Model QHXF-2000 is designed to vent to atmosphere to protect your tank from damage created by over-pressure or excessive vacuum.Costly product evaporation losses due to normal tank "breathing" are greatly reduced.Because it retains toxic vapous,atmospheric contamination is minimized.This helps to provide increased fire protection and safety.
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)
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;
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