| ： Product name : || Takeover check valve || ： Product model : || HF-6 HX-5, HF-6 |
| ： Driving method : || Manual || ： Connection form : || Flange |
| ： Applicable temperature : || -40 ~ + 60 degrees || ： Sealing material : || Teflon |
| ： Pressure range : || AD level || ： Nominal diameter : || 0-DN3 00 DN2 0-DN3 00 |
| ： Common materials : || Carbon steel, aluminum alloy, stainless steel || ： Technical consultation : || 021-31007323 |
是国内著名〖 接管单呼阀 〗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〖接管单呼阀 〗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 [ Single-call valve ] and one of the large domestic [ breathing valve ] manufacturers. Since its establishment, the company has always been focusing on customer needs and continuous innovation, and it is the agent Business and enterprise customers provide the "Take over single call valve" solution, which is reliable in quality and affordable, 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.
接管单呼阀 主要用途及特点 First, the main purpose and characteristics of take over single call valve
阻火器 和呼吸阀”。 According to the national standard "Code for Design of Fire Protection of Petrochemical Enterprises" (GB50160-90), "Fixed top tanks for Class A and B liquids shall be equipped with flame arresters and breathing valves."
It can be seen that breathing valves and flame arresters are indispensable safety facilities for storage tanks. It can not only maintain the air 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.
是维护储罐气压平衡，减少介质挥发的安全节能产品，常与阻火器配套使用。 The takeover single call valve is a safe and energy-saving product that maintains the pressure balance of the storage tank and reduces the volatilization of the medium. It is often used in conjunction with a flame arrester.
The breathing valve produced by our company has the characteristics of compact structure, large ventilation, small leakage, corrosion resistance and good sealing performance.
The valve disc is made of polytetrafluoroethylene, which has the advantages of low temperature resistance and antifreeze. 单呼阀 壳体内。 The fire arrester is located at the inlet of the single call valve, completely preventing the fire source from entering the single call valve housing. It has the advantages of small size, light weight, convenient maintenance, cleaning and replacement. The valve is equipped with an electrostatic output device to keep the valve at the same potential as the tank at all times.
Second, take over the main technical parameters of the single call valve
Housing material: carbon steel, aluminum alloy, stainless steel (SUS304, SUS304L, SUS316, SUS316L), fluorine-lined, plastic.
Internal core parts: valve disc, valve seat, valve stem, valve sleeve.
Internal core material: stainless steel or PTFE.
Material of sealing ring: PTFE.
Ambient temperature: -40 ~ + 60 degrees.
Type A: -295Pa (-30mmH20) + 355Pa (+ 36mmH20)
Type B: -295Pa (-30mmH20) + 980Pa (+ 100mm H20)
Type C: -295Pa (-30mmH20) + 1750Pa (+ 180mm H20)
Type D: -295Pa (-30mmH20) + 9800Pa (+ 1000mm H20) (Special pressure, user specified.)
Explosion-proof grade: BS 5501: IIA, IIB, IIC.
Flange standards: GB, HG, SH, HGJ, JB, ANSL, JIS and other standards. (User specified, please indicate the pressure level)
Manufacturing and testing standards: Manufacture and acceptance according to (petroleum storage tank breathing valve) SY7511-87, (petroleum tank flame arrester performance and test method) GB5908-86; or user-specified standards.
Third, take over the single call valve specifications
带接管阻火单呼阀 HXF-VIZ1 Single call valve with takeover HXF-VZ1 Single call valve with takeover HXF-VIZ1
Fourth, take over the single call valve maintenance methods
1. Storage: After the above products are delivered to the construction site, if they are not temporarily installed or later overhauled and overhauled in the factory, they should be stored in a warehouse with rainproof facilities; the respiratory series products must not be inverted during transportation.
a. For breathing valve series products, the staff should go to the top of the tank to check once a month, check the valve disc, valve seat, valve stem, valve sleeve and other parts for dust and dirt. If there are, they should be cleaned and dried; every six months, Wipe the valve sleeve and valve stem once with transformer oil.
b. The fire-blocking layer of the fire-blocking breathing valve should be checked once every six months. If there are stains or impurities blocking the fire-blocking layer, the fire-blocking layer should be removed, the stain should be removed with the corresponding solvent, and then the fire-blocking layer should be cleaned with water. Keep it dry, put it in a ventilator and dry it before putting it in the case.
c. The paint on the inner and outer surfaces of the breathing valve housing should be repainted once a year.