Basic Info.
Media
Ammonia/Gas Storage Tank
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
QDQ421F Ammonia Emergency Cut-Off Valve
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.Other Products
Liquid Ammonia Emergency Cut-off ValveQDY421f-16/40c liquid ammonia emergency cut-off valve combines the advantages of globe valve, check valve and pneumatic valve, using the lifting structure of globe valve and check valve to prevent the principle of media backflow. Shut-off valve has excellent technical performance, low load loss and high reliability, and remote hand pump matching use, using manual hydraulic control valve open - close.The cut-off valve is installed on the liquid ammonia, gas storage tank station or gas pipeline, so that in case of leakage or even fire on the pipeline or storage tank, the staff can relieve pressure through the remote oil pump, or melt the (fusible alloy) at 80ºC high temperature, the valve cylinder automatically relieve pressure, the valve quickly shut down and stop leakage. To protect personal safety, cut-off valve is the ideal choice of chemical dangerous goods closure products.
Double oil pump control multi-valve working principleThe pipeline installation of multiple emergency shut-off valves should be controlled by two hand oil pumps, one of which is working and the other is standby to prevent the valve from working properly when one oil pump is damaged. In the case of multiple emergency shut-off valves, one (J23H-40P) needle valve is used for control. So that the service can be closed using a needle valve.| Classes | 20K 1.0Mpa |
| Cylinder working pressure | ≤6.0.Mpa |
| The use of temperature | -40~+80ºC |
| The cylinder uses medium | Mix spindle oil and transformer oil |
| Use medium | Natural gas, liquefied gas, liquid ammonia, gas |
| Fuse closed time | + 70 ºC |
| Closing time | 10 seconds or less |
| Cylinder opening pressure | Acuity 2.0 MPa |
| 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 |
| 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 |
2. Before installation, clean the valve and tighten the joint of each thread.
3. The emergency cut-off valve adopts the principle of check valve, which can only be cut off. The valve mark must be paid attention to during installation, and the end to be protected is used as the valve entrance. Valve installation direction: high in low out.
4. Flange sealing surface form, pressure grade and connection standard must be indicated when ordering.QGY43F Hydraulic Vehicle Emergency Shut-Off Valve
In the important facilities of transportation and storage equipment such as liquefied gas tank car, train tank car, ball tank, storage tank, etc., the plug of the low melting point material valve is installed on the oil pressure pipeline or hand pull device of the valve. When loading and unloading liquefied gas, if there is an accident, The emergency cut-off device protects the safety of the equipment, the safety of the operator and the surrounding environment, preventing the occurrence of a major accident.
The performance specification| Specifications (DN) | Nominal pressure (Mpa) | Seal test pressure (Mpa) | Operating temperature (ºC) | Applicable medium | Control cylinder part |
| Disc opening height (mm) | Use medium | Disc opening pressure (Mpa) |
| 25 | 2.5 | 2.75 | - 40 ºC ~ + 50 ºC | Liquefied petroleum or liquid ammonia, etc | 12 | 2# spindle oil or 13# machine oil | 2.0-4.0Mpa |
| 50 | 2.5 | 2.75 | 18 |
Function principle and structure description:1. without external pressure valve operation case, the disc in a normally closed state, tank car, spherical tank, storage tank system when used by hand pump pressure, open the valve or a manual device, under the oil pressure or a manual device to use that valve is fully open, when you need to close the valve or when there is an emergency, can drain off or let go of the manual hydraulic system, the valve automatically shut down, Or because of the low melting point of the pipe plug in the temperature rise to achieve self-melting.
2. The connecting size of valve flange is in accordance with JB/T79.1-94 "Convex integral cast steel flange" size standard.Main external dimensions and connection dimensions (refer to composition)DN | SIZE |
D | D1 | D2 | D3 | D' | D1' | D2' | D3' | b | f | z-Фd | b' | f' | z'-Фd' | H |
25 | 160 | 125 | 102 | 88 | 115 | 85 | 68 | 58 | 22 | 3 | 4-18 | 16 | 2 | 4-14 | 250 |
50 | 195 | 160 | 135 | 121 | 160 | 125 | 102 | 88 | 26 | 3 | 8-18 | 24 | 3 | 4-18 | 338 |
| Part name | Material |
| The valve body | WCB/1Cr18Ni9Ti |
| Valve ring | F4 |
| The disc | 2Cr13/1Cr18Ni9Ti |
| Oil cylinder | 45#/1Cr18Ni9Ti |
| Spring spring | 1Cr18Ni9Ti /60Si12mn |
| Live plug | 2Cr13/1Cr18Ni9Ti |
Precautions for storage, installation and use:
1. Protective cover must be added at both ends of the valve access and stored in a dry and ventilated room. If stored for a long time, it should be checked regularly to prevent corrosion.
2. before the installation of the valve do not remove the dust cover, so that there is no dirt in the valve;
3. when installing, remove the dust cover, and blow the pipeline 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.
JUNKANG FLUID TECHONOLOGY CO., LTD
Professional Control Valve Manufacturer
Company Profile
Junkang 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 EquipmentTest Center
Certificate 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
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