Gold Member Since 2011
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Zhejiang Naibang Valve Co., Ltd.

Breather Valve, Breathing Valve, Breath Valve manufacturer / supplier in China, offering All-Weather Fire Proof &Explosion-Proof Breathing Valve, Flanged Double Disc Swing Check Valve (H46), API 6D Cast Steel Butt Welded Trunnion Ball Valve and so on.

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Supplier Homepage Product Breathing Valve Series All-Weather Fire Proof &Explosion-Proof Breathing Valve

All-Weather Fire Proof &Explosion-Proof Breathing Valve

Purchase Qty.:
5-99 100+
FOB Unit Price: US $175 US $10
Purchase Qty. (Pieces) FOB Unit Price
5-99 US $175
100+ US $10
Get Latest Price
Port: Shanghai, China
Production Capacity: 2000PCS/Year
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: QZF-89
  • Class: 150lb to 2500lb
  • Application Fields: Metallurgy,Light Industrial,Electric Power,Petroch
  • Trademark: NIPO
  • Specification: API6D, ISO9001, CE, SGS, etc
  • HS Code: 8481804090
  • Size: Dn50 - Dn300
  • Certificates: API 6D, CE, ISO9001
  • Delivery Detail: 20~45 Days According to The Specific Quantities
  • Transport Package: Standard Export Wooden Case
  • Origin: Wenzhou, Zhejiang, China
Product Description

All-weather fire proof &explosion-proof breathing valve

Breathing valve is a kind of air breather which install on the petrochemical fixed storage tank, in order to avoid tank over the pressure or vacuum making the storage tank destruct, prevent the outside flame enter, reduce the tank fluid volatile.

 fire breathing valve is to maintain the tank pressure balance, reduce safety energy-saving products medium volatile, but also the use of principles of vapor heat transfer, protect the respiratory valve parts is not easy to freeze, the breathing valve to ensure the normal work, equipped with fire retardant explosion-proof function.

Fire breathing valve produced by our company has simplified structure, ventilation volume, less leakage, corrosion resistance, insulation, etc.

The valve adopts polytetrafluoroethylene material, has the advantages of low temperature resistant, anti frost. 

The electrostatic
protection device is provided with a respiratory valve, the valve and the tank to keep the same potential moment.


Operating pressure:

Type A: +355pa(+36mmH2O) -295pa(-30mmH2O)

Type A: +355pa (+36mmH2O) -295pa (-30mmH2O)

Type B: +980pa(+100mmH2O) -295pa(-30mmH2O)

Type B: +980pa (+100mmH2O) -295pa (-30mmH2O)

Type C: +1950pa(+200mmH2O) -295pa(-30mmH2O)

Type C: +1950pa (+200mmH2O) -295pa (-30mmH2O)

Type D:  according to user requirement (special pressure rating)

under normal circumstances
, (fire) breathing valve operating pressure to B shall prevail;


Applicable materials: 
, kerosene, diesel, aromatics, sulfur, air and other petrochemical materials;

Environment temperature:
 ºC -+60 ºC

Shell material: 
, AL, A3, 18-8, 304, 304L, 316, 316L.


Flange standards: 
 PN1.0 (also can be produced according to user specified criteria


All-Weather Fire Proof &Explosion-Proof Breathing Valve
All-Weather Fire Proof &Explosion-Proof Breathing Valve
All-Weather Fire Proof &Explosion-Proof Breathing Valve

We welcome all the world customers to contact us for more cooperation.

With our years of technical knowledge and experience,we assure you,

Naibang will be one of your best parters in China.

Any interest,please do not hesitate to contact us.


Applicable Standards 
DesignASME B16.34, API6D 
Fire safeAPI 607 
Anti staticAPI 608, API6D 
Face to faceASME B16.10, API6D
Welding endsASME B16.25
Inspection and testAPI 598, API 6D  
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