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All-weather fire resistance breathing valve


All-weather fire resistance 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 : All-weather fire resistance breathing valve Product model : QZF, GFQ
   Driving method : Manual Connection form : Flange
  Product features : Large ventilation, good sealing performance, small leakage, and corrosion resistance    Sealing material : Hard alloy, rubber
   Pressure range : AC level    Nominal diameter : DN50-DN800
   Common materials : Carbon steel, stainless steel    Technical consultation : 021-31007323

是国内著名〖 全天候阻火呼吸阀 〗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〖全天候阻火呼吸阀 〗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 all-weather fire-resistance breathing valves and one of the large domestic manufacturers of [ breathing valves ]. Since its establishment, the company has always focused on customer needs and continued innovation for the majority Agents and corporate customers provide the "All-weather Fire Breathing Valve" solution, which is reliable in quality and affordable, so it sells all over the country. Welcome new and old customers to call us or write us a letter. We will provide you with the best service.

I. Introduction of all-weather fire resistance breathing valve

   主要是用来满足储罐大小呼吸的通气要求与 阻火器 配套安装在储存甲、乙、丙类液体的储罐顶上,确保储罐在超压时免遭破坏,同时减小储罐内介质的蒸发损耗。 The all-weather fire-resistance breathing valve is mainly used to meet the ventilation requirements of the tank for breathing. Evaporation loss of medium in small storage tanks. All-weather fire-resistance breathing valve is manufactured and accepted in accordance with GB5908-97 and SY7511-87 standards in the petroleum industry. The all-weather fire-resistance breathing valve has an electrostatic ground wire to keep the valve and the tank at the same potential. The valve is frost-resistant and suitable for use in cold areas. All-weather fire resistance breathing valve combines the functional characteristics of all-weather breathing valve and fire extinguisher, and effectively combines the two.


Second, the main characteristics of all-weather fire resistance breathing valve
The valve has the characteristics of large ventilation, good sealing performance, small leakage, and corrosion resistance.

Third, the main technical parameters of all-weather fire resistance breathing valve
 
Operating pressure: Class A positive pressure: 355Pa (36 mm water column);
Negative pressure: 295Pa (30mm water column)
Class B positive pressure: 980Pa (100mm water column);
Negative pressure: 295Pa (30mm water column)
Class C positive pressure: 1765Pa (180 mm water column);
Negative pressure: 295Pa (30mm water column)
When ordering, please specify the product name, model, specifications and pressure level.
 


Third, the main shape of all-weather fire resistance breathing valve and flange connection dimensions
 

Specification (DN)

Weight (Kg unit)

Installation size (mm)

D1

D

L

H

n Φ

50

6.5

Φ110

Φ140

160

255

4 14

80

9.8

Φ150

Φ185

213

260

4 18

100

12

Φ170

Φ205

265

290

4 18

150

twenty one

Φ225

Φ260

305

330

8 18

200

31

Φ280

Φ315

355

350

8 18

250

35

Φ335

Φ370

420

400

12 18

Note: The connecting flange meets the requirements of JB78-59 "cast iron flange"

全天候阻火呼吸阀 操作压力 Fourth, the operating pressure of all-weather fire-resistance breathing valve

A: + 355Pa (36mmH20); -295Pa (30mmH20)

B: + 980Pa (100mmH20); -295Pa (30mmH20)

C: +1765 Pa (180mmH20) -295Pa (30mmH20)

全天候阻火呼吸阀 维修与保养 V. Repair and maintenance of all-weather fire resistance breathing valve

In order to ensure the normal use of fire-blocking breathing valves

1. The corrugated fire barrier should be removed and cleaned regularly within 3-6 months to ensure that each hole in the fire barrier is unblocked to prevent blockage and ensure safe and normal use.

2. Regularly check whether the positive and negative valve discs are flexible, and the contact seal between the guide rod and the valve disc is damaged. If it is damaged, replace it immediately.

3. When inspecting, maintaining and reinstalling, it is necessary to ensure that the joint surfaces in the valve cooperate closely, and the valve disc is flexible to lift.

4. When the new valve is activated, the anti-vibration between the valve discs should be removed before installation, otherwise the breathing valve will fail.

全天候阻火呼吸阀机械呼吸阀的选用 Six, the selection of all-weather fire resistance breathing valve mechanical breathing valve

1. The type of mechanical breathing valve should meet the requirements of the installation environment. It includes installation location requirements and temperature range requirements, such as the use of all-weather breathing valves in cold areas.

2. The control pressure of the mechanical breathing valve should be compatible with the pressure capacity of the oil tank. For new tanks, mechanical breathing valves for vertical vaulted tanks are generally rated at 2kPa for pressure valves and -0.5kPa for vacuum valves.

3. The specifications of the mechanical breathing valve (flange diameter) should meet the maximum gas flow requirements of the oil tank for breathing gas.

全天候阻火呼吸阀 标志和包装 Seven, all-weather fire resistance breathing valve sign and packaging
 

1. Each breathing valve is fixed with a permanent product label at an obvious location. The label should meet the requirements of GB / T13306 and indicate:

a, product name b, product model c, operating temperature d, operating pressure

e, product weight f, factory number g, manufacturing time h, instruction manual

呼吸阀 非加工表面应涂防锈底漆,外表再涂两遍面漆。 2. The non-processed surface of the breathing valve should be coated with rust-proof primer, and the top coat should be applied twice. The paint should be uniform and bright in color. The flange surface should be coated with rust-proof grease and protected with a plastic cover. The whole is packed in a wooden box, and its packaging meets the standards of GB / T13384.

3. Breathing valves are stored in a warehouse with rainproof facilities. Do not invert them during storage and transportation.

4. Each fire-blocking breathing valve should be attached with the following documents when it leaves the factory:

a. Product manual b. Product pressure test report c. Product certificate

 

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