什么是呼吸阀?

A breather valve(pressure/vacuum relief valve) is designed to protect storage tanks, process systems, and equipment from excessive pressure and vacuum conditions. These valves allow for the controlled venting of gases or vapors and help to maintain a safe working environment by preventing tank damage and minimizing product loss due to evaporation​​​​.

通气阀如何工作?

Breather valves work by using weight-loaded or spring-loaded pallets to control the flow through the valve. When the internal pressure or vacuum reaches a set point, the pallet lifts off the seat to allow flow. This prevents emission losses until very close to the set pressure and prevents air intake until very close to the set vacuum​​.

使用呼吸阀有什么好处?

  1. High flow capacity from a compact valve size.
  2. Wide range of pressure and vacuum settings for maximum tank protection.
  3. Minimization of gas loss and evaporation, resulting in economic savings.
  4. Compliance with stringent emission control regulations.
  5. Modular design allows for customization to specific requirements​​​​.

呼吸阀由哪些材料制成?

Breather valves can be constructed from various materials, including aluminum, stainless steel, carbon steel, ductile iron, and alloys such as C276. The choice of material depends on the specific application and the type of media being handled​​​.

通气阀的常见应用有哪些?

Common applications include protecting storage tanks in industries such as pharmaceuticals, food and beverage, chemical processing, and petrochemical industries. They are also used in systems where vapors need to be piped away or vented to the atmosphere​​​.

呼吸阀符合哪些标准?

Breather valves are designed and tested according to standards such as API 2000:2014 and EN ISO 28300:2016. They also meet European Directive 2014/34/EU for equipment used in potentially explosive atmospheres (ATEX)​​​​.

如何为我的应用选择合适的呼吸阀?

Selecting the right breather valve involves considering factors such as tank size, media characteristics (flash point, boiling point, latent heat of vaporization, molecular mass), location, maximum filling and emptying rates, and the required set pressure and vacuum settings. Consulting with a Yee Valve expert and using a valve sizing service can help ensure optimal performance and cost-effectiveness​​​​.

呼吸阀需要哪些维护?

Regular inspection and maintenance are necessary to ensure breather valves operate correctly. This includes checking for any blockages, ensuring the pallets and seats are clean and free of debris, and verifying that the set pressures and vacuums are accurate. Maintenance procedures should follow the manufacturer’s recommendations to maintain safety and efficiency​​​​.

什么是阻火器?

A flame arrester is a safety device installed in equipment that contains flammable gases or vapors. It prevents the propagation of flames and explosions by quenching the flame front before it can reach the protected side of the device.

阻火器如何工作?

Flame arresters function by cooling the flame front through a series of narrow passages or “quenching gaps.” These gaps are designed to be small enough to extinguish the flame while allowing gases to pass through.

阻火器有哪些不同类型?

  • Deflagration Flame Arresters: Protect against explosions where the flame propagates at subsonic velocities.
  • 防爆阻火器: Designed for more severe conditions where the flame front travels at supersonic speeds, producing shock waves.
  • End-of-Line Flame Arresters: Installed at the end of a pipeline to protect against external sources of ignition.
  • In-Line Flame Arresters: Installed within the pipeline to prevent the spread of flames within the piping system.

阻火器通常用在哪里?

Flame arresters are commonly used in systems for generating, storing, and transporting flammable gases and liquids, such as chemical processing plants, oil refineries, gas storage facilities, and pipelines.

阻火器需要哪些维护?

Regular inspection and maintenance are essential for flame arresters to function correctly. Key maintenance tasks include:

  • Initial inspection three months after commissioning.
  • Annual inspections as a minimum for clean processes.
  • Additional inspections if an explosion is detected or if there are signs of damage or corrosion.
  • Cleaning to remove debris, insects, or corrosion that can block the quenching elements​​​​.

阻火器维护时应检查哪些内容?

  • Ensure the flame arrester is correctly installed according to the operating conditions.
  • Verify that no unauthorized modifications have been made.
  • Check for blockages, corrosion, and mechanical damage.
  • Confirm that all fasteners are secure and tightened to the required torque.
  • Record all maintenance activities accurately.

维护不当会产生什么后果?

Poorly maintained flame arresters can fail to provide adequate protection against explosions, potentially leading to catastrophic equipment damage and safety hazards. Common issues include blocked elements, severe corrosion, and mechanical damage, which can impair the flame arrester’s effectiveness​​​​​​.

阻火器可以用于任何类型的管道系统吗?

Flame arresters must be used under the specific conditions they were designed and tested for. They are available in various configurations to suit different piping systems, and the correct model should be selected based on the type of gas, operating pressure, and temperature range​​​.

安装阻火器时的主要考虑因素是什么?

  • Ensure compatibility with the process conditions, including gas type and pressure.
  • Follow torque guidelines for flanged connections.
  • Position the flame arrester correctly to facilitate future maintenance.
  • Check for leaks after installation to ensure a proper seal.

处理阻火器是否有任何具体警告?

  • Do not use lifting eyebolts to lift the entire flame arrester assembly; they are only for handling the housing during inspection and maintenance.
  • Avoid piping drainage, instrumentation, and cleanout connections to a common line to prevent flame bypass.
  • Replace damaged flame elements immediately as they can render the flame arrester ineffective​​​​.

你们的付款条件是什么?

  • 预付 30%,T.T. 发货前支付 70%(标准产品)
  • 通过 T.T. 预付 100%(特殊产品)
  • 100% L/C at sight from special customers and L/C should be issued from the world’s first-class bank. (Special Markets)

您是工厂还是贸易公司?

在Yee Valve,我们是一家专业集工业阀门制造和贸易于一体的家族企业。我们的战略总部位于台湾台北,并在中国大陆拥有三个最先进的工厂。

history of valve company

你们的产品保修期是多长?

All valves from Yee Valve are covered with a 12 months warranty from the date of installation or 18 months warranty from the shipment date, whichever comes earlier. The scope of the warranty is covered for manufacturing defects only. If a valve failure is due to incorrect operation by the customer, the warranty is not applicable.

如何保护我们的权利?

所有发货产品都有记录,我们为许多品牌提供 OEM 服务,但没有任何有关我们商品制造商的信息。任何图纸、操作说明、测试报告等均属于品牌所有者。

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