Product Category

Breather Valve With Flame Arrester-Zfq-1

Producdt Description

ZCPE-pilot operated breather valve with flame arrester is a bit different with breather valve ,first let the seat leakage closer to set point ,second full flow without overpresure ,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, insulationetc.. The valve adopts polytetrafluoroethylene material, has the advantages of low temperature resistant, anti frost. The electrostaticprotection 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 B:	+980pa(+100mmH2O)-295pa(-30mmH2O)
Type C:	+1950pa(+200mmH2O) -295pa(-30mmH2O)
Type D:	according to user requirement (special pressure rating)
Material：	WCB SS304 SS304L SS316 SS316L
Flange Standard：	HG/T20592-2009 ANSI B16.5 HG/T 20615-2009(Class series) HG/T20592-2009 (PN series) ANSI B16.5 AMSE B16.5

Note:

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 °C -+60 °C;

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)

BREATHER VALVE WITH FLAME ARRESTER-ZFQ-1

Main technology parameter

◆Apply to every kinds of petroleum、chemical、medical、energy resources、special fluid or gas etc medium.
◆Explosion-proof class：BS5501：IIA、IIB、IIC.
◆Body material：carbon steel、aluminum alloy、stainless steel：SUS304、SUS304L、SUS316、SUS316L.
◆Disc、seat material：aluminum alloy、stainless steel.
◆Sealing material：PTFE.
◆Connection type：flange and thread.
◆Flange standard：HG20592 If customer need standard GB、SH、HGJ、JB、ANSI、JIS etc or change pressure class，please remark on the order contract.
◆Manufacture 、inspection standard：according to (petroleum storage tank breathing valve) SY/T0511.1-2010、(petroleum storage tank flame retar- dant performance and test method). GB5908-86 standard implement manufature and inspection or customer required standard.

Maintenance and servicing

In order to make flame retardant breathing valve use safety, should dismount bellows flame retardant layer in 3-6 months regularly，cleaning，make sure that every hole in flame retardant layer are unobstructed，avoid block，make sure it use safety and normal.Regularly check the positive, negative valve plate movement is flexible, Check leading mark and disc seating facing damage or not，should change immediately if damage.When check maintenance and installation again,should insure each junction surface of the valve fit closely，disc rising flexibility.when new valve start operating, before the installation ，should remove the flange protection cap clean the quakeproof matters between disc，otherwise the breathing valve will malfunction.