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With double nozzle breathing valve

With double nozzle breathing valve
Stable quality: implement quality monitoring throughout the process, meticulous and comprehensive detection!

Reasonable price: efficient internal cost control, reducing expenses and benefiting customers!

Fast delivery: advanced production lines, sufficient stocking, shortening the delivery time!
Sales: 021-31007323
Fax: 021-333321522
Technology: 021-31007323

product manual Pledge Order process


  Product name : With double nozzle breathing valve Product model : HXF-2
   Driving method : Manual Connection form : Flange
   Product features : 泄漏量小 Compact structure with low leakage    Sealing material : Teflon
   Pressure range : AD level    Nominal diameter : 0-DN2 00 DN2 0-DN2 00
   Common materials : Carbon steel, stainless steel    Technical consultation : 021-31007323

是国内著名〖 带双接管呼吸阀 〗制造商,也是国内大型【 呼吸阀 】生产商之一,公司自成立以来始终围绕客户的需求并持续创新,为广大的代理商和企业客户提供〖带双接管呼吸阀 〗解决方案,质量可靠,价格实惠,故畅销全国各地,欢迎新老客户来电,来函,我们将为您提供最优质的服务。 Hushan Valve Manufacturing (Shanghai) Co., Ltd. is a well-known domestic manufacturer of [ with double nozzle breathing valve ] and one of the large domestic [ breathing valve ] manufacturers. Since its establishment, the company has always focused on customer needs and continued innovation for the majority of Agents and corporate customers provide the "with double nozzle breathing valve" solution, which is reliable in quality and affordable in price, so it sells all over the country. Welcome new and old customers to call us and email us. We will provide you with the best service.

First, the main uses and characteristics of double-pipe breathing valve

阻火器 是储罐不可缺少的安全设施. According to the national standard "Code for Design of Fire Protection for Petrochemical Enterprises" (GB50160-90), "Fixed top tanks for Class A and B liquids, flame arresters and breathing valves are used ." Visible breathing valves and flame arresters are indispensable for storage tanks. Safety Facilities.

It can not only maintain the pressure balance of the storage tank, ensure that the rabbit is damaged when the storage tank is overpressured or vacuum, and can reduce the volatilization and loss of the medium in the tank. The breathing valve is a safe and energy-saving product that maintains the pressure balance of the tank and reduces the volatilization of the medium. Often used with fire arresters. The valve is mainly used to recover toxic and harmful gases that pollute the environment and endanger human safety.

带双接管呼吸阀 ,具有结构紧凑,通气量大,泄漏量小,耐腐蚀,密封性能好等特点.最近又开发了具有国际先进水准的防爆阻火器呼吸阀(HXF-IZ型),阻火器位于呼吸阀吸入口处,彻底杜绝火源进入呼吸阀壳体内.具有体积小,重量轻,检修,清洗,更换方便等优点等特点。 The breathing valve with double nozzles produced by our company has the characteristics of compact structure, large ventilation, small leakage, corrosion resistance, good sealing performance, etc. Recently, it has developed an internationally advanced explosion-proof flame arrester breathing valve (HXF-IZ type) ), The flame arrester is located at the inlet of the breathing valve, completely preventing the fire source from entering the breathing valve housing. It has the advantages of small size, light weight, maintenance, cleaning, easy replacement and other advantages.

The valve disc is made of polytetrafluoroethylene, which has the advantages of low temperature resistance and antifreeze. The valve is equipped with an electrostatic output device to keep the valve at the same potential as the tank at all times.

防火呼吸阀 正常工作情况下,阻火呼吸人孔基本保持密封状态,储罐处于正常压力。 Under the normal working condition of the fire breathing valve , the fire blocking breathing manhole is basically kept sealed, and the storage tank is under normal pressure. 呼吸阀 正常工作满足不了因意外原因造成储罐急剧超压时,呼吸人孔的泄压盖自动顶开,进行紧急泄压,使罐内压力保持正常;当罐内压力急剧减压或超真空时,吸入阀便开启急剧吸入大气,维护罐内正常压力;当吸入大气带有火花、火焰时,阻火层起到“器壁效应”的作用来阻止火焰的通过,以保护储罐的安全。 When the normal operation of the breathing valve can not meet the sudden overpressure of the storage tank due to unexpected reasons, the pressure relief cap of the breathing manhole will automatically open and perform emergency pressure relief to keep the pressure in the tank normal; When vacuum is applied, the suction valve is opened to inhale the atmosphere sharply to maintain the normal pressure in the tank; when the atmosphere is sparked or flamed, the fire barrier acts as a "wall effect" to prevent the flame from passing through to protect the tank Safety.

带双接管阻火呼吸阀的适用范围 Application range of fire resistance breathing valve with double connection

Fire resistance breathing valve with double connection is suitable for oil products with storage point below 28C and oil products with flash point below 100C, such as gasoline, kerosene, light diesel oil, thick oil, and other chemical products with the same properties Storage tank.

参数明细 Third, the parameter details of the breathing valve with double nozzle

Operating pressure
Operating pressure
+ 980Pa
+ 100mmH2O

A: -295Pa (-30mmH2O) + 355Pa (+ 36mmH2O)

B: -295Pa (-30mmH2O) + 980Pa (+ 100mmH2O)

C: -295Pa (-30mmH2O) + 1750Pa (+ 180mmH2O)

D: -295Pa (-30mmH2O) + 98000Pa (+ 10000mmH2O)

Explosion-proof level with double nozzle breathing valve: BS 5501: IIA, IIB, IIC.

Housing material: carbon steel, aluminum alloy, stainless steel: SUS304, SUS304L, SUS316, SUS316L, lining.

Valve disc and valve seat materials: aluminum alloy, stainless steel.

Seal material: PTFE.

Flange material: HG20592-97PN10.MPa, when customers need to use GB, SH, HGJ, JB, ANSI, JIS and other standards or change the pressure level, please specify in the order contract.

Manufacturing and testing standards: Manufacture and acceptance according to (Petroleum Storage Tank Breathing Valve) SY7511-87, (Petroleum Tank Flame Retardant Performance and Test Method GB5908-86, etc., or customer specified standards.)


















































带双接管阻火呼吸阀的维护与保养 Fourth, the maintenance and maintenance of double-pipe fire resistance breathing valve

In order to ensure that the performance of the fire resistance breathing valve with double nozzles reaches the purpose of safe use, the fire resistance breathing valve should be regularly inspected and maintained:

1. Check whether the pressure valve disc and vacuum valve disc are flexible, and whether the contact surfaces of the guide rod and the valve seal ring are damaged.

2. When reinstalling the pressure plate and vacuum plate, ensure that the contact surface is tight and the guide rod can be raised and lowered flexibly.

3. The anti-vibration of the disc must be cleared when the new breathing valve is activated.

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