Pressure/Vacuum Relief Valve
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Pressure & Vacuum Relief Valve(Breather Valve)
A breather valve refers to a type of valve that ensures that the storage tank space is isolated from the atmosphere within a certain pressure range, and can also communicate with the atmosphere when the pressure exceeds or falls below this range. Its function is to prevent the storage tank from being damaged due to overpressure or vacuum, while reducing the evaporation loss of the stored liquid. Setting up a breathing valve can reduce gas emissions out from the tank, thereby reducing pollution to the atmosphere, but also prevent damage to the storage tank caused by overpressure or instability caused by vacuum, which has a certain promoting effect on safety and environmental protection.
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Working Principle
The breathing valve mainly consists of a valve body,a valve seat, a valve cover, and two sets of opening and closing devices controlled by vacuum and pressure. The opening and closing device includes valve disc, guide rod, spring, spring seat, and sealing ring. When the pressure inside the tank reaches the rated positive pressure for exhalation, the pressure valve disc opens and the vapor inside the tank is discharged; When the vacuum degree inside the tank reaches the rated suction negative pressure, the vacuum valve disc opens and air enters.
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General Selection Principles
Furson's breathing valve has excellent performance, including the opening and closing pressure difference of the breathing valve, which meets and far exceeds the leakage rate control of API2000, and the full opening flow release after 10% overpressure. We have all passed the witness testing of SGS organization and obtained corresponding reports for these performance parameters.
Our 9620 P/V Valve ( with end-of-line deflagration flame arrester)has also obtained ATEX type test certification,currently widely used in storage tanks with low leakage requirements, this structural type of breathing valve has undergone type tests for fire resistance performance and also has good leakage rate control. Compared with previous structures, it is lighter in weight and easier to maintain and upkeep.
9100 Pressure & Vacuum, End of Line
The 9100 Pressure & Vacuum Valve is a highly efficient and reliable end-of-line valve designed to precisely control pressure and vacuum conditions in various systems.
Size: NPS2~12
Set Pressure : Weight loaded: 2mbar~69mbar；
Spring loaded: 69mbar~999mbar
Set Vacuum : Weight loaded: 2mbar~43mbar；
Spring loaded: 43mbar~48mbar
Materials: WCB, CF8, CF3M (Others on request)
Standards: API2000, ISO28300
9100Z P/V Valve with Flame Arres...
The 9100Z P/V Valve with Flame Arrester is a cutting-edge end-of-line solution designed to precisely manage pressure and vacuum conditions while providing reliable protection against flame propagation.
Size: NPS2~12
Set Pressure : Weight loaded: 2mbar~69mbar；
Spring loaded: 69mbar~999mbar
Set Vacuum : Weight loaded: 2mbar~43mbar；
Spring loaded: 43mbar~48mbar
PV valve materials: WCB, CF8, CF3M (Others on request)
Standards: API2000、ISO28300、ISO16852
Flame arrester type: 8830/8840 series
Flame arrester housing materials: Carbon steel, SS 304, SS 316L
Flame arrester elements materials: SS 304, SS 316L
9200 Pressure & Vacuum, In Line
The 9200 Pressure & Vacuum Valve represents a pinnacle of engineering excellence, serving as an advanced in-line valve meticulously designed to precisely manage pressure and vacuum conditions within a diverse range of industrial systems. This valve is not just a component but a crucial element that ensures the seamless and efficient operation of complex industrial processes.
The 9200 Pressure & Vacuum Valve is the result of extensive research and development, incorporating the latest technological advancements and industry insights. It is engineered to meet the ever-increasing demands for precise pressure and vacuum control in modern industrial applications, where even the slightest deviation can have significant implications on system performance and safety.
This valve plays a vital role in maintaining the stability and reliability of industrial systems, safeguarding against potential pressure and vacuum fluctuations that could lead to equipment damage, process inefficiencies, or safety hazards. It is a testament to the commitment to providing superior solutions that enhance the overall operational efficiency and integrity of industrial processes.
Size: NPS2~12
Set Pressure : Weight loaded: 2mbar~69mbar；
Spring loaded: 69mbar~999mbar
Set Vacuum : Weight loaded: 2mbar~43mbar；
Spring loaded: 43mbar~48mbar
Materials: WCB, CF8, CF3M(Others on request)
Standards: API2000, ISO28300
9200Z P/V Valve with Flame Arres...
The 9200Z P/V Valve with Flame Arrester is an advanced in-line solution engineered to precisely manage pressure and vacuum conditions while offering reliable flame protection.
Size: NPS2~12
Set Pressure : Weight loaded: 2mbar~69mbar；
Spring loaded: 69mbar~999mbar
Set Vacuum : Weight loaded: 2mbar~43mbar；
Spring loaded: 43mbar~48mbar
PV valve materials: WCB, CF8, CF3M (Others on request)
Standards: API2000、ISO28300、ISO16852
Flame arrester type: 8830/8840 series
Flame arrester housing materials: Carbon steel, SS 304, SS 316L
Flame arrester elements materials: SS 304, SS 316L
9300 Pressure-Only Relief Valve
The 9300 Pressure-Only Relief Valve is a highly specialized and meticulously engineered valve, specifically crafted to offer dependable overpressure protection across a diverse spectrum of industrial applications. This valve is not just a component but a critical safeguard that ensures the smooth and safe operation of industrial processes.
Designed with a focus on delivering unwavering reliability and performance, the 9300 Pressure-Only Relief Valve plays a vital role in preventing potential disasters caused by excessive pressure build-up. It acts as a sentinel, protecting valuable equipment and systems from the damaging effects of overpressure.
The 9300 valve is the result of extensive research and development, incorporating the latest technological advancements and industry best practices. It is a testament to the commitment to providing superior protection solutions that meet the stringent demands of modern industrial operations.
Size: NPS2~12
Weight loaded: 2mbar~69mbar
Spring loaded: 69mbar~999mbar
Materials: WCB, CF8, CF3M (Others on request)
Standards: API2000, ISO28300
9400 Vacuum-Only Relief Valve
The 9400 Vacuum-Only Relief Valve is a highly specialized and purposefully engineered valve, meticulously designed to provide dedicated protection to systems against the potentially damaging effects of vacuum conditions. It serves as a crucial safeguard, ensuring the stable and uninterrupted operation of various industrial processes.
This valve is not just an ordinary component but a strategic solution that plays a vital role in maintaining the reliability and functionality of systems that are prone to vacuum-related issues. It is engineered with a deep understanding of the complex dynamics of vacuum and the need for precise control to prevent any adverse impact on the equipment and processes it is protecting.
The 9400 Vacuum-Only Relief Valve is the result of extensive research, development, and engineering expertise. It represents a commitment to providing cutting-edge technology and superior protection in industries where vacuum control is of paramount importance.
Size: NPS2~12
Weight loaded: 2mbar~69mbar
Spring loaded: 69mbar~999mbar
Materials: WCB, CF8, CF3M (Others on request)
Standards: API2000, ISO28300
9500 Pilot Operated Pressure & V...
The 9500 Pilot Operated Pressure & Vacuum Relief Valve stands as a highly sophisticated and meticulously engineered valve solution, purposefully crafted to precisely manage the pressure and vacuum conditions within a wide array of diverse industrial systems. This valve is not merely a component but a strategic instrument that plays a pivotal role in maintaining the stability and safety of complex industrial operations.
Designed with a forward-thinking approach and cutting-edge technology, the 9500 valve is engineered to meet the exacting demands of modern industrial processes where precise control of pressure and vacuum is essential for optimal performance and protection.
The 9500 valve is the result of in-depth research and development, combining years of industry expertise with the latest advancements in valve engineering. It represents a commitment to providing top-notch solutions that address the evolving challenges faced by various industrial sectors.
Size: NPS2~12
Pilot Operated: 1mbar~100mbar
Materials: WCB, CF8, CF3M (Others on request)
Standards: API2000, ISO28300
9620 P/V Valve (end-of-line defl...
The 9620 P/V Valve is a cutting-edge and highly integrated solution meticulously crafted to expertly manage pressure and vacuum conditions. Simultaneously, it offers exceptional protection against deflagration flames at the end of the line, ensuring the safety and integrity of your systems.
This valve is not just a simple component but a sophisticated engineering marvel that combines multiple functionalities into one seamless unit. It is designed to handle the complex and dynamic pressure and vacuum fluctuations that occur in various industrial processes, providing a reliable and consistent performance.
The 9620 P/V Valve is the result of extensive research and development, taking into account the latest industry standards and customer requirements. It is engineered to be at the forefront of pressure and vacuum management technology, delivering superior performance and protection.
Size: NPS2~12
Set Pressure: Weight loaded: 2mbar~69mbar；
Set Vacuum: Weight loaded: 2mbar~43mbar；
Materials: WCB, CF8, CF3M (Others on request)
Standards: API2000、ISO28300、ISO16852
Flame arrester elements materials: SS 304, SS 316L
9700 P/V Valve with Flame Arrest...
The 9700 P/V Valve with Flame Arrester Elements is a specialized end-of-line device designed to precisely control pressure and vacuum while providing effective flame protection.
Size: NPS2~12
Set Pressure : Weight loaded: 2mbar~69mbar；
Spring loaded: 69mbar~999mbar
Set Vacuum : Weight loaded: 2mbar~43mbar；
Spring loaded: 43mbar~48mbar
Materials: WCB, CF8, CF3M (Others on request)
Standards: API2000, ISO28300, ISO16852
Flame arrester elements materials: SS 304, SS 316L
The flame arrester elements are installed at the inlet and outlet of the P/V valve