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We manufacture more than a thousand specifications of over ten series of products, including safety valves, power station valves, steam extraction check valves, gate valves, globe valves, check valves, hard-sealed ball valves, all-welded ball valves, ball valves, butterfly valves, and other models and specifications.
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Double spring safety valve
Double spring safety valve
This valve is suitable for equipment or pipelines with steam, water, and other media operating at temperatures ≤350℃, serving as a pressure relief device. The connection flange conforms to the JB/T 79 standard.
Spring-loaded safety valve
Spring-loaded safety valve
The A21H type is suitable for equipment or pipelines with media such as air, ammonia, and petroleum gas at operating temperatures ≤200℃.
The A21Y type is suitable for equipment or pipelines with corrosive gases or liquids at operating temperatures ≤200℃.
As a pressure relief device.
The A21Y type is suitable for equipment or pipelines with corrosive gases or liquids at operating temperatures ≤200℃.
As a pressure relief device.
Spring-loaded safety valve with lever handle
Spring-loaded safety valve with lever handle
The A27H type is suitable for equipment or pipelines with water, air, steam, etc., where the operating temperature is ≤200℃.
The A27Y is suitable for equipment or pipelines with corrosive media where the operating temperature is ≤200℃.
As an overpressure protection device.
The A27Y is suitable for equipment or pipelines with corrosive media where the operating temperature is ≤200℃.
As an overpressure protection device.
Spring-loaded full-opening safety valve with wrench
Spring-loaded full-opening safety valve with wrench
The A28H type is suitable for equipment or pipelines carrying water, air, steam, etc., with an operating temperature ≤200℃.
The A28Y is suitable for equipment or pipelines carrying corrosive media with an operating temperature ≤200℃, serving as a pressure relief device.
The A28Y is suitable for equipment or pipelines carrying corrosive media with an operating temperature ≤200℃, serving as a pressure relief device.
Spring-loaded safety valve
Spring-loaded safety valve
The A41H type is suitable for equipment or pipelines with media such as petroleum gas, air, and water where the operating temperature is ≤300℃.
The A41Y-P/R type is suitable for equipment or pipelines with corrosive media where the operating temperature is ≤200℃, serving as a pressure relief device.
Connecting flanges conform to JB/T79 standard.
The A41Y-P/R type is suitable for equipment or pipelines with corrosive media where the operating temperature is ≤200℃, serving as a pressure relief device.
Connecting flanges conform to JB/T79 standard.
Spring-loaded safety valve
Diaphragm balanced safety valve
Diaphragm balanced safety valve
This valve is suitable for equipment or pipelines with operating temperatures ≤200℃, unstable back pressure, or toxic and corrosive media, or occasions with high back pressure, acting as a pressure relief device.
Connecting flanges are in accordance with JB/T79 standard.
Connecting flanges are in accordance with JB/T79 standard.
Surge safety valve / main safety valve
Surge safety valve / main safety valve
Main safety valves and high-temperature, high-pressure safety valves are mainly used on power plant boilers, pressure vessels, and desuperheating and pressure-reducing devices to prevent pressure from exceeding the maximum allowable pressure and to ensure safe operation of the equipment. When the medium pressure rises to the set pressure, the impulse safety valve opens, and the medium enters the piston chamber of the main safety valve from the pulse pipe, pushing the piston down to automatically open the valve. When the impulse valve is closed, the valve disc automatically closes again.
Single lever safety valve
Single lever safety valve
Product Working Principle and Applications: A lever-type safety valve utilizes a counterweight and lever to balance the force acting on the valve disc. Based on the lever principle, it can use a relatively lighter counterweight to obtain a larger acting force through the lever's safety mechanism and adjust the opening pressure of the safety valve by moving the position of the counterweight (or changing the mass of the counterweight).
The GA42H single-lever safety valve is applicable to equipment and pipelines with air, steam, and other media operating at temperatures ≤450℃, serving as a pressure relief device. When the pressure inside the equipment and pipelines exceeds the allowable value, the valve automatically closes to ensure the safe operation of the equipment and pipelines.
Product Structural Characteristics:
1. The lever-type safety valve has a simple structure, making it easy and relatively accurate to adjust.
2. The added load does not increase significantly due to the rising of the valve disc, suitable for high-temperature situations.
3. The lever-type safety valve structure is relatively bulky, and the loading mechanism is prone to vibration, often causing leakage due to vibration; its reseating pressure is relatively low, and it is not easy to close and maintain tightness after opening.
The GA42H single-lever safety valve is applicable to equipment and pipelines with air, steam, and other media operating at temperatures ≤450℃, serving as a pressure relief device. When the pressure inside the equipment and pipelines exceeds the allowable value, the valve automatically closes to ensure the safe operation of the equipment and pipelines.
Product Structural Characteristics:
1. The lever-type safety valve has a simple structure, making it easy and relatively accurate to adjust.
2. The added load does not increase significantly due to the rising of the valve disc, suitable for high-temperature situations.
3. The lever-type safety valve structure is relatively bulky, and the loading mechanism is prone to vibration, often causing leakage due to vibration; its reseating pressure is relatively low, and it is not easy to close and maintain tightness after opening.
Double-lever safety valve
Double-lever safety valve
The GA44 double-lever safety valve is a lever-type safety valve mainly used on power plant boilers or steam pressure pipelines as a pressure relief device for high-temperature media such as steam and air.
Single lever safety valve
Single lever safety valve
The GA51H safety valve is suitable for boilers and pressure vessels with temperatures ≤ 425℃, preventing pressure from exceeding the maximum allowable value and serving as an overpressure protection device for the equipment. The medium can be steam or air.
Static safety valve
Static safety valve
This type of valve is suitable for overpressure protection systems in Class E boilers and low-pressure vessels.
Pound-class spring-loaded closed safety valve
Pound-class spring-loaded closed safety valve
Safety valves are used on pressure vessels such as boilers and pressure containers as overpressure protection devices. When the pressure of the medium inside the protected equipment rises abnormally and exceeds the specified value, the valve automatically opens and then fully opens to prevent the pressure from continuing to rise; when the pressure drops to the specified value, the valve automatically closes to ensure the normal operation of the equipment. With the arrival of the replacement cycle for imported equipment safety valves in China and China's accession to the WTO, based on ISO4126 "General Requirements for Safety Valves", API526 "Steel Flanged Safety Relief Valves", ASME/ANSIB16.5a "Pipe Flanges and Flanged Fittings", and other standards, and drawing on the experience of domestic and foreign manufacturers of similar products, this factory has compiled this catalog based on the data from the past 10 years of production of American standard safety valves for users and agents to refer to when selecting products.
Pound-class spring-loaded safety valve
Pound-class spring-loaded safety valve
Safety valves are used on pressure vessels such as boilers and pressure containers as overpressure protection devices. When the pressure of the medium inside the protected equipment rises abnormally and exceeds the specified value, the valve automatically opens and then fully opens to prevent the pressure from continuing to rise; when the pressure drops to the specified value, the valve automatically closes to ensure the normal operation of the equipment. With the arrival of the replacement cycle for imported equipment safety valves in China and China's accession to the WTO, based on ISO4126 "General Requirements for Safety Valves", API526 "Steel Flanged Safety Relief Valves", ASME/ANSIB16.5a "Pipe Flanges and Flanged Fittings", and other standards, and drawing on the experience of domestic and foreign manufacturers of similar products, this factory has compiled this catalog based on the data from the past 10 years of production of American standard safety valves for users and agents to refer to when selecting products.
Spring-loaded safety valve
Spring-loaded safety valve
The A42Y-C type is suitable for equipment or pipelines with air, petroleum gas, and other media where the operating temperature is ≤300℃.
The A42Y-P/R type is suitable for equipment or pipelines with corrosive gaseous media where the operating temperature is ≤200℃, serving as a pressure relief device.
Connecting flanges conform to JB/T 79 standard.
The A42Y-P/R type is suitable for equipment or pipelines with corrosive gaseous media where the operating temperature is ≤200℃, serving as a pressure relief device.
Connecting flanges conform to JB/T 79 standard.
Full-opening safety valve with radiator
Full-opening safety valve with radiator
The A40Y safety valve with radiator is suitable for equipment and pipelines with air, petroleum gas, and other media operating at temperatures ≤ 400℃, acting as an overpressure protection device. When the pressure inside the equipment and pipelines exceeds the allowable value, the valve automatically opens and fully discharges; when the pressure drops to the specified value, the valve automatically closes to ensure safe operation of the equipment.
Connecting flanges conform to JB/T 79 standard.
Connecting flanges conform to JB/T 79 standard.