处于常闭状态,在管道或贮罐系统上使用时,靠电源和气源的压力将阀门打开,在气路的压力使用下阀门处于开启状态,当需要关闭阀门时,可将电源或气源压力泄掉,阀门即自动关。 1. Single-acting working principle: When the valve is operated without external pressure, the valve flap is normally closed. When it is used on a pipeline or tank system, the valve is opened by the pressure of the power source and the gas source, and the pressure in the gas path The lower valve is in the open state when used. When the valve needs to be closed, the pressure of the power supply or air source can be released, and the valve is automatically closed.

、阀瓣关闭时,压力是依靠打开泄压阀来实现。 2. When the valve flap is closed, the pressure is achieved by opening the pressure relief valve.

、常开式可采用单作用代替或按要求订做。 3. Normally open type can adopt single-acting instead or be customized.

、双作用式工作原理:当控制器按事先编好的程序对某个电磁换向阀输出一个电信号,该电磁换向阀动作,使带压仪表气源通过电磁换向阀的切换进入气动执行机构的气缸下腔推动活塞向上运动,活塞带动阀杆,阀杆提动阀芯使阀门开启,切断换向阀电信号,使活塞反向运动使阀门关闭,这种阀门配置称为常闭式。 4. Double-acting working principle: When the controller outputs an electric signal to an electromagnetic reversing valve according to a pre-programmed program, the electromagnetic reversing valve acts to make the gas source of the pressure instrument enter by switching the electromagnetic reversing valve. The lower cavity of the pneumatic actuator pushes the piston upward. The piston drives the valve stem. The valve stem opens the valve core to open the valve, cut off the electric signal of the reversing valve, and causes the piston to move in the opposite direction to close the valve. Closed. ( 见下图 ) Conversely, to make a normally open type, it can be realized only by changing the connection mode of the electromagnetic directional valve and the pneumatic actuator ( see the figure below )

主要外形尺寸和连接尺寸 ( 参照构图 ) Five, the main dimensions and connection dimensions ( refer to the composition ) :

DN

D

1 D 1

2 D 2

b

F

z-Ф

25

115

85

65

16

2

4-Ф14

40

145

110

85

18

2

4-Ф18

50

160

125

100

20

3

4-Ф18

80

195

160

135

twenty two

3

8-Ф18

6. Precautions for storage, installation and use:

、阀门通路两端必须加防护盖,存放在干燥、通风的室内,如长期存放应经常检查,防止锈蚀; 1. Protective covers must be added at both ends of the valve path and stored in a dry, ventilated room. If it is stored for a long time, it should be checked frequently to prevent corrosion;

、阀门在安装前不要拿掉防尘盖,使阀内无污物存在; 2. Do not remove the dust cover before the valve is installed, so that there is no dirt in the valve;

、阀门可安装在水平或垂直的管道上使用,安装时去掉防尘盖,管路先用空气吹干净,以免污物带进阀腔内; 3. The valve can be installed on horizontal or vertical pipelines. Remove the dust cover during installation. The pipeline should be cleaned by air first to prevent dirt from entering the valve cavity.

、阀门每天放 12-14 小时后,在系统不工作时应及时将阀瓣关闭,避免弹簧长期压缩,降低阀门长期使用的可靠性。 4. After the valve is placed for 12-14 hours every day , when the system is not working, the valve flap should be closed in time to avoid long-term compression of the spring and reduce the long-term reliability of the valve.

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