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Liquid ammonia emergency shut-off valve QDQ421F
Liquid ammonia emergency shut-off valve QDQ421F valve brand: Shanghai Shuangheng valve model: QDQ421F valve size: DN15-DN300 medium temperature: -40~+
Product details
Stainless steel pneumatic emergency shut-off valve - liquid ammonia emergency shut-off valve, hydraulic emergency shut-off valve, pneumatic emergency shut-off valve, gas emergency shut-off valve
Stainless steel pneumatic emergency shut-off valve product overview:
Product Name:Emergency shut-off valve for liquid ammonia
Product model: QDQ421F-16/25/40p
Product specifications: DN15-DN300
Pressure rating: 1.6Mpa-2.5Mpa-4.0Mpa
Applicable media: liquid ammonia, ammonia, natural gas, liquefied gas
Operating temperature:- 40~+80℃
Valve body material: stainless steel 304, 316, 304L, 316L, cast steel
Product Introduction of Stainless Steel Liquid Ammonia Emergency Cut off Valve;
Stainless steel liquid ammonia emergency shut-off valveIt is a safety protection valve installed on liquid ammonia, ammonia, liquefied petroleum gas (gas), liquid and gas pipelines, used in conjunction with remote gas sources. The valve is controlled to open and close by the gas source, so that in the event of a large amount of leakage or even fire on the pipeline or storage tank, the gas source can be quickly manually depressurized, or when the high temperature is ≥ 75 ℃, the melting alloy will melt, and the cylinder will automatically depressurize. The valve will quickly close to prevent leakage, providing safety protection. Widely used in chemical hazardous material pipelines, gas supply pipeline systems, gas thermal energy factory workshops, gas boiler rooms, and residential safety facilities.
Stainless steel pneumatic emergency shut-off valve product features:
Stainless steel liquid ammonia emergency shut-off valveCombining the advantages of globe valves, check valves, solenoid valves, and pneumatic valves, it has excellent technical performance, low load loss, and high reliability. It is used to output a signal to the solenoid valve through a leakage alarm in case of emergency. The solenoid valve is powered on to shut off the gas source, and the valve automatically closes. It can also quickly control the opening and closing of valves on pipelines or storage tanks from a distance, ensuring personal and property safety.
Stainless steel liquid ammonia emergency shut-off valveA valve belonging to the actuator in automation systems, consisting of a spring pneumatic diaphragm actuator or a floating piston actuator and a regulating valve, which receives signals from the regulating instrument and controls the cutting, connection or switching of fluids in the process pipeline. It has the characteristics of simple structure, sensitive response, and reliable action. It can be widely applied in industrial production sectors such as petroleum, chemical, and metallurgical industries. The air source for the stainless steel pneumatic emergency shut-off valve requires filtered compressed air, and the medium flowing through the valve body should be a gas free of impurities and particles.
Stainless steel liquid ammonia emergency shut-off valveProduct Technical Parameters:
Cylinder working pressure: ≤ 2.0Mpa
Cylinder medium: nitrogen, anhydrous air
Cylinder opening pressure: ≥ 0.4-0.7Mpa
Cylinder operating temperature: ≤ 75℃
Melting temperature of (fusible alloy): 75 ± 5 ℃
Cut off time: Valve diameter less than or equal to DN65, closing time ≤ 5 seconds
Valve diameter greater than DN65, closing time ≤ 10 seconds
Cylinder and piston: carbon steel
Spring material: 50CrVA (spring steel)
Sealing ring, O-ring: polytetrafluoroethylene, nitrile rubber
Opening type: normally open, normally closed
Stainless steel liquid ammonia emergency shut-off valveWorking principle:
Install a two position three-way solenoid valve at the inlet of the emergency shut-off valve air source, and control the valve switch using a remote electrical control console.
1. The valve is in a normally open state during daily operation, and the solenoid valve coil is in a power-off state, without consuming electrical energy. In case of emergency, the gas leak alarm will output an alarm signal to the solenoid valve, which will be powered on to exhaust and automatically close
2. Manually control the solenoid valve (press the red clip) to exhaust, and the valve will automatically close
3. When the staff have dealt with the accident and manually reopened the valve, the gas supply will be restored
4. Electrical protection level: CEI IP65/IP67
5. Explosion proof grade: Eexm Ⅱ T4/Eexm Ⅱ T5
6. Working voltage and power: AC 24V or 220V, 50Hz/14V; DC AC12V/8.5W, AC24V/8.5W
7. Working environment temperature:- 15～60℃
Precautions for storage, installation, and use of emergency shut-off valves:
1. When storing, seal all external passages of this valve with plugs or cover plates, and store it in a dry and ventilated room. For long-term storage, regular inspections should be conducted to eliminate dirt, and anti rust oil should be applied to the processing surface to prevent rusting
2. Valves can be installed on horizontal or vertical pipelines for use. Before installation, remove the dust cover and clean the inside of the valve to prevent dirt from entering the valve body and damaging the sealing ring
3. The emergency shut-off valve adopts the principle of check valve, which can only cut off in one direction. The flow direction of the working medium of the valve is high in and low out. When installing, attention must be paid to the valve markings, and the end to be protected should be used as the valve inlet
4. After the valve is opened for 12-14 hours every day, the valve disc should be promptly closed when the system is not working to avoid long-term compression of the spring and reduce the reliability of long-term use of the valve
5. When ordering products, the flange sealing surface form, pressure rating, and connection standard must be specified
The above is the product information of stainless steel pneumatic liquid ammonia emergency shut-off valve. If you have any questions about the specifications, models, pictures, and technical parameters of stainless steel pneumatic liquid ammonia emergency shut-off valve, please contact us for detailed information about stainless steel pneumatic liquid ammonia emergency shut-off valve!
Stainless steel pneumatic emergency shut-off valve product overview:
Product Name:Emergency shut-off valve for liquid ammonia
Product model: QDQ421F-16/25/40p
Product specifications: DN15-DN300
Pressure rating: 1.6Mpa-2.5Mpa-4.0Mpa
Applicable media: liquid ammonia, ammonia, natural gas, liquefied gas
Operating temperature:- 40~+80℃
Valve body material: stainless steel 304, 316, 304L, 316L, cast steel
Product Introduction of Stainless Steel Liquid Ammonia Emergency Cut off Valve;
Stainless steel liquid ammonia emergency shut-off valveIt is a safety protection valve installed on liquid ammonia, ammonia, liquefied petroleum gas (gas), liquid and gas pipelines, used in conjunction with remote gas sources. The valve is controlled to open and close by the gas source, so that in the event of a large amount of leakage or even fire on the pipeline or storage tank, the gas source can be quickly manually depressurized, or when the high temperature is ≥ 75 ℃, the melting alloy will melt, and the cylinder will automatically depressurize. The valve will quickly close to prevent leakage, providing safety protection. Widely used in chemical hazardous material pipelines, gas supply pipeline systems, gas thermal energy factory workshops, gas boiler rooms, and residential safety facilities.
Stainless steel pneumatic emergency shut-off valve product features:
Stainless steel liquid ammonia emergency shut-off valveCombining the advantages of globe valves, check valves, solenoid valves, and pneumatic valves, it has excellent technical performance, low load loss, and high reliability. It is used to output a signal to the solenoid valve through a leakage alarm in case of emergency. The solenoid valve is powered on to shut off the gas source, and the valve automatically closes. It can also quickly control the opening and closing of valves on pipelines or storage tanks from a distance, ensuring personal and property safety.
Stainless steel liquid ammonia emergency shut-off valveA valve belonging to the actuator in automation systems, consisting of a spring pneumatic diaphragm actuator or a floating piston actuator and a regulating valve, which receives signals from the regulating instrument and controls the cutting, connection or switching of fluids in the process pipeline. It has the characteristics of simple structure, sensitive response, and reliable action. It can be widely applied in industrial production sectors such as petroleum, chemical, and metallurgical industries. The air source for the stainless steel pneumatic emergency shut-off valve requires filtered compressed air, and the medium flowing through the valve body should be a gas free of impurities and particles.
Stainless steel liquid ammonia emergency shut-off valveProduct Technical Parameters:
Cylinder working pressure: ≤ 2.0Mpa
Cylinder medium: nitrogen, anhydrous air
Cylinder opening pressure: ≥ 0.4-0.7Mpa
Cylinder operating temperature: ≤ 75℃
Melting temperature of (fusible alloy): 75 ± 5 ℃
Cut off time: Valve diameter less than or equal to DN65, closing time ≤ 5 seconds
Valve diameter greater than DN65, closing time ≤ 10 seconds
Cylinder and piston: carbon steel
Spring material: 50CrVA (spring steel)
Sealing ring, O-ring: polytetrafluoroethylene, nitrile rubber
Opening type: normally open, normally closed
Stainless steel liquid ammonia emergency shut-off valveWorking principle:
Install a two position three-way solenoid valve at the inlet of the emergency shut-off valve air source, and control the valve switch using a remote electrical control console.
1. The valve is in a normally open state during daily operation, and the solenoid valve coil is in a power-off state, without consuming electrical energy. In case of emergency, the gas leak alarm will output an alarm signal to the solenoid valve, which will be powered on to exhaust and automatically close
2. Manually control the solenoid valve (press the red clip) to exhaust, and the valve will automatically close
3. When the staff have dealt with the accident and manually reopened the valve, the gas supply will be restored
4. Electrical protection level: CEI IP65/IP67
5. Explosion proof grade: Eexm Ⅱ T4/Eexm Ⅱ T5
6. Working voltage and power: AC 24V or 220V, 50Hz/14V; DC AC12V/8.5W, AC24V/8.5W
7. Working environment temperature:- 15～60℃
Precautions for storage, installation, and use of emergency shut-off valves:
1. When storing, seal all external passages of this valve with plugs or cover plates, and store it in a dry and ventilated room. For long-term storage, regular inspections should be conducted to eliminate dirt, and anti rust oil should be applied to the processing surface to prevent rusting
2. Valves can be installed on horizontal or vertical pipelines for use. Before installation, remove the dust cover and clean the inside of the valve to prevent dirt from entering the valve body and damaging the sealing ring
3. The emergency shut-off valve adopts the principle of check valve, which can only cut off in one direction. The flow direction of the working medium of the valve is high in and low out. When installing, attention must be paid to the valve markings, and the end to be protected should be used as the valve inlet
4. After the valve is opened for 12-14 hours every day, the valve disc should be promptly closed when the system is not working to avoid long-term compression of the spring and reduce the reliability of long-term use of the valve
5. When ordering products, the flange sealing surface form, pressure rating, and connection standard must be specified
The above is the product information of stainless steel pneumatic liquid ammonia emergency shut-off valve. If you have any questions about the specifications, models, pictures, and technical parameters of stainless steel pneumatic liquid ammonia emergency shut-off valve, please contact us for detailed information about stainless steel pneumatic liquid ammonia emergency shut-off valve!
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