Basic Info.
Media
Liquefied Petroleum Vapor
Channel
Straight Through Type
Function
Blow-Down Valve, Relief Valve, Atmospheric Valve, Bypass-Valve
Temperature
High Temperature
Application
Industrial Usage, Water Industrial Usage, Household Usage
Manufacturer Level
Top Level
Transport Package
Wooden Box
Specification
Stainless Steel
Product Description
The Introduction of Products
OQDQ421F Solenoid Operated Emergency Cut-Off ValveOQDQ421F electromagnetic dynamic emergency cut-off valve points single acting and double-acting, can realize remote control opening and closing, just press the control button, the rest of the items are completed automatically within a specified time, single button safety set the stop button for opening and closing, ensure the operation safety, such as adding remote signal feedback system, can be in remote control room directly aware of valve operation.The performance specification| Specifications (DN) | Nominal pressure (Mpa) | Seal test pressure (Mpa) | Operating temperature (ºC) | Applicable medium | Control cylinder section | The power supply |
| Disc opening height (mm) | Use medium | Maximum atmospheric pressure when disc is open (Mpa) |
| 25 | 2.5 | 2.75 | -40ºC~+80ºC | Liquefied petroleum vapor | 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 |
| Part name | Material |
| The valve body | WCB |
| Valve ring | Four fluorine |
| The disc | 2Cr13 |
| Oil cylinder/cylinder | 25# steel/spheroidal ink |
| Spring | 4Cr13/60Si12mn |
| The piston | 2Cr13 |
2. When the disc is closed, the pressure is achieved by opening the relief valve.
3.Normally open type can be replaced by single action or customized as required.
4. Double-acting working principle: When the controller according to beforehand programmed procedure of a certain electromagnetic directional valve and output an electrical signal, the electromagnetic directional valve action, make with instrument air pressure by changing the electromagnetic directional valve into the inferior vena pneumatic actuator cylinder pushing the piston upward movement, the piston to drive the stem, the stem to open valve poppet valve core, cut off the reversing valve electrical signals, the piston reverse movement to close the valve, This valve configuration is called normally closed. On the contrary, to make normally open only in the electromagnetic valve and pneumatic actuator connection can be achieved by changing the way (see the following figure)Main external dimensions and connection dimensions (refer to composition)| DN | D | D1 | D2 | 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 | 22 | 3 | 8-Ф18 |
2. Do not remove the dust cover before installation of the valve, so that there is no dirt in the valve;
3. The valve can be installed in horizontal or vertical pipe for use, remove the dust cover when installing, and blow the pipe clean with air first, so as not to bring dirt into the valve cavity;
4. After 12-14 hours every day, the valve disc should be closed in time when the system does not work to avoid long-term compression of the spring and reduce the reliability of long-term use of the valve.Other Products
Ammonia with electromagnetic action emergency shut-off valvePurpose: Oqdq421f-25 ammonia solenoid emergency cut-off valve is divided into unit action type and double action type, can realize remote control opening and closing, only need to press the control button to enable, other matters are automatically completed within the specified time, single button safety opening and closing set emergency stop button, to ensure operation safety, such as installing remote signal feedback system, Valve running state can be directly learned from remote control room.
The performance specification| Specifications (DN) | Nominal pressure (Mpa) | Seal test pressure (Mpa) | Operating temperature (ºC) | Applicable medium | Control cylinder section | The power supply |
| Disc opening height (mm) | Use medium | Maximum atmospheric pressure when disc is open (Mpa) |
| 25 | 2.5 | 2.75 | -40ºC~+80ºC | Liquefied petroleum vapor | 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 |
2. When the disc is closed, the pressure is achieved by opening the relief valve.
3.Normally open type can be replaced by single action or customized as required.
4. Double-acting working principle: When the controller according to beforehand programmed procedure of a certain electromagnetic directional valve and output an electrical signal, the electromagnetic directional valve action, make with instrument air pressure by changing the electromagnetic directional valve into the inferior vena pneumatic actuator cylinder pushing the piston upward movement, the piston to drive the stem, the stem to open valve poppet valve core, cut off the reversing valve electrical signals, the piston reverse movement to close the valve, This valve configuration is called normally closed. On the contrary, to make normally open only in the electromagnetic valve and pneumatic actuator connection can be achieved by changing
5. The flow direction of valve working medium should be high into low out, and the flow direction of ordinary stop valve is just the opposite.
6. The connecting dimensions of valve flanges shall be in accordance with JB/T79.1-94 "Convex Integral cast steel flanges" or HG20592-97Main external dimensions and connection dimensions (refer to composition)| DN | D | D1 | D2 | 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 | 22 | 3 | 8-Ф18 |
QDQ421F Ammonia emergency cut-off valve is suitable for ammonia/gas storage tank, pipeline inlet and outlet control cut-off flow safety valve. In case of equipment failure, corrosion damage, seal failure, in the event of an emergency or an emergency, it is used to cut off the upstream gas source to avoid the expansion of the accident scope, control the impact of the accident, and reduce the loss of the accident.
Pneumatic emergency cut-off valve is equipped with low melting point (fusible alloy) plug, in the external temperature ≥80ºC fusible alloy melting plug pipe pressure relief cut-off valve quickly closed, to ensure the safety of storage tank system.
Ammonia emergency cut-off valve (pneumatic emergency cut-off valve) is composed of multi-spring pneumatic film actuator or floating piston actuator and regulating valve. It receives the signal of regulating instrument and controls the cutting, switching or switching of the fluid in the process pipeline. It has the characteristics of simple structure, sensitive reaction and reliable action. It can be widely used in petroleum, chemical industry, metallurgy and other industrial production departments. The emergency shut-off valve air source requires filtered (compressed air) nitrogen.The performance specification| Classes | 2.5/4.0Mpa |
| Cylinder working pressure | 0.3-0.6Mpa |
| The use of temperature | -40~+80ºC |
| The cylinder uses medium | Nitrogen, anhydrous air |
| Use medium | Natural gas, liquefied gas, liquid ammonia, gas |
| Fuse closed time | + 70 ºC |
| Closing time | ≤5 seconds |
| Cylinder opening pressure | ≥0.3-0.6Mpa |
| Seal ring, O-ring | Polytetrafluoroethylene, butane rubber |
| The valve body | Cast steel, stainless steel 304,316,316L |
| Spring | 50CrVA (Spring steel) |
| Oil cylinder, piston | Chromium stainless steel |
| Seal ring, O-ring | PTFE, butane rubber |
| Type | Often closed |
| DN | L | H | D | D1 | D2 | b | f | z-d |
| 15 | 130 | 215 | 95 | 65 | 45 | 16 | 2 | 4-14 |
| 20 | 150 | 255 | 105 | 75 | 55 | 16 | 2 | 4-14 |
| 25 | 160 | 285 | 115 | 85 | 65 | 16 | 2 | 4-14 |
| 32 | 180 | 300 | 135 | 100 | 78 | 18 | 2 | 4-18 |
| 40 | 200 | 320 | 145 | 110 | 85 | 18 | 2 | 4-18 |
| 50 | 230 | 380 | 160 | 125 | 100 | 20 | 3 | 4-18 |
| 65 | 290 | 420 | 180 | 145 | 120 | 22 | 3 | 8-18 |
| 80 | 310 | 450 | 195 | 160 | 135 | 22 | 3 | 8-18 |
| 100 | 350 | 520 | 230 | 190 | 160 | 24 | 3 | 8-23 |
| 125 | 400 | 558 | 270 | 220 | 188 | 28 | 3 | 8-23 |
| 150 | 480 | 750 | 300 | 250 | 218 | 30 | 3 | 8-25 |
| 200 | 600 | 950 | 360 | 310 | 278 | 34 | 3 | 12-25 |
| 250 | 650 | 1050 | 425 | 370 | 322 | 36 | 3 | 12-30 |
| 300 | 750 | 1120 | 485 | 430 | 390 | 40 | 3 | 16-30 |
Emergency cut-off valve should not be opened for a long time to avoid spring fatigue failure.Installation Precautions1. During storage, each external access of the valve is closed with plugs or cover plates and stored in a dry and ventilated room. Long-term storage should be regularly checked to eliminate dirt and coated with anti-rust oil on the processing surface to prevent corrosion.
2. Before installation, clean the valve and tighten the joint of each thread.
3. The cut-off valve adopts the principle of check valve, can only be one-way truncation, installation must pay attention to the valve mark, the end to be protected as the valve entrance. Valve installation should be noted: high in low out.
4. Flange sealing surface form, pressure grade and connection standard must be indicated when ordering.
JUNKANG FLUID TECHONOLOGY CO., LTD
Professional Control Valve Manufacturer
Company ProfileJunkang Fluid Technology Co., Ltd. is an expert manufacturer of regulating valves and pressure relief valves. The company is located in the "township of pumps and valves in China" - Oubei Sanqiao Industrial Zone. It is 30 kilometers away from Wenzhou Longwan International Airport, 12 kilometers away from Wenzhou South Station and 10 kilometers away from Yongjia Station.
The company has strong technical force, with a number of sets of advanced production equipment and testing equipment. The technical team has rich product experience. The company has large-scale production. Products with reasonable design, beautiful appearance, stable quality and other characteristics, are widely used in power plants, iron and steel plants, oil extraction, refining and chemical industry, paper making, metallurgy, medicine, construction and other fields, long-term trust and praise by new and old users.
Junkang Valve has always been market-oriented, strict quality control, to ensure that the interests of users are effectively guaranteed. The company adheres to the "high quality as the main line, excellence as the goal", adheres to the "business integrity, quality innovation" business philosophy, and in the fierce market competition to establish a mutually beneficial sales network, highlighting the unique advantages of Junkang Valve.Production EquipmentCertificate After- Sale Service can be Provided
ADD:Dongou Industial Area, Oubei Town, Yongjia County, Wenzhou City, Zhejiang, China
https://pneumaticvalve.en.made-in-china.com/
FAQ
1.What's Your Strong Products?
The control valve series are our strong products.
2.If The Factory Has The Control Valve In Stock?
There are no control valve in stock at anytime, because this kinds of products are made by client's requirements
3.Can I request to advance the shipment?
It should be depends on whether there is sufficient inventory in our warehouse.
4.Can I request to change the form of packaging and transportation?
Yes, we can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.
The End
Address:
Liandu District, Lishui, Zhejiang, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Chemicals, Health & Medicine, Industrial Equipment & Components, Instruments & Meters, Manufacturing & Processing Machinery, Service, Tools & Hardware
Management System Certification:
ISO 9001, ISO 9000, QC 080000, ISO 29001
Company Introduction:
Zhejiang Junkang Valve Technology Co., Ltd. is an expert manufacturer of regulating valves and pressure relief valves. The company is located in the "township of pumps and valves in China" - Oubei Sanqiao Industrial Zone. It is 30 kilometers away from Wenzhou Yongqiang International Airport, 12 kilometers away from Wenzhou South Station and 10 kilometers away from Yongjia Station.
In 2011, founded Junkang Fluid Technology Co., Ltd., the company has strong technical force, with a number of sets of advanced production equipment and testing equipment. The company currently has more than 30 employees, including 5 core technical personnel. The technical team has rich product experience. The company has large-scale production. There are mainly four type products: Self-Operated Control Valve, Linear Control Valve, Ball Valve and Butterfly Valve
The company specializes in the production and sales of automatic control valves, pipeline pressure control, flow control, temperature control, regulating valves and other products, These Products with reasonable design, beautiful appearance, stable quality and other characteristics, are widely used in power plants, iron and steel plants, oil extraction, refining and chemical industry, paper making, metallurgy, medicine, construction and other fields, long-term trust and praise by new and old users.
Junkang Valve has always been market-oriented, strict quality control, to ensure that the interests of users are effectively guaranteed. The company adheres to the "high quality as the main line, excellence as the goal", adheres to the "business integrity, quality innovation" business philosophy, and in the fierce market competition to establish a mutually beneficial sales network, highlighting the unique advantages of Junkang.
We cherish the JUNKANG brand which has been forged with sweat for many years, and cherish every hard-won honor. We will continue to work harder, innovate continuously and be pragmatic. Junkang continuously creates employment opportunities for the society, pays taxes honestly, and actively promotes the civilization and progress of society. We will use standard management enterprises, brand products to create markets and sincerely serve customers.
Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with an irresistible force.
We sincerely welcome customer from all walks of life to negotiate, inspect and guide us. We are willing to join hands with you and compose a song of triumph on the road to success.
Wants More information can Contacts us:
ADD: Dongou Industial Area, Oubei Town, Yongjia County, Wenzhou City, Zhejiang, China
){kind=link}