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

Breath Valve, Breathing Valve, Breather Valve manufacturer / supplier in China, offering Round-The-Clock Resistance Fire 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 Round-The-Clock Resistance Fire Breathing Valve

Round-The-Clock Resistance Fire 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
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Production Capacity: 2000PCS/Year
Transport Package: Standard Export Wooden Case
Payment Terms: L/C, T/T

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

Round-the-clock Resistance Fire 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.

Breathing valve is to maintain the tank pressure balance, reduce safety energy-saving products medium volatile, but also the use ofprinciples of vapor heat transfer, protect the respiratory valve parts is not easy to freeze, the breathing valve to ensure the normal work.

Breathing valve produced by our company has simplified structure, ventilation volume, less leakage, corrosion resistance, insulationetc.
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: 
gasoline, kerosene, diesel, aromatics, sulfur, air and other petrochemical materials;
Environment temperature:
-40 ºC -+60 ºC;
Shell material: 
HT, AL, A3, 18-8, 304, 304L, 316, 316L.
Flange standards: 
HG20592-97 PN1.0 (also can be produced according to user specified criteria)

Round-The-Clock Resistance Fire Breathing Valve
Round-The-Clock Resistance Fire Breathing Valve

Round-The-Clock Resistance Fire 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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